AlllOt. fl51M5S S PUBUCATIONS

COMMERCE

PUBLICATION

NBS SPECIAL PUBLICATION 260

1973 Catalog

U.S.

DEPARTMENT

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no. 260

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NATIONAL BUREAU OF STANDARDS

The National Bureau of Standards1 was established by an act of Congress March 3, 1901. The Bureau's overall goal is to strengthen and advance the Nation's science and

technology and facilitate their effective application for public benefit. To this end, the Bureau conducts research and provides: (1) a basis for the Nation's physical measure- ment system, (2) scientific and technological services for industry and government, (3) a technical basis for equity in trade, and (4) technical services to promote public safety. The Bureau consists of the Institute for Basic Standards, the Institute for Materials Research, the Institute for Applied Technology, the Center for Computer Sciences and

Technology, and the Office for Information Programs.

THE INSTITUTE FOR BASIC STANDARDS provides the central basis within the United States of a complete and consistent system of physical measurement; coordinates

that system with measurement systems of other nations; and furnishes essential services leading to accurate and uniform physical measurements throughout the Nation's scientific community, industry, and commerce. The Institute consists of a Center for Radiation Research, an Office of Measurement Services and the following divisions: Applied Mathematics — Electricity — Mechanics — Heat — Optical Physics —

Linac Radiation 2 — Nuclear Radiation 2 — Applied Radiation 2 — Quantum

Electronics — Electromagnetics :i — Time and Frequency 3 — Laboratory

Astrophysics •"• — Cryogenics 3

. THE INSTITUTE FOR MATERIALS RESEARCH conducts materials research lead- ing to improved methods of measurement, standards, and data on the properties of

well-characterized materials needed by industry, commerce, educational institutions, and

Government; provides advisory and research services to other Government agencies;

and develops, produces, and distributes standard reference materials. The Institute consists of the Office of Standard Reference Materials and the following divisions: Analytical Chemistry—Polymers—Metallurgy—Inorganic Materials—Reactor

Radiation—Physical Chemistry.

THE INSTITUTE FOR APPLIED TECHNOLOGY provides technical services to pro- mote the use of available technology and to facilitate technological innovation in industry and Government; cooperates with public and private organizations leading to the development of technological standards (including mandatory safety standards), codes and methods of test; and provides technical advice and services to Government agencies

upon request. The Institute also monitors NBS engineering standards activities and

provides liaison between NBS and national and international engineering standards

bodies. The Institute consists of a Center for Building Technology and the following

divisions and offices: Engineering and Product Standards—Weights and Measures—Invention and

Innovation—Product Evaluation Technology—Electronic Technology—Technical Analysis—Measurement Engineering—Building Standards and Code Services4—Housing Technology'—Federal Building Technology4—Structures, Materials and Life Safety4—Building Environment4—Technical Evaluation and

Application4—Fire Technology.

THE INSTITUTE FOR COMPUTER SCIENCES AND TECHNOLOGY conducts re- search and provides technical services designed to aid Government agencies in improving cost effectiveness in the conduct of their programs through the selection, acquisition,

and effective utilization of automatic data processing equipment; and serves as the principal focus within the executive branch for the development of Federal standards for automatic data processing equipment, techniques, and computer languages. The Center

consists of the following offices and divisions: Information Processing Standards—Computer Information—Computer Services —Systems Development—Information Processing Technology.

THE OFFICE FOR INFORMATION PROGRAMS promotes optimum dissemination and accessibility of scientific information generated within NBS and other agencies of

the Federal Government; promotes the development of the National Standard Reference Data System and a system of information analysis centers dealing with the broader

aspects of the National Measurement System; provides appropriate services to ensure

that the NBS staff has optimum accessibility to the scientific information of the world,

and directs the public information activities of the Bureau. The Office consists of the following organizational units: Office of Standard Reference Data—Office of Technical Information and

Publications—Library—Office of International Relations.

1 Headquarters and Laboratories at Gaithersburg, Maryland, unless otherwise noted ; mailing address Washington, D.C. 20234.

2 Part of the Center for Radiation Research.

3 Located at Boulder, Colorado 80302.

4 Part of the Center for Building Technology.
§?AT!OKftL Bl'SE^'J OF STTM?*TM*

ls'< Standard Reference Materials

1973 catalog

Office of Standard Reference Materials

Institute for Materials Research

Lf-J- National Bureau of Standards "' Washington, D.C. 20234

CAUTION: The values given in the following sections are listed primarily

as a guide to purchaser. The values shown are nominal and may differ from

those shown on the certificates. Space limitations have required that some

values be omitted. For these reasons, the certificates issued with the stand- ards should always be consulted to obtain the certified values.

of c

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U.S. DEPARTMENT OF COMMERCE, Frederick B. Dent, Secretary

NATIONAL BUREAU OF STANDARDS, Richard W. Roberts, Director

Issued April 1 973
Library of Congress Catalog Card Number: 72-600291

National Bureau of Standards Special Publication 260

(Supersedes NBS Spec. Publ. 260-1970 Edition)

Nat. Bur. Stand. (U.S.), Spec. Publ. 260-1973 catalog, 96 pages (Apr. 1973) CODEN: XNBSAV

For sale by the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402

(Order by SD Catalog No. 03.10:260-1973 cat.). Price: $1.25, domestic postpaid; $1.00, GPO Bookstore Stock Number 0303-01144
CONTENTS

GENERAL INFORMATION 1 Renewal and Discontinued Standard

Reference Materials

New Standard Reference Materials

Catalog Supplements

Ordering

Terms

Domestic Shipments

Foreign Shipments

GUIDE FOR THE SUBMISSION OF

REQUESTS FOR THE DEVELOPMENT OF NEW OR RENEWAL

STANDARD REFERENCE MATERIALS 12

OTHER SERVICES OF THE NATIONAL

BUREAU OF STANDARDS 14

Calibration and Test Services

National Standard Reference Data

System

Standards Information Services

Technical Information and Publications

STANDARDS OF CERTIFIED CHEMICAL

COMPOSITION

Steels (chip form) 16

Plain carbon steel Low alloy steel High alloy steel Stainless steel Tool steel Steels (granular form) 18

Steels (solid form) 20

Ingot iron and low-alloy steel Special ingot irons and

low-alloy steel Stainless steel Tool steel Maraging steel High-temperature alloys

Oxygen standards

Cast Irons (chip form) ^°

Cast Steels, White Cast Irons, Ductile

Irons, and Blast Furnace Irons

(solid form) 28

Steelmaking Alloys 30

Nonferrous Alloys (chip form) 31

Aluminum base

Cobalt base

Copper base

Lead base

Magnesium base

Nickel base

Nickel oxide

Selenium base

Tin base

Titanium base

Zinc base

Zirconium base

Nonferrous Alloys (solid form) 34

Copper base

Lead base

Nickel base

Tin base

Titanium base

Titanium base-oxygen and

hydrogen only

Zinc base

Die casting alloys and spelter

Zirconium base

Gases in Metals 38

High-Purity Metals 40

Microprobe Standards 41

Primary, Working, and Secondary

Standard Chemicals 42

Microchemical Standards 42

Clinical Laboratory Standards 43

Biological Standards 43

Metallo-Organic Compounds 44

Environmental Standards 45

Analyzed gases

Permeation tubes

Analyzed liquids

Analyzed solids

Hydrocarbon Blends 46

Ores 47

Cements 48

Fertilizers 43

Minerals, Refractories, Carbides,

and Glasses 48

Trace Element Standards 51

Nuclear Materials 52

Special nuclear materials

Plutonium assay

Plutonium isotopic

Uranium assay

Uranium isotopic

Neutron density standards

Isotopic Reference Standards 53

Ion Activity Standards 54

pH standards

pD standards

Ion selective electrodes

iii
STANDARDS OF CERTIFIED PHYSICAL

PROPERTIES

Mechanical and Metrology Standards ... 55

Coating thickness

Density standards

Glass viscosity standards

Polymer standards

Elasticity standards

Heat standards 60

Superconductive thermometric fixed

point devices

Freezing point standards

Defining fixed points

Determined reference points

Melting point standards

Calorimetric standards

Combustion calorimetry

Solution calorimetry

Heat source calorimetry

Differential thermal analysis

Vapor pressure standards

Thermal conductivity standards

Thermal expansion standards

Thermocouple materials

Magnetic Standards 64

Magnetic susceptibility standard

Optical Standards g5

Spectrophotometric standards

Color standards for spectrophotometric-tristimulus integrator

system

Glass and liquid filters for

spectrophotometry

Thermal emittance standards

Refractive index standards

Reflectance standards

Radioactivity Standards 68

Alpha-particle standards

Beta-particle and gamma-ray gas

standards

Beta-particle, gamma-ray, and

. electron-capture solution standards

Contemporary standard for carbon- 14

dating laboratories

Environmental standards

Gamma-ray "point-source" standards

Radium gamma-ray solution standards

Radium solution standards for

radon analysis

Metallurgical Standards 71

Mossbauer Standards 71

Permittivity Standards 72

ENGINEERING TYPE STANDARDS

Standard Rubber and Rubber

Compounding Materials ?3

Reference Magnetic Tape 73

Sizing Standards 74

Glass spheres for particle size

Turbidimetric and fineness

standard (cement)

Color Standards 74

The ISCC-NBS centroid color charts

Paint pigment

Light-sensitive papers

Light-sensitive plastic chips

Photographic Standards 75

Surface Flammability Standards 75

Smoke Density Chamber Standards .... 76

Water Vapor Permeance 76

Internal Tearing Resistance Paper 75

Tape Adhesion Testing Standard

RESEARCFTMATERIALS 77

High-Purity Materials

Phosphors

GENERAL MATERIALS 78

Hydrogen in Steel

Nickel and Vanadium in Residual Oil

Absorbent Clay, (ASTM D2007)

INDEXES

Alphabetical Index 79

Numerical Index to SRM Certificates ... 85

iv
Standard Reference Materials

Issued by the National Bureau of Standards

This Catalog lists and describes the Standard Reference Materials (SRM's), Research Materials

(RM's), and General Materials (GM's) currently distributed by the National Bureau of Standards, as well as many of the materials currently in preparation. SRM's are used to calibrate measurement

systems and to provide a central basis for uniformity and accuracy of measurement. The unit and

quantity, the type, and the certified characterization are listed for each SRM, as well as directions

for ordering. The RM's are not certified, but are issued to meet the needs of scientists engaged in materials research. RM's are issued with a "Report of Investigation," the sole authority of which is the author of the report. The GM's are standardized by some agency other than NBS. NBS acts only

as a distribution point and does not participate in the standardization of these materials. Announcements of new and renewal SRM's, RM's, and GM's are made in the semi-annual supplements to this

Catalog, SRM Price and Availability List, the NBS Technical News Bulletin, and in scientific and

trade journals.

Key words: Analysis; characterization; composition; properties; Standard Reference Materials;

Research Materials; General Materials.

General Information

All of the Standard Reference Materials (SRM's), Research Materials (RM's), and General Materials (GM's) listed in this Catalog bear distinguishing names and numbers by which they are permanently identified. Each SRM, RM, or GM bearing a given designation is of identical characterization with every other sample bearing the same designation, within the limits required by the use

for which it is intended; or if necessary, it is given a serial number and an individual calibration.

The first SRM's issued by the Bureau were a group of ores, irons, and steels certified for chemical

composition, and by custom they came to be called "standard samples." At present, more than 800

SRM's are available, covering a wide range of chemical and physical properties, and the designation,

Standard Reference Material, is more appropriate. As the number of SRM's has increased, so has the

variety, with such new groups being established as: clinical laboratory standards, nuclear materials,

glass viscosity standards, rubber and rubber compounding materials, color standards, and coating

thickness standards. These groups are listed under the headings: Standards of Certified Chemical

Composition, Standards of Certified Physical Properties, Engineering Type Standards, Research

Materials, or General Materials. The groups of materials under these general headings are listed in the Table of Contents. An alphabetical index provides the location of a particular material, or group

of similar materials. A numerical index provides the date of the current Certificate issued with these

materials.

The detailed listing of materials indicates the nominal certification for which the material is issued, but the Certificate must be consulted for the actual certification. A number of SRM's are issued for which it is not feasible to supply numerical values, or for which such certification would

not be useful. These SRM's provide assurance of identity among all samples with the same designation, and permit standardization of test procedures and referral of physical or chemical data on unknown materials to a common basis.

1
Renewal and Discontinued Standard

Reference Materials

The preparation of "renewal" SRM's is intended to be completed by the time the existing supply

of each kind of material is exhausted, but this is not always possible. The renewal will not usually

be identical to its predecessor, but will be quite similar especially with regard to the characteristics

certified, and generally the renewal can be used in place of its predecessor. As an example, when the

first 0.1 percent carbon Bessemer steel was prepared in 1909, it was called Standard Sample No. 8. During the following years, a number of renewal batches, 8a, 8b, etc., were prepared; SRM 8j is now

available and represents the 10th renewal batch of 0.1 percent carbon Bessemer steel. While each of

these batches differ somewhat in detailed analysis from one batch to another, all retain the rela- tively high level of phosphorus, sulfur, and nitrogen, and low alloy metal content characteristic of

this type of material. It is not possible to supply preceding numbers of a renewal series when the

stock is exhausted. If little demand exists or an alternate source of supply has become available for a material, production may be discontinued permanently or until sufficient justification is obtained

to warrant renewal.

New Standard Reference Materials

New SRM's are issued from time-to-time, and are announced through semi-annual supplements to

this Catalog, through the NBS Technical News Bulletin, through news releases to scientific, technical, and trade publications, as well as directly to prospective users.

Catalog Supplements

SRM Price and Availability Lists are usually prepared semi-annually to keep the Catalog current. These supplements provide a complete list of the available SRM's and their prices and provide

descriptions of SRM's issued since the latest Catalog was printed.

Ordering

Orders should be addressed to the Office of Standard Reference Materials, Room B311 , Chemistry Building, National Bureau of Standards, Washington, D.C. 20234. Telephone (301) 921-2045.

Orders should give the amount (number of units), catalog number and name of the standard

requested. For example: 1 each, No. llh, Basic-Open-Hearth Steel, 0.2 percent C. These materials

are distributed only in the units listed. Acceptance of an lorder does not imply acceptance of any provision set forth in the order

contrary to the policy, practice, or regulations of the National Bureau of Standards or the U.S.

Government.

Orders received for "out-of-stock" materials are cancelled if only out-of-stock items are ordered.

On other orders, shipment is made of available materials and out-of-stock items are cancelled.

Back-orders are not accepted for out-of-stock materials; if a renewal lot of material is available, it will be furnished automatically.

2
Terms

Prices are given in the SRM Price and Availability List. These prices are subject to revision and

orders will be billed for prices in effect at the time of shipment. New SRM Price and Availability

Lists, when issued, are sent to users who have made purchases during the preceding twelve months,

and to persons or organizations who request them. No discounts are given on purchases of Standard

Reference Materials.

Remittances of the purchase price need not accompany purchase orders for firms or persons in

the North American continent, agents in the United States of foreign firms, or foreign firms with

established credit. Payment of invoices is expected within 30 days of receipt of an invoice. Payment

on foreign orders may be made by any of the following:

(a) UNESCO coupons,

(b) banker's draft against U.S.A. bank,

(c) bank to bank transfer to a U.S.A. bank,

(d) letter of credit on a U.S.A. bank, or

(e) by International Money Order.

Pro-forma invoice service will frequently require 6 to 8 weeks to process, and will be furnished

only to those requiring such service, or when credit has not been established.

Domestic Shipments

Shipments of material (except for certain restricted categories, e.g., hydrocarbons, special nuclear materials, compressed gases, rubber, rubber compounding materials, and radioactive standards)

intended for the United States, Mexico, and Canada are normally shipped prepaid (providing that

the parcel does not exceed the weight limitations as prescribed by Postal Laws and Regulations)

unless the purchaser requests a different mode of shipment, in which case the shipment will be sent

collect. The Bureau does not prepay such shipping charges. Hydrocarbons, organic sulfur compounds, compressed gases, rubber, rubber compounding materials, radioactive standards, and similar

materials are shipped express collect.

Foreign Shipments

Orders for small weight shipments will be shipped by prepaid International Air Parcel Post. Other

shipments will be shipped prepaid International Parcel Post, except those shipments exceeding the

parcel post weight limitations, which must be handled through an agent (shipping or brokerage

firm) located in the U.S.A. as designated by the purchaser. Shipments handled through an agent will

be packed for overseas shipment and forwarded via express collect to the U.S.A. firm designated as agent.

NOTE: Orders and inquiries submitted in English will be processed more rapidly than those re- quiring translations.

Introduccion

Todo el Material de Referenda de Normas (Standard Reference Materials-SRM's), Material de

Investigation (Research Materials-RM's), y Material General (General Materials-GM's), que figura en este Catalogo lleva nombres yf numeros que lo identifican, en forma permanente. Cada

/ SRM, RM

o GM designado en forma esp^cifica, tiene caracteristicas identicas a las de todas las de^nas muestras

que llevan la misma designacion, dentro de los limites que requiere el uso al cual esta destinada; o, en caso necesario, se le asigna un numero de serie y una calibration individual.

3
Los primeros SRM's emitidos por la Direccio'n fueron un grupo de minerales, hierros y aceros

certificados en cuanto a su composicion quimica, y se tomo la costumbre de llamarlos "muestras de

normas" (standard samples). En, la actualidad se cuenta con mas de 800 SRM's que cubren una

amplia gama de propiedades quimicas y fisicas, y la designacion "Material de Referencia de Norma"

(Standard Reference Material) es mas apropiada. A medida que ha aumentado el numero de SRM's,

ha aumentado la diversidad de estos, estableciendose nuevos grupos, tales como normas para laboratories clinicos, materiales nucleares, normas de viscosidad de vidrio, normas para goma y compuestos para goma, normas de colores, asi'como normas de grosor de revestimiento. Estos grupos

figuran bajo los encabezamientos: Normas de Composicion Quimica Certificada (Standards of Certified Chemical Composition), Normas de Propiedades Fisicas Certificadas (Standards of Certified

Physical Properties), Normas de Tipo de Ingenieria (Engineering Type Standards), Materiales de

Investigation (Research Materials), o Materiales Generates (General Materials). Los grupos de materiales que corresponden a estos titulos generates aparecen en el Indice de Materias. Un indice

alfabetico indica la ubicacion de determinado material. Un indice numerico ofrece la fecha del

Certificado vigente emitido con los materiales en cuestion.

La lista detallada de materiales indica la certification nominal para la cual se emite el material,

pero es necesario consultar el Certificado para encontrar la certificacion precisa. Se emite SRM's

para los cuales no es factible suministrar valores numericos o para los cuales tal certificacion no seria

util. Estos SRM's ofrecen la seguridad de que son identicas todas las muestras que llevan la misma

designacion, lo cual permite normalizar los procedimientos de prueba y referir a una base comun los datos fisicos o quimicos de materiales desconocidos.

Norma de Renovacion y Descontinuacion

Materiales de Referencia

Se tiene el proposito de completar la preparacion de SRM's "de renovacion" para cuando esten agotadas las existencias de cada clase de material, pero esto no es siempre posible. Por lo general, el material de renovacidn no sera'identico a su predecesor, pero sera'bastante similar, en especial en lo que a las caracteristicas certificadas se refiere, y por lo general la renovacion puede ser utilizada en

lugar de su predecesor. Por ejemplo, en 1909, cuando se preparo el primer acero Bessemer con 0.1

por ciento de carbono, fue designado como "Standard Sample No. 8." Durante los anos subsiguientes, fueron preparados lotes de renovacion 8a, 8b, etc. En la actualidad esta'disponible el SRM 8j,

que representa la decima renovacion de acero Bessemer con 0. 1 por ciento de carbono. Si bien cada uno de estos lotes difiere en algo en cuanto a analisis detallado entre lote y lote, todos ellos tienen el nivel relativamente alto de contenido de fosforo, azufre, nitrogeno y metal de baja aleacioh que es caracteristico de este material. Una vez agotadas las existencias, no es posible suministrar numeros

precedentes de una serie de renovaciones. Si existe poca demanda o se encuentra disponible una

fuente alternativa de suministro de determinado material, es posible que la produccion sea descontinuada en forma permanente, o hasta que se obtenga justification suficiente para una renovacion.

Nuevo Material de Referencia de Normas

De cuando en cuando se emite nuevos SRM's, los cuales son anunciados mediante suplementos

semestrales de este Catalogo, por el NBS Technical News Bulletin, mediante informativos enviados a publicaciones cientificas, tecnicas y del ramo, asi'como directamente a los usuarios en potencia.

Suplementos de Catalogo.

Por lo general, las Listas de Precios y Disponibilidad de SRM's (SRM Price and Availability List) son preparadas semestralmente para mantener al dia el Catalogo. Estos suplementos ofrecen una

lista completa de los SRM's disponibles, asi'como sus precios, y dan la description de SRM's

emitidos desde que fuera impreso el ultimo Catalogo.

4
Pedidos

Los pedidos deberan ser hechos a la siguiente direccion:

Office of Standard Reference Materials

Room B31 1, Chemistry Building

National Bureau of Standards

Washington, D.C. 20234

El tele'fono es (301) 921-2045. En los pedidos se debera'indicar el numero de unidades, numero y

nombre del SRM. Por ejemplo: 1 muestra, No. 1 lh, Acero Siemens-Martin Basico, 0.2 por ciento C. Estos materiales son distribuidos solamente en las unidades que figuran en la lista. Pedidos qu£ se recibe por materiales "agotados" son cancelados y devueltos si se ha pedido

solamente articulos agotados. En caso contrario, se remite los materiales disponibles y se cancela los materiales agotados. No se acepta pedidos retroactivos por materiales agotados; si un lote de material de renovacion esta'disponible sera suministrado en forma automatica.

Condiciones

Los precios aparecen en^la Lista de Precios y Disponibilidad de SRM's (SRM Price and Availability List). Estos precios estan sujetos a cambio y se facturara los pedidos a los precios que esten en

vigencia en el momento en que se hace el embarque. Al ser emitidas las nuevas Listas de Precios y

Disponibilidad, son enviadas a los usuarios que han hecho compras en el curso de los doce meses

precedentes, y a las personas u organizaciones que las solicitan. No se hace descuentos en las compras de Materiales de Referenda de Normas.

Ordenes de compra hechas por empresas o personas en el continente norteamericano, agentes en

los Estados Unidos de empresas extranjeras, o empresas extranjeras de cre'dito bien establecido, no

necesariamente tienen que ir acompanadas del valor de la compra. Se espera que las facturas sean pagadas a los treinta dias de recibidas. El pago de pedidos desde el extranjero se puede hacer

mediante cualquiera de los siguientes:

(a) cupones de la UNESCO,

(b) giro bancario contra un banco estadounidense,

(c) transferencia de banco a un banco en los Estados Unidos,

(d) carta de cre'dito en un banco en los Estados Unidos, o

(e) Giro Internacional.

Suele requerir 8 semanas procesar facturas pro-forma, y seran suministradas solamente a aquellos

que requieren de tal servicio, o cuando no ha sido establecido el credito.

Remesas dentro del Pais

Los materiales (a excepcion de ciertas categorias restringidas, por ejemplo hidrocarburos, materiales nucleares especiales, gases comprimidos, compuestos organicos de azufre y normas radioactivas) destinados a los Estados Unidos, Mexico y el Canada' por lo general son remesados con porte

pagado (siempre y cuando que el paquete no exceda las limitaciones prescritas por las Leyes y el Reglamento Postal), a no ser que el comprador solicite una forma de embarque diferente, en cuyo

caso se enviara'con flete por pagar. Esta Direccion no paga por tales fletes. Hidrocarburos, compuestos organicos de azufre, gases comprimidos, materiales para compuestos de goma, normas radioactivas y material similar, son remitidos por expreso con flete por cobrar.

5
Embarques al Extranjero

Embarques de poco peso por valor de mas de $ 1 00 dolares con porte pagado seran enviados por

encomienda aerea con flete pagado. Los embarques que excedan las limitaciones de encomienda

postal deberan ser manejados por intermedio de un agente (empresa de transportes o corredor)

ubicado en los Estados Unidos, segun indicacidn del comprador. Tales paquetes seran embalados

para embarque mantimo y remesados como expreso por cobrar a la empresa en los Estados Unidos

que ha sido designada como agente.

Pedidos que no han sido pagados seran embarcados con flete pagado por Encomienda Postal

Internacional, sujeto a limitaciones en cuanto a tamano, peso y categoria de material. Cualquier otra forma de embarque solicitado por un cliente debera'ser pagada por ese cliente. (Embarques que por

cualquier motivo sean excluidos de remesa por Encomienda Postal Internacional deberan ser manejados por intermedio de un agente [empresa de transporte o corredor] ubicado en los Estados

Unidos, segun indicacidn del comprador.) Tales paquetes serali embalados para embarque maritimo

y remesados como expreso por cobrar a la empresa en los Estados Unidos que ha sido designada

como agente.

Nota: Pedidos y consultas presentados en idioma ingles seran tramitados en forma mas rapida que

aquellos que requieren traduccion.

Avant-Propos

Toutes les mesures etalon des materiaux classes dans la categorie SRM, (Standard Reference

Material) celles des materiaux de recherche ou RM (Research Material), et celles des materiaux

divers ou GM (General Material) repertories dans ce catalogue se sont vus attribuer une designation

et un numero de reference distincts afin de les identifier

va titre permanent. Chacun des mate'riaux

tombant dans les categories SRM, RM ou GM est identique en ce qui concerne sa caracterisation

va tout autre echantillon de meme designation, compte tenu des tolerances etablies pour son usage. Si

necessaire, le materiau recpit un nume^ro de serie et un calibrage individuel.

Les titrages des premiers SRM ei;ablis par le Service des Poids et Mesures concernaient certains

minerais, du fer et des aciers qui, par la suite, devaient etre designes sous le nom de "echantillontype" (Standard samples). A l'heure actuelle, il existe plus de 800 SRM aux proprietes chimiques et physiques tres variees. II est done apparu plus approprie'de les designer sous le nom de "Mesures

etalon pour mateliaus repertories" (Standard Reference Materials). Au fur et a mesure que le nombre de SRM augmentait il en etait de meme de la diversite des nouvelles categories de normes a

etablir pour, par exemple : les laboratoires meclicaux, les matdriaux nucleaires, la viscosite'dynamique du verre, le caoutchouc et ses derives, les produits colorants et l'epaisseur des enduits et revetements. Des rubriques speciales ont ete etablies

v

a cet effet: Normes de composition chimique

(Standards of Certified Chemical Composition); Normes de propriele's physiques (Standards of

Certified Physical Properties); Normes d'Engineering (Engineering Type Standards); Materiaux de

recherche (Research Materials); ou Materiaux divers (General Materials). Les categories de materiaux

repertories sous ses rubriques sont indiquees va ia table des matieres. II suffit de consulter l'index

presente' par ordre alphabe'tique pour^trouver la page se rapportant

va un materiau particulier. Un

index numerique fournit la date de delivrance du brevet correspondant aux normes exigees pour tel ou tel materiau.

La liste detaillee des materiaux constituant une homologation^ caractere purement nominal, il est necessaire de consulter le brevet delivre'pour chacun des materiaux par le Service des Poids et Mesures. II existe cependant un certain nombre de SRM pour lesquels il est impossible de fournir

des valeurs numeriques ou pour lesquels une^telle certification serait inutile. Ces SRM sont identiques aux autres echantillons de meme designation. lis permettent d'une uniformisation des

methodes experimentales et dans le cas de materiaux inconnus de se baser sur des donnees de

physique ou de chimie communes.

6
Mises a jour et discontinuation des normes.

Materiaux repertories.

La mise

v

a jour de la liste concernant les SRM doit en principe etre terminee lorsque les stocks de

chaque lot de materiaux sont epuises, cela n'est toutefois pas toujours possible. Habituellement le nouveau lot n'est pas rigoureusement identique au^prececlent mais en est cependant tres proche, ses specifications etant les memes si bien qu'en regie generale il peut etre utilise en remplacement du lot precedent. Par exemple, lorsque le premier lot d'acier Bessemer a 0,1% de teneur en carbone a ete prepare en 1909, il s'appelaitva l'epoque "Standard Sample No. 8". Les lots suivants furent designes

8a, 8b, etc... Le SRM 8j., actuellement en stock correspond au dixieme lot de lingots Bessemer

fabriques a partir d'une teneur en carbone de 0,1%. Bien que chacun de ces lots differe quelque peu

les uns des autres, si on les analyse en detail Ton constate qu'ils comportent tous une teneur

relativement elevee en phosphore, souffre et azote ainsi qu'une faible proportion d'alliage, caracteristique

va ce type de materiau.^Pour les raisons exposees ci-dessus, il n'est done pas possible de

fournir des lingots appartenant a une serie precedente epuisee. De surcroit, si la demande pour un

type de materiau donne'est marginale ou si une autre source d'approvisionnement est disponible

pour tel ou tel materiau, la production peut alors en etre suspendueva titre permanent ou jusqu'a ce qu'un renouvellement des stocks soit justifie.

Etablissement de normes pour nouveaux materiaux repertories.

Les mises\ jour relatives aux SRM se font de temps

va autre et sont publie'es dans les supplements

semestriels de ce catalogue, dans le NBS Technical News Bulletin ou dans des articles paraissant dans

des revues scientifiques, techniques ou commerciales ou encore directement porte'es a la connais- sance de futures personnes interessees.

Supplements du Catalogue.

Les tarifs et listes de materiaux SRM disponibles sont (SRM Price and Availability List), en regie

generale, publies semestriellement afin que le catalogue demeure a jour. Ces supplements fournissent une liste complete des SRM disponibles et des tarifs en vigueur ainsi que les specifications des SRM

repertories depuis la derniere publication du catalogue.

Modalites de commande.

Les lettres et bordereaux de commande doivent etre adresses

va : Office of Standard Reference

Materials, Room B31 1 , Chemistry Building, National Bureau of Standards, Washington, D.C. 20234.

Telephone: (301) 921-2045. Les commandes doivent specifier la quantite desiree (nombre unitaire),

le numero de reference du catalogue ainsi que les specifications et titrage. Exemple: Qte. 1, Ref.: no. 1 lh, Acier sur sole basique^a teneur de 0,2% de carbone (en anglais, de preference).

Les bordereaux de commande recus pour des materiaux dont les stocks sont epuises sont annules

et renvoyes a leur expediteur si tous les articles demandes sont hors stock. Dans ce cas, seuls les materiaux disponibles sont expedie^. Les soldes de commande ne sont pas^honores pour ce qui concerne les materiaux dont les stocks sont epuise's, si un lot est renouvele, le mate'riau est alors

expedie automatiquement.

Conditions de paiement.

Les tarifs en vigueurs relatifs aux SRM figurenA cote de la liste des materiaux disponibles (SRM

Price and Availability List). Ces tarifs sont sujets

Na revision et les factures sont etablies en fonction

des tarifs applicables au moment de l'expedition de la commande. Les tarifs et listes de materiaux

7
en stock sont addressees aux clients ayant passe' commande dans les douze mois ayant precede

1'estabUssement de ces tarifs et listes, ainsi qu'aux personnes ou organisations en sollicitant l'envoi.

Aucun rabais n'est consenti sur les commandes de SRM.

Pour toute firme ou particulier, etabli sur le continent nord americain, representant aux Etats- Unis des firmes etrangeres ou une societe etrangere, offrant des garanties bancaires, il n'est pas

necessaire de joindre le reglement au bordereau de commande. Cependant les factures doivent etre reglees dans les 30 jours suivant leur reception, les commandes passees a I'etranger peuvent etre reglees de la maniere suivante:

(a) Coupons UNESCO

(b) Lettre de change a l'ordre d'une banque americaine

(c) Transfert de banqueva banque dans un etablissement ame'ricain.

(d) Lettre de credit

va l'ordre d'une banque ame'ricaine

(e) ou par mandat international.

L'etablissement de factures pro-forma entraine frequemment un delai de 6

v

a 8 semaines.Elles ne seront fournies que sur demands expresse des interesses ou en 1'absence d'une

ouverture de credit.

Expeditions^ destination du continent nord-americain.

Les expeditions de materiaux (a l'exclusion toutefois de certaines categories faisant l'objet

de restrictions tels que : hydrocarbures, materiaux nucleaires speciaux, gaz comprimes, cornpose's de souffre organique, elalons pour matieres radio-actives) ^a destination des Etats-Unis,

du Mexique et du Canada sont en general reglees d'avance (a condition que le colis n'excede

pas les limites des poids fixees aux termes des reglements postaux en vigueur) et sauf si le destinataire desire un mode d'envoi different, auquel cas le colis est expedie contre remboursement, et en expres.

Expeditions a I'etranger.

Les colis legers dont la valeur excede $100 et dont le contenu

v

a ete'rdgle' d'avance seront

expedies par la poste aerienne avec la mention "marchandise reglee". Les expeditions de materiaux

dont le poids excede les limites fixees pour l'envoi de colis postaux doivent etre faites par 1,'inter- mediaire d'un agent maritime ou d'un transitaire ayant ses bureaux aux Etats-Unis et designe par le destinataire. Les colis seront emballes specialement pour envoi

v

a I'etranger et expedies en expres et contre remboursementva la firme americaine agissant en qualite'de Transitaire.

L'expeclition des commandes non encore reglees se fera par colis postal, regime international, et compte tenu des restrictions imposees, sur le volume, le poids et les categories de materiaux, par le Service des Postes. Tout autre mode d'expedition sollicite'par un client doit etre r^gle'directement

par ses soins. (Les expeditions ne pouvant etre faites pour une raison quelconque par colis postal,

regime international, devront etre confieesva un agent maritime ou

va un transitaire dont les bureaux

sont installes aux Etats-Unis et designe'par le destinataire. Ces colis seront specialement emballes

pour expedition

va I'etranger en expres et contre remboursementva la firme americaine agissant en

qualite'de transitaire.

N.B. Les commandes et demandes de renseignements recligees en anglais seront satisfaites plus

rapidement que celles exigeant une traduction.

Katalog der Standard-Nachweis-Materialien

Alle Standard-Nachwers-Materialien (Standard Reference Materials oder SRM's), ForschungsMaterialien (Research Materials oder RM's) und Allgemein-Materialien (General Materials oder

GM's) die in diesem Katalog aufgefuehrt sind tragen unterschiedliche Namen und Nummern durch

welche sie jederzeit identifizierbar sind. Jedes SRM, RM oder GM das eine gewisse Kennzeichnung

8
traegt hat dieselben Eigenschaften wie jede andere Probe versehen mit derselben Kennzeichnung

innerhalb der Nachweisgrenzen die fuer einen bestimmten Zweck angegeben sind; andernfalls wird

einer solchen Probe zweckbedingt eine Seriennummer als auch eine individuelle Eichung zugeteilt.

Die ersten vom Normamt (National Bureau of Standards oder NBS) herausgegebenen SRM's

waren eine Reihe von Erzen, verschiedene Eisen und Staehle alle bescheinigt mit Bezug auf die

jeweilige chemische Zusammensetzung, so dass im Laufe der Zeit diese Materialien als "Normproben" (Standard Samples) allgemein bekannt wurden. Zur Zeit sind ueber 800 SRM's verfuegbar

die ein weites Gebiet chemischer und physikalischer Eigenschaften umfassen, auf Grund dessen die

Bezeichnung "Standard-Nachweis-Material" sachgemaesser ist. Ebenso wie die Anzahl der SRM's

zugenommen hat so ist auch derer Vielseitigkeit angestiegen: Neue Arten von Normproben wie z'.B. klinische Labornormen, Kerntechnische Materialien, Normen zur Bestimmung der Glasviskositaet,

Gummi-und Gummiverarbeitungs-Materialien, Farbnormen, als auch Normen zur Oberflaechenschichte-Dichtemessung, sind inzwischen herausgebracht worden. Derartige Gruppen von StandardNachweis-Materialien sind hierbei unter den folgenden Ueberschriften angegeben: Proben mit

amtlich bescheinigter chemischer Zusammensetzung (Standards of Certified Chemical! Composition), Proben mit attestierten physikalischen Eigenschaften (Standards of Certified Physical Properties), Kontroll-Proben mit Pruefungszeugnis fuer Anwendungen in der Technik (Engineering Type

Standards), Forschungs-Materialien (Research Materials) und Allgemein-Materialien (General Materials). Die Gruppen von Materialien die diesen Kategorien zugehoeren sind in dem Inhaltsverzeichnis

angegeben. Ein alphabetisch angeordneter Index gibt die Stelle jedes gewissen Materials oder auch

jeder Gruppe aehnlicher Materialien an. Ein Nummerindex gibt das Datum des gueltigen Beglaubigungs-Zeugnisses an das jedem dieser Materialien zugeschrieben ist. Die ausfuehrliche Anordnung dieser Materialien gibt den nominellen Richtwert an der dem

entsprechenden Material zugesprochen ist; trotzdem muss in jedem einzelnen Falle das originate

Beglanbigungs-Zeugnis fuer den rechtmaessigen Richtwert in Anbetracht gezogen werden. Eine

Anzahl von SRM's werden angeboten fuer die es nicht moeglich ist entweder einen Zahlenwert

(Eichwert oder Richtwert) in dem Pruefungszeugnis anzugeben oder fuer die eine derartige Beglaubigung von fraglichem Vorteil ist. SRM's dieser Art gewaehrleisten die Identitaet aller Proben

die mit ein und derselben Kennzeichnung versehen sind und demzufolge ermoeglichen die Normung

von Versuchsverfahren als auch Bezugnahme auf eine gemeinsame Grundlage von physikalischen

und chemischen Daten hinsichtlich unerforschter Materialien.

Erneuerung und Ausscheidung von Standard-Nachweis-Materialien

Die Vorbereitung von "Erneuerungs-" SRM's ist meistens dann abgeschlossen wenn bei einem

gewissen Zeitpunkt der vorhandene Betrag eines jeden Materials erschoepft ist; das ist jedoch nicht

immer moeglich. Im allgemeinen ist das neuere Material dem aelteren Vorlaeufer nicht unbedingt

identisch; trotzdem werden sie sich beiderseits sehr aehnlich sein besonders in Bezug auf die Eigenschaften fuer die das jeweilige SRM bescheinigt ist, so dass man im allgemeinen das neuere Material an Stelle des aelteren Materials benutzen kann. Zum Beispiel: Als der erste 0,1 Prozent Kohlenstoff

Bessemer Stahl im Jahre 1909 vorbereitet wurde, erhielt diese Analysen-Kontrollprobe die Kennzeichnung "Standard Sample No. 8". Im Laufe der folgenden Jahre wurde eine Anzahl von Erneuerungsproben, gekennzeichnet 8a, 8b, u.s.w., vorbereitet. SRM 8j ist inzwischen erhaeltlich und dieses

Material ist daher die zehnte Erneuerungsprobe des 0,1 Prozent Kohlenstoff Bessemer Stahls. Waehrend sich jede dieser Stahlschmelzen in Anbetracht der Richtanalyse von der anderen wenn auch nur

gering unterscheidet, so enthaelt jede dieser Schmelzen den relativ hohen Gehalt an Phosphor,

Schwefel und Stickstoff und einen niedrigeren Prozentsatz an Legierungsmetallen der kennzeichnend fuer diese Art Material ist. Es ist nicht moeglich vorangegangene Nummern einer gewissen

SRM-Erneuerungs-Serie zu liefern sobald der Vorrat eines solchen Materials aufgebraucht ist. Sofern nur geringe Nachfrage besteht, oder eine andere Lieferungsquelle fuer eine bestimmte AnalysenKontrollprobe verfuegbar ist, so kann die Vorbereitung bei NBS eines solchen Materials entweder

ganz eingestellt oder voruebergehend unterbrochen werden bis ausreichender Grund vorhanden ist, eine Erneuerung desselben zu rechtfertigen.

9
Neue Standard-Nachweis-Materialien

Von Zeit zu Zeit werden neue SRM's herausgegeben die durch halbjaehrige Nachtraege zu diesem

Katalog bekannt gemacht werden. Neuerscheinungen dieser Art werden ebenso zur Kenntnis ge- bracht durch das "NBS Technical News Bulletin" als auch durch Veroeffentlichungen in ver- schiedenen wissenschaftlichen, technischen Fachschriften und Fachhandelsblaettern sowie Ankuendigungen direkt gerichtet an Kunden und interessierte Kaeufer.

Katalog Nachtraege

Eine SRM Preisliste mit Lieferungsverzeichnis (SRM Price and Availability List) wird gewoehnlich halbjaehrlich veroeffentlicht um den Katalog auf dem laufenden zu halten. Derartige Nachtraege bieten ein vollstaendiges Verzeichnis aller verfuegbarer SRM's und deren Preise und enthalten

Beschreibungen derjenigen SRM's die nach dem Druck des letzten Katalogs herausgegeben sind.

Bestellungen

Bestellungen muessen an die

Office of Standard Reference Materials

Chemistry Building, Room B311

National Bureau of Standards

Washington, D.C. 20234

gerichtet werden. Telefon: (301) 921-2045.

Bestellungen muessen die Anzahl (Menge jeder einzelen Probe) und Bezeichnung (Nummer und

Namen) des gewuenschten Standard-Nachweis-Materials angeben. Zum Beispiel: Ein, No. llh,

Siemens Martin Stahl, 0,2 Prozent C. Wir bitten, Bestellungen in Englisch zu erhalten, sofern

moeglich. In diesem Falle lautet die obige Bestellung folgendermassen: "1 each, No. llh, BasicOpen-Hearth Steel, 0.2 percent C." Diese Materialien sind nur in den beschriebenen MengeEinheiten erhaeltlich.

Erhalt einer Bestellung bei NBS schliesst keinerlei Vereinbarung ein mit irgendwelchen Bedingungen denen in besagter Bestellung Ausdruck gegeben ist, insofern als solche Bedingungen im

Gegensatz zu den Vorschriften, ueblichen Handhabungen und Regulierungen des National Bureau of

Standards oder der U.S. Regierung stehen.

Bestellungen fuer Materialien die aus dem Handel gezogen sind werden als ungueltig erklaert und

an den Kunden zurueck geschickt sofern nur Bestellungen fuer nicht mehr erhaeltliche Proben bei

NBS in Empfang genommen werden. Bei anderen Bestellungen werden die im Lager vorhandenen

Materialien geliefert und die gegebenenfalls nicht mehr vorhandenen Materialien einfach gestrichen.

Gleichermassen, Nachbestellungen von Materialien nicht mehr auf Lager koennen nicht an- genommen werden; sobald eine Neuausgabe eines angeforderten Materials verfuegbar ist wird

dasselbe unverzueglich geliefert.

Zahlungsbedingungen

Preise sind in der SRM Preis- und Lieferungliste (SRM Price and Availability List) angegeben. Die

genannten Preise werden von Zeit zu Zeit einer Beruecksichtigung unterzogen und Bestellungen

werden berechnet zu den Preisen in Geltung zur Zeit des Versands. Neu veroeffentlichte SRM

Preis-und Lieferungslisten werden an Kunden geschickt die in den vergangenen zwoelf Monaten ein

Material angefordert haben. Diese Listen sind ebenso erhaeltlich bei Privatpersonen oder Betrieben

die dafuer Antrag stellen. Wir moechten darauf hinweisen, dass wir keinen Rabatt auf StandardNachweis-Materialien irgend welcher Art gewaehrleisten koennen.

Zahlung braucht einer Bestellung nicht beizuliegen solange diese von Personen oder Firmen im

Nordamerikanischen Kontinent kommt, oder diese von Vertretungen von auslaendischen Firmen in

den Vereinigten Staaten, oder von auslaendischen Firmen mit etabliertem Kredit stammt.

10
Zahlung wird innerhalb von 30 Tagen nach Erhalt der Rechnung erwartet. Zahlungen fuer

Bestellungen aus dem Ausland koennen wie folgt verschiedentlich gehandhabt werden:

(a) durch UNESCO Coupons,

(b) durch Bankbezug gegen eine Bank in den U.S.A.,

(c) durch Bankueberweisung an eine Bank in den U.S.A.,

(d) mittels Kreditbrief an eine Bank in den U.S.A., oder

(e) durch eine internationale Geldueberweisung.

Pro-forma Abrechnungsdienst nimmt gewoehnlich 6 bis 8 Wochen in Anspruch und wird nur auf

Antrag geleistet oder wenn Kredit nicht vorhanden ist.

Inlandversand

Versand von Materialien (mit Ausnahme von gewissen Beschraenkungen, wie z.B. der Versand von Kohlenwasserstoffen, besonderen Materialien der Kerntechnik, verdichteten Gasen, Gummi und

Gummi-Verarbeitungsmaterialien, als auch radioaktive Probematerialien) innerhalb der Vereinigten

Staaten, Mexiko und Kanada geschieht normalerweise unter Vorauszahlung (solange die Lieferung

nicht entsprechende Gewichtsbegrenzungen der Postvorschriften ueberschreitet). Andernfalls, sollte der Kunde eine andere Weise des Versands verlangen, dann wird die Ware so versandt dass sie bei

Empfang zahlbar ist. Das Normamt leistet keine Vorauszahlungen derartiger Versandspesen. Kohlenwasserstoffe, organische Schwefelverbindungen, verdichtete Gase, Gummi-Verarbeitungsmaterialien,

radioaktive Stoffe und aehnliche Materialien werden per Express geliefert, mit Versandkosten zu

Lasten des Empfaengers, zahlbar bei Erhalt.

Ueberseeversand

Lieferungen von nur geringem Gewicht werden als Versandspesen-vorausbezahlte Bestellung per

internationale Paket-Luftpost befoerdert. Lieferungen anderer Art werden als Versandspesenvorausbezahlte Ware durch internationale Paketpost befoerdert. Eine Ausnahme sind Lieferungen

die gewisse Paketpost-Gewichtsbestimmungen ueberschreiten; diese muessen durch eine von dem

Kunden beauftragte Agentur (Versand-oder Maklerfirma), ansaessig in den U.S.A., gehandhabt

werden. Solche von einem Agenten vollzogenen Bestellungen die fuer den Ueberseeversand

bestimmt sind werden entsprechend verpackt und via Express an den von dem Kunden angeforderten Vertreter in den U.S.A. weitergeleitet, zahlbar durch den Agenten an Erhalt der Lieferung.

Anmerkung: Bestellungen und Anfragen koennen schneller bearbeitet werden wenn sie auf Englisch

erfolgen im Vergleich zu solchen, die eine Uebersetzung erfordern.
Guide for the Submission of Requests

for the Development of New or Renewal Standard Reference Materials

August 20, 1964

(June 1, 1970 -Revised)

Introduction

The National Bureau of Standards presently has available more than 800 Standard Reference

Materials. It is also working on the development of about 150 new ones and has on hand requests

for the preparation of many others. The requests have always far exceeded the Bureau's capacity to produce and certify these materials.

Policy

One of the functions of the National Bureau of Standards is to develop, produce, and distribute

Standard Reference Materials that provide a basis for comparison of measurements on materials and

aid in the control of production processes in industry. To help carry out this function, the Office of

Standard Reference Materials evaluates the requirements of science, industry, and government for

carefully characterized reference materials, and directs their production and distribution. Emphasis

is given to providing NBS Standard Reference Materials (a) where attainment of needed accuracy of

analysis or accuracy of measurement of characteristics is not economically or technically feasible

elsewhere, and where such accuracy is generally important to users, (b) where industry-wide standards for commerce are needed from a neutral supplier who is not otherwise available, and (c) where

continuing availability of highly characterized material from a common source is important to

science, industry, or government.

The National Bureau of Standards recognized and had responded to the need for broadening the

present program on reference materials to include all types of well-characterized materials that can

be used to calibrate a measurement system or to produce scientific data that can be readily referred

to a common base. With this broadening, however, it still remains apparent that the demand for new

Standard Reference Materials will continue to greatly exceed the Bureau's capacity for development. Therefore, requests for new Standard Reference Materials that will have limited use and for

which the need is not very great will have to be deferred in favor of requests clearly showing a

critical need. For the purpose of determining which requests are to receive top priority, the National Bureau of Standards will need, and will rely heavily upon, the information supplied by

industry, either through its own representatives or through interested committees, such as those of

the American Society for Testing and Materials, the American National Standards Institute, the

International Organization for Standardization, etc. Accordingly, while the Bureau welcomes all requests for the development of new Standard

Reference Materials, it will help both the Bureau, and industry as well, if requests are accompanied

by such information as will permit an assessment of the urgency and importance of proposed new

reference materials.

12
Information Needed

Those requesting the development of new Standard Reference Materials should supply as much as possible of the following information:

(1) Short title of Standard Reference Material.

(2) Purpose for which the new standard material is needed.

(3) Reasons why the new standard material is needed.

(4) Special characteristics and/or requirements for the material. Include additional requirements and reasons, if more than one standard material is necessary for standardization in

this area. (5) Your estimate of the possible present and future (10 year) demand for this new standard in your own operations and elsewhere.

(6) Whether this standard, or a similar standard, can be produced by, or obtained from a source other than the National Bureau of Standards. If so, give reasons to justify its preparation by

(7) Miscellaneous pertinent comments to aid justification for the new Standard Reference

Material, such as: (a) an estimate of the range of application, monetary significance, and

scientific and/or technological significance including, when feasible, estimates of the impact

upon industrial productivity or growth, and (b) supporting letters from industry leaders,

trade organizations, interested committees and others.

NBS.

13
Other Services of the National Bureau of Standards

The following is a list of some of the services offered by NBS that may be of interest to SRM

users. For general information see the entry on Technical Information and Publications.

Calibration and Test Services of the

National Bureau of Standards

The measurement services of the National Bureau of Standards include the calibration of standards, test of instruments, and certain interlaboratory testing programs. These services are listed in

NBS Special Publication 250, Calibration and Test Services of the National Bureau of Standards.

[Available from the Superintendent of Documents, U.S. Government Printing Office, Washington,

D.C. 20402, as SD Catalog No. CI 3. 10: 250 (1970Edition) for $2]

.

All technical inquiries regarding Calibration and Test Services, except those services related to

electrical standards in the radio frequency region (above 30 kHz) or to time and frequency standards, should be directed to: Office of Measurement Services

Room B154, Metrology Building

National Bureau of Standards

Washington, D.C. 20234

Telephone: (301) 921-2807.

Technical Inquiries related to electrical standards in the radio frequency range (above 30 kHz) or

to time and frequency standards, should be directed to: Office of Measurement Services

National Bureau of Standards

Boulder, Colorado 80302

Telephone: (303) 499-3753.

National Standard Reference Data System

The National Standard Reference Data System (NSRDS) is a nationwide program established to make critically evaluated data in the physical sciences available to the technical community. It publishes compilations of critically evaluated data, critical reviews and bibliographies. A complete

listing of the publications of the NSRDS is available from the Office of Standard Reference Data

(OSRD). The OSRD responds in a limited way to queries within the scope of the program by

providing references, referrals, documentation, or data, as available. The program's monthly newsletter is available on request. Inquiries or requests for further information should be directed to: Information Services

Office of Standard Reference Data

Room A523, Administration Building

National Bureau of Standards

Washington, D.C. 20234

Telephone: (301) 921-2583.

Standards Information Services

Engineering and Product Standards

This service maintains a reference collection of some 20,000 engineering standards issued by more than 380 U.S. technical societies, professional organizations, and trade associations; specifications of the various State purchasing offices; standards and specifications of U.S. civilian government agencies; and the specifications and standards of the major foreign national and international

standardizing bodies. The collection is open to the public Monday through Friday from 8:30 a.m.

to 5 p.m.

The center publishes general and specialized indexes of standards. Information services consist of

searching a Key-Word-In-Context (KWIC) Index to determine whether there are any published

standards, specifications, test methods, or recommended practices for a given item or product.

14
Inquiries are referred to the appropriate source to obtain copies of standards. The Center neither

sells nor distributes standards.

Inquiries or requests for additional information should be directed to: Standards Information Service

Room B 1 5 1 , Technology Building

National Bureau of Standards

Washington, D.C. 20234

Telephone: (301) 921-2587.

Technical Information and Publications

The Office of Technical Information and Publications maintains a general correspondence and

inquiry service on the technical activities of the National Bureau of Standards. Inquiries of a general

nature and not covered by the services listed above should be directed to: Office of Technical Information and Publications

Room A607, Administration Building

15
Standards of Certified Chemical Composition

Steels (Chip Form)

These SRM's were prepared for the steel industry primarily for use with methods involving

sample solutions in checking chemical methods of analysis both for production control and for

customer acceptance. These SRM's consist of nominal composition steel alloys selected to provide a wide range of analytical values for the various elements that are of vital concern to the chemist.

They are furnished in chips, usually sized between 16- and 40-mesh sieves, prepared from selected

portions of commercial ingots.

The Certificate of Analysis, provided with each SRM, gives the chemical composition determined

at NBS. Most certificates also include values obtained by other laboratories that cooperated in the

certification of the SRM's.

Plain Carbon Steels ( 1 50 gram units unless Otherwise noted) Chemical Composition (Nominal Weight Percent)

SRM Type Mn Grav Comb Si

0.077 0.058

.109 .020

.026 .211 .027 .235 .030 .35 5 .039 .177

.026 .095 .029 .20 .033 .186

.028 .305

.014 .246 .010 .370

.030 .202

.014 .163

8j 10g llh 12h

13g 14e

15g

16e

19g

20g

51b

65d

152a 178 335 337

Bessemer (Simulated), 0.1C .

Bessemer, 0.2C BOH.0.2C

BOH,0.4C

BOH,0.6C

BOH.0.8C

BOH,0.1C

BOH, 1.1C AOH,0.2C

AISI 1045

Electric Furnace 1.2C

Basic Electric 0.3C BOH,0.5C(Tin bearing)

Basic oxygen 0.4C BOH 0.1C (Carbon only) 300g

BOH 1.1C (Carbon only) 300g

0.081 .240

.200

.407

.61 .753

.097

1.09 0.223

.462

1.21 0.264

.486

.395

.092

1.07

0.505

.850 .510

.842

.85 .404

.485

.381 .554

.665

.573 .730

.717

.824

0.095

.086

.010

.018

.006 .008

.005

.021 .046

.012

.013

.015 .012 .012

0.109

.032

.014 .010

LOW Alloy Steels ( 1 50 gram units unless Otherwise noted) Chemical Composition (Nominal Weight Percent)

SRM Type

(Other

Forms) Mn

Grav. Comb.

Si Cu Ni

0.28 0.76 0.071

.278 .127 1.19 .253 .123 3.58

.258 .179 0.203

.256 .062 .055 .210 .064 .030

.274 .117 .217 2.89 .071 0.038

0.241 .096 .510

.322 .083 .100

.222 .042 2.00

.39 .50 0.59

.74 .10 .30

.06 5 .24, • 144

30f 32e 33d

36b

72f 100b

105 106b

125b

139a

155 361 362

363 364

366

Cr-V(SAE6150)

Ni-Cr (SAE 3140)

Ni-Mo (SAE 4820)

Cr2-Mol

Cr-Mo (SAE X4130)

Manganese (SAE Tl 344)

High-Sulfur 0.2C (Carbon only) Cr-Mo-Al (Nitralloy G)

High-Silicon

Cr-Ni-Mo (AISI 8640)

Cr0.5-W0.5 AISI 4340

AISI94B17 (Mod)

Cr-V(Mod)

High Carbon (Mod)

1134

661,1095,1261

662,1096,1262

663,1097,1263

664,1098,1264

0.49

.409

.173 .114

.301 .397

.193 .326 .028

.404

.905 .383 .160

.62

.87

0.79

.798

.537

.404

.545

1.89

0.506

.278

.780

1.24 0.66

1.04 1.50

0.25*

0.010

.008

.006

.007 .014

.023

.008

.029

.013 .015 .014

.014

.029

•01,

0.022

.010

.024

.029

.016

.019 .010

0.010

.021

.011 .019

.024 .028

(.60) .017

.008

.019

.011 .017

.038 .009

.02 o Set: 1 each of 361,362,363,364, and 365, Electrolytic Iron. (SRM 365 is described on page 28.)

SRM B Pb Sb Bi Ag Se Te Ce La Nd

361 362

363

364

(0.0005)

(.0025)

(.0010)

(.014)

(<0.0001)

(.0006) (.0018)

.01,

0.004,

.013

(.0022)

(.025)

(0.0005)

(.006) (.0006)

(.002)

(0.0004)

(.0009) (.0032) (.00005)

(0.004)

(.001) (.0001)

(.0003)

(0.0005)

(.001) (.0023)

(.0002)

(0.005)

(.002) (.002) (.0005)

(0.001)

(.0005) (.0012) (.00007)

(0.001) (.0005)

(.0002)

1 6
Plain Carbon Steels (Continued)

Cu Ni Cr V Mo Co Ti Sn Al

(total) N Other SRM

0.020

.008 0.113.005 0.097.008 0.015

.007 0.038

.002

8j 10g llh

12h

13g

14e

15g

16e 19g

20g

51b

65d

152a 178

335

337

0.015

.073 .032 .074 .003 .006 (0.038) .006

.072 .053 .071' .002 .013 .060

.093 .034

.071

.051 .023 .032

.066

.034 .053 .060

.056 .010

.374

.036

.455

.049 .046

.016

.012 .002

.002

.002

.001 .001

.013

.008

.014

.025 .036 .003

0.012 0.027 0.008

.008

.004 .032

.031 .040 Nb 0.026

.011 .059 .013 A12 03 0.009

Low Alloy Steels (Continued)

Cr V Mo W Co Ti As Sn Al

Total Nb Ta Zr N SRM

0.95 .678

.143 2.18 0.891

0.18

.002

.002

.004

.005

0.023

.246

.996

.184

(0.011) 0.009

(.011)

.009

3 Of 32e 33d

36b

72f

.063 .003 .237 .004 100b

105 106b

125b

139a

1.18 0.019

.486

.003 , .199

.008

.183

.003

1.07 0.329

.003 .008

.485

.69

.30 1.31 0.06 3

.014

.011 .040

.31 .10 5

.039

.19 .068

.028

.49

0.517

(.011)

(.20) (.047)

(.10)

0.030

.30

.04, .15

0.02 0 (.084)

(.06)

(.24)

0.01,

(.079)

(.011)

(.057)

.01. (.016)

(.094)

(.005)

(.086^

(.25) (.014)

0.02 2 (.28) (.049)

(.157)

(0.021)

(.20)

(.04) (.11)

0.01,

(.21) (.048)

(.070)

(.0037)

(.0040)

(.0042)

(.003)

155 361 362

363 364

Ca Mg Zn Pr Ge o H Au Hf SRM

(0.0001)

(.0003) «.0001)

(.00005)

(0.0002)

(.0007)

(.0005) (.00005)

(0.0005)

(.001) (.0004)

(.0005)

(0.0005)

(.0003)

(.0005)

(.0001)

(0.006)

(.002)

(.010)

(.003)

(0.001)

(.001) (.0006) (.0017)

(<0.0005)

(<.0005)

(<.0005)

(<.0005)

(<0.00005)

«.00006)

(.0006) (.00007)

(0.0002)

(.0040)

(.0042)

(.005)

361 362

363 364

1 7
High Alloy Steels ( 1 50 gram units unless Otherwise noted) Chemical Composition (Nominal Weight Percent) SRM Type C Mn P £

Grav Comb

Si Cu

126c 131b

344

345 346

348

High-Nickel Steel (36% Ni)

Low Carbon-Silicon (Carbon only) 100 grams Crl5-Ni7-Mo2-All

Crl6-Ni4Cu3

Cr22-Ni4-Mn9

Ni26-Crl5 (A286)

5 0.026_

.0018

!69 .048

.541 .044

0.47

.57 .224

9.15

1.48

0.004

.018 .018

.018

.015

0.012

0.006

.019 .012

.063 .002

0.19

.395 .610

.239

.54

0.040

.106

3.44

0.22

Stainless Steels ( 1 50 gram units unless otherwise noted) Chemical Composition (Nominal Weight Percent) SRM

73c 121d

123c 133a 160b

166c 339

343

Type (Other Forms)

Crl3 (SAE 420)

Crl7-Nill-Ti0.3 (AISI 321) .

.

Crl7-Nill-Nb0.6 (AISI 348) . Crl3-Mo0.3-S0.3 Crl9-Nil4-Mo3

Low Carbon (AISI 3162) Carbon Only

Crl7-Ni9-Se0.2 (SAE 303Se) . Crl6-Ni2(SAE431)

1171 1172

0.310

.067

.056 .120

.046 .0078

.052 .150

Mn P

Grav

S Comb

Si Cu

0.330

1.80 L7

S 1.03 1.64

0.018

.019

.024

.026 .020

0.036

.013 .014 .330

.018

0.181

.54

.59 .412

.50,

0.080

.121

.103 .118 .172 0.326

0.738 .129 .013 .654 .199

Tool Steels ( 1 50 gram units unless otherwise noted) Chemical Composition (Nominal Weight Percent) SRM Type C Mn P

< Grav Comb

Si Cu

50c 132b

134a

153a

W18-Cr4-Vl Mo-W-Cr-V

Mo8-W2-Cr4-Vl

Co8-Mo9-W2-Cr4-V2

0.719

.865 .808 .902

0.342

.340 .218

.192

0.022

•oi3

.18 .023

0.010

.007 .007

0.009

.005

.007 .007

0.311

.18 .323 .270

0.079 .08/

.101 .094

Steels (Granular Form — 100 gram units)

These granular-form SRM's are prepared by a pre-alloyed powder metallurgical process, which

generally includes argon atomization and hydrogen annealing. The material normally is sized between 25 and 200 mesh sieves to ensure satisfactory homogeneity.

The Certificate of Analysis, provided with each of these SRM's gives the chemical composition as determined at NBS and values obtained by other laboratories that cooperated in the certification of

the SRM's.

Chemical Composition (Nominal Weight Percent) SRM

Type

Wt/Unit

(grams) c Mn P s Si Cu Ni

163

lOlf Low Alloy, 1.0 Cr

Stainless, (AISI 304L)

100

100

0.933

.014 0.897

.087 0.007 .008

0.027

.008 0.488.876 0.087

.030 0.0819.96

SRM Cr V Mo W Co N As Sb Ga

163 lOlf

0.982

18.49 0.029

.007 0.007 0.034 (0.0002) 0.088 (0.003) (0.0009) (0.004)

1 8
High Alloy Steels (Continued)

Ni Cr V Mo Co Ti Al

Total) Nb Ta B Fe SRM

36 .05 0.064 0.001 0.011 0.008 .... 126c 131b

344

345 346 348

7.28 4.24

3.94

25.8

14.95

16.04

21.61 14.54

0.040

.041

.058

.25

2.40 0.122

0.076 1.16 0.002

.089 0.231 N .441

1.3 2.24 0.23 0.0031 53.3

Stainless SteelsV Continued)

Ni Cr v

0.246 12.82

11.17 17.4, 11.3 4 17.4 0 0.241 12.89

12.2, 18.4 5

8.89 17.42

2.14 15.76

Mo Co Ti Nb Ta Pb Se N SRM

0.091

.165

.22 .294 2.38

0.037 73c 121d

123c 133a 160b

0.10

.12 0.342

0.65 <0.001

.032

.10, 0.001 .03, 166c 339

343

0.248 .096 0.247

.074

0.030

.026

.047

.058

.036 Tool Steels (Continued)

Ni Cr V

0.069 4.13 1.16

.23 4.38 1.84 .088 3.67 1.25 .168 3.72 2.06

Mo W Co Sn As N SRM

0.082 49

3 8.35 8.85

18.44

6.2„ 2.00

1.76

6.028 0.018 0.022 0.012 50c 132b

134a

8.47 /.024 153a
Steels (Solid Form)

Several groups of SRM's have been prepared to meet the basic needs of the steel industry for

analytical control primarily by optical emission and x-ray spectroscopic methods of analysis. Both

nominal composition and analytical range SRM's are provided for ingot iron, low-alloy steel, stainless steel, tool steel, and specialty steel. These SRM's are furnished in various forms. The 400 series is intended for optical emission

spectroscopic methods of analysis utilizing the "point-to-point" technique. The 600 series is in- tended for microchemical methods of analysis such as electron probe microanalysis, spark source mass spectrometric analysis, and laser probe analysis. The 800, 1 100, and 1200 series are intended

for "point-to-plane" optical emission spectroscopic methods of analysis. The D800 series, and the

1 1 00 and 1 200 series also are intended for x-ray spectroscopic methods of analysis.

Because of the special homogeneity requirements, most of these materials have been prepared by

using the most modern techniques of melting, casting, fabrication, and heat treatment to ensure adequate uniformity of composition. A Certificate of Analysis, which gives the chemical composition as determined at the NBS, is furnished for each SRM; many certificates also include values

obtained by outside laboratories which cooperated in the certification of the SRM's. (Values in

parentheses are not certified as they are based on the results from a single laboratory. Values in

brackets are not certified but are nominal values obtained from heat analyses. These values are given

for additional information on the chemical composition.)

20
Ingot Iron and Low-Alloy Steels

The preparation of these original spectroscopic SRM's began in about 1944 when the cores remaining after lathe cutting the materials for chip form standards were tested for homogeneity.

Those found satisfactory were fabricated to the final shapes and sizes. To meet the urgent need in the mid-1950's for calibration standards for x-ray spectroscopic methods of analysis, portions of the

material from five of these SRM's were converted to the applicable disk form. Although entirely

satisfactory for conventional spectroscopic methods of analysis, these SRM's generally do not meet

the stringent requirements for homogeneity necessary for use with the newer microchemical

methods of analysis. These standards will be discontinued when the supply is exhausted.

rnu oKm Chemical Composition

(Nominal Weight Percent) Ha in ux 1 /I :n n V 1 1 Id in n x 4 in Long 2 in Long l/'t Ul JL/1SK Tvne Si Cu Ni Cr

803a D803a Acid Open Hearth, 0.6C 1.04 0.34 0.096 0.190 0.101 404a 804a 0.88 .44 .050 .040 .025 405a 805a D805a 1.90 .27 .032 .065 .037 407a 807a D807a 0.76 .29 .132 .169 .92 408a 808a .76 .28 .10 1.20 .655 409b 809b D809b .46 .27 .104 3.29 .072 810a Cr2-Mol .36 .11 0.24 2.39 413 Acid Open Hearth, 0.4C .67 .22 .25 .18 0.055 414 Cr-Mo (SAE 4140) .67 .26 .11 .080 .99 417a 817a Basic Open Hearth, 0.4C .78 .13 .062 .050 418 Cr-Mo (SAE X4130) .52 .28 .11 .96 418a Cr-Mo (SAE X4130) .52 .27 .040 .125 1.02 420a 820a D820a .017 .027 .0092 0.0032 821 Cr-W, 0.9C 1.24 .080 .10 .49 427 827 Cr-Mo (SAE 4150) (B only)

SRM Chemical Composition (Nominal Weight Percent)

7/32 in D x 4 in Long

1/2 in D x 22 in Long

1 l/4inDx

1/4 in Disk V Mo W Co Sn

Al

Total B

803a

804a

805a

807a 808a

D803a 0.005

.002 0.033

.007 .005 404a

405a

407a 408a

D805a

D807a

0.056

.146

.002 .065 409a 809a 810a D809a .002 .009

.91 .006

.32 .013

0.025 0.012

413

414 417a

.007

.003 .014 .036

.020 817a 418

418a

420a

.22

.21 .0013

.040 820a

821

827

D820a .006 .0017 .003 .012 0.52 427 0.0027

21
Special Ingot Irons and Low-Alloy Steels

The planning of the 1100 series SRM's began in late 1952 to meet critical requirements of

calibration in the iron and steel industry. Steel for these SRM's was prepared by the most modern

melting, casting, and fabrication techniques to provide large quantities of material of the highest

possible homogeneity. The materials were fully characterized and included investigations by means

of electron probe microanalysis and quantitative metallographic techniques. It was concluded that,

for example, SRM's 461 and 463 are sufficiently homogeneous that any present microanalytical

technique can be carried out with little chance of inaccuracy caused by inhomogeneity. Details of

the metallographic and homogeneity characterization are given in NBS Miscellaneous Publication

260-3 and 260-10, respectively (see inside back cover for ordering instructions).

These SRM's were first issued in 1957 and they have been in great demand ever since. Several

years ago it became apparent that supplies of some of the 1100 series would be exhausted. To

remedy this situation, the new 1200 series (SRM's 1261-1265) was prepared.

The 1200 Series consists of four low alloy steels and an electrolytic iron containing a graded

series of 40 elements. Material from the same melts are available in three other forms: chip form,

361-365, for chemical methods of analysis, (pagesl6 and.28); rods, 661-665, 3.2 mm (1/8 in) in

diameter and 51 mm (2 in) long for microchemical methods of analysis such as electron probe

microanalysis, spark source mass spectrometric analysis, and laser probe analysis (see below); and

rods (1095-1099), 6.4 mm (1/4 in) in diameter and 102 mm (4 in) long for determining gases in

metals by vacuum fusion and neutron activation methods of analysis (page 27).

SPECIAL INGOT IRONS AND LOW ALLOY STEELS

Sizes: 400 Series - 7/32 in D X 4 in long

600 Series - 3.2 mm D X 51 mm long

1100 Series - 1 1/4 in D X 3/4 in thick 1200 Series - 31 mm D X 19 mm thick

Chemical Composition (Nominal Weight Percent)

Sets : 666 Set of 2: 661 and 665

667 Set of 2: 662 and 663

668 Set of 5: 661 , 662, 663, 664, and 665

1266 Set of 5: 1261, 1262, 1263, 1264, and 1265

SRM

461

462

463

464

465

466

467

468

661 662

663

664

665

1134

1135

1165 1166 1167

1261 1262

1263

1264

1265

Type

High Silicon High Silicon Low Alloy A

Low Alloy B Low Alloy C

Low Alloy D

Ingot Iron E

Ingot Iron F

Low Alloy G

Low Alloy H

AISI 4340

AISI 94B17 (Mod)

Cr-V (Mod)

High Carbon (Mod)

Electrolytic Iron .

.

(Other

Forms) C Mn P

125b 0.026 0.277 0.028

(179) .027 .094 .006

.15 .36 .053

.40 .94 .045

.19 1.15 .031

.54 1.32 .017

.037 0.032 .008

.065 •H 3 .012

.11 .27 5 .033

.26 .47 .023 361,1095 .38, .66 .015 362,1096 • 16 0 1.04 .042 363,1097 .62 1.50 .02, 364,(1098) • 87 0 0.25, .01 365,1099 .0067 .0057 .002

0.009

.026

(.02)

(.02) (.02)

(.02)

(.01) (.01)

(.01) (.02) .017 .038

.008

.028 .0059

Si

2.89 3.19 0.047

.28

.41 .48 .029

.025

.26 .075

.223

.39

.74 .067

.008„

Cu

0.070

.056

.34 .20

.47 .094

.019

.033 .067

.26 .042

.50

•09 e .24 .0058

Ni

0.038

.050

1.73 0.70

.39

.13 .026

.051 .088

1.03

1.99 0.59

.32

.14 .041

Cr

SRM B Pb Ag Ge O N

1134

1135 461

462

463

0.000 2 .000 5 .0012

(0.003) .006 .012

(0.001 5 (<.0002)

(<.0002)

(0.001 5 ) (•003 0 ) (.002 5 )

(0.02.)

(.006)

(.007)

(0.006 ) (.008 ) C006 ) 464

465 1165 466 1166 467 1167 468

.005

.000, (.000 2 ) (.000 2 ) .009

.020 (<.0005)

(.001,) .ood (<.0005)

(.003,) (.0002 5 ) (.0004 s ) (.004.) (<.0005)

COM,)

(.003 s ) (.003 0 ) (.003 0 ) G001 0 )

(.006) (.003)

(.005)

(.004) (.004)

(.00,

)

C00 5 ) (.006 ) (•004 ) (.006 ) 661 1261 662 1262

663 1263 664 1264 665 1265

.0005 .0025

.0009,

.011 .00013

.00002 5 .0004, .0022

.024 .00001 s

.0004

(.0010)

(.0038) (.00002)

Cv.000002)

[.006]

[.002]

[.010]

[.003] Cv.0014)

(.0009)t

(.001 l)t G007)t

[.0017]f

Cv.0063)t

(.0037)t

(.004 l)t (.004 l)f [.003] f Cv.OOlDt

0.019

.022

.13

.74

.26 .078

.004

.011 .036

.54

.69 .30

1.31 0.06 s .007,

H

[<0.0005]t

[<.0005]f

[<.0005]f

[<.0005]f

CvOOODt

22
SRM Sb Bi Ca Mg Se Te

661 1261 0.004, 0.0004 (<0.0001) (0.0001) 0.004 0.0006 662 1262 .012 (.002) (.0002) (.0006) [.001] (.0005) 663 1263 •001 6 (.0008) (<.0001) (.0005) [.0001] (.0022) 664 1264 (.035) (.0009) (<.0001) (.0001) [.0003] [.0002] 665 1265 -(<.00005) -(<.00001) -(<.00001) -(<.00002) -«.00001) -(<.00001)

SRM • Zn Au Ce Hf La Nd Pr Fe

661 1261 662 1262 663 1263 664 1264 665 1265

(0.0001)

0.0005)

(.0004)

.001 K.0001)

(<.0.00005)

(<.00005)

.0005

-.0001 -(<.000002)

0.001 3 (.0011)

(.0016) (.00025)

-(<.000005)

[0.0002]

[.006] [.0015]

[.005] -(<.00002)

0.0004

.0004

.0006 .00007 -(<.000005)

0.0003

(.0005)

1 (.0007) (.00012)

-(<.000005)

(0.00014)

(.00012)

(.00018)

(.00003)

-(<.000005)

(95.6)

(95.3)

(94.4) (96.7)

(99.9)

(Continued)

V Mo W Co Ti As Sn Al

Total Nb Ta Zr

0.008

.014

.30 .080

.12 .029

.005 .011

.021 .20

.19

.06

.

.030

.49 .0050

0.605

.004

.022 .066

.013

.043 .001

.005

.10 .009

.01, .016

(.095)

[.005] CV0002)

0.329 .0028

.005

.02 3 .02 7 .005

.19

.01 s .16

.04 2 .02, .09 5 .24 (.008) (.0007)

1134

1135 461 462

463

464

465 1165 466 1166 467 1167 468

661 1261 662 1262 663 1263 664 1264 665 1265

<0.01

.024

.058

.10

2.002h

.007

.041

.17 .011

.04,

.31 .10. .0006

0.012

.053

.10s .022

(.001) (.006) .20 .077

.01 5 .21 .04 s .10 Cv.00004)

0.26

.11 .01,

.02 .008

•04 6 .07 4 .16 .030

.30 .048

.15 •007 o

(0.01) .037 .010

.004

.20 .057

.26 .011 .020

.084 .050

.24 .0006

0.028

.046

.10 .018

.010

.014

.14 .008

.017

.09 .010

.05, (.0002)

0.011

.096

.19 5 .037

(.001) .005

.29 .006 .022

.29 .049 «.o6oob

0.002

.036

.15 .069

.001 .002

.23 .005 .020

.20 (.053)

.11 -(<.00005)

(<0.005)

.063

.20 .010

(.002) (<.005)

.094 (<.005)

.009

.19 .049 .068 -(<.00001)

NOTE: Values in parentheses not certified, based on a single analytical method.

Values in brackets not certified, approximate values from the heat analyses. fFrom Gasometric Certificates: SRM's 1095 through 1099. -Not detected, value given is conservative "Upper Limit" of detection by specific methods of analysis.

23
I

Stainless Steels

Three groups of stainless steel SRM's designed primarily for calibration in spectroscopic methods

of analysis are available.

Group I, SRM 442 through 444, consists of three SRM's of the 18 Cr- 8 Ni type stainless steel available only in rod form for use with the "point-to-point" technique in emission spectroscopy.

Group II is comprised of six standards, each available in three different physical forms; the 400,

the 800, and the D800 series. Both Group I and Group II standards have been extensively tested for homogeneity and found

satisfactory for application in conventional spectroscopic methods of analysis. Neither group, however, has been tested for microanalytical methods and their use in these applications is not recom- mended.

Group III consists of six stainless steels available only in disk form and two in both chip and disk

form for the "point-to-plane" technique of emission spectroscopy and for x-ray spectroscopy. They

were prepared by melting, casting, and fabrication techniques known to produce material of high

homogeneity.

(Values in parentheses are not certified, but are given for additional information only).

GROUP I

SRM Chemical Composition (Nominal Weight Percent)

7/32 in Dx

4 in Long Name Mn Si Cu Ni Cr V Mo W Co

442 Crl6-Nil0 2.88 (0.09) 0.11 9.9 16.1 0.032 0.12 (0.08) 0.13 443 Crl8.5-Ni9.5 3.38 (.15) .14 9.4 18.5 .064 .12 (.09) .12 444 Cr20.5-NilO 4.62 (.65) .24 10.1 20.5 .12 .23 (.17) .22

GROUP II SRM Chemical Composition

(Nominal Weight Percent) 7/32 in D x 1/2 in D x 1 1/4 in D x 4 in Long 2 in Long 1/4 in Disks Name Mn Si Cu Ni Cr V

445 845 D845 Crl 3-Mo0.9 (Mod. AISI 410) 0.77 0.52 0.065 0.28 13.31 (0.05) 446 846 D846 Crl8-Ni9 (Mod. AISI 321) .53 1.19 .19 9.11 18.35 (.03) 447 847 D847 Cr24-Nil3 (Mod. AISI 309) .23 0.37 .19 13.26 23.72 (.03) 448 D848 Cr9-Mo0.3 (Mod. AISI 403) 2.13 1.25 .16 .52 9.09 (.02) 449 849 D849 Cr5.5-Ni6.5 1.63 0.68 .21 6.62 5.48 (.01) 450 850 D850 .12 .36 24.8 2.99 (.006)

GROUP III Chemical Composition (Nominal Weight Percent)

(Other

SRM Type Forms) C Mn P S Si Cu Ni Cr

1152 Crl8-Nil0 0.163 1.19 0.017 0.017 0.654 0.497 10.21 18.49 1154 Crl9-Nil0 .094 1.74 .038 .033 1.09 .560 10.25 19.58 1155 Crl 8-Nil2-Mo2 (AISI 316) .046 1.63 .020 .018 0.50 .169 12.18 18.45 1185 Crl7-Nil3-Mo2 (AISI 316) .11 1.22 .019 .016 .40 .067 13.18 17.09 1171 Crl7-Nill-Ti0.3 121d .067 1.8 0 .018 .01 3 .54 .121 11.2 17.4 1172 Crl7-Nill-Nb0.6 123c .056 1-7. .025 •01 4 .59 .10s 11.3, 17.40

24
GROUP I (Continued)

Chemical Composition (Nominal Weight Percent)

Ti Sn Nb Ta B Pb Zi Zn 4 in Long

0.002 0.0035 0.032 (0.0006) 0.0005 0.0017 (0.004) (.003) 442

.003 .006 .056 (.0008) .0012 .0025 (.005) 443

.019 .014 .20 (.004) .0033 .0037 (.011) (.004) 444

SRM

7/32 in D x

GROUP II (Continued)

Chemical Composition

Mo W Ti Sn Nb Ta

7/32 in D x 4 in Long1/2 in D * 2 in Long

1 1/4 in Dx

1/4 in Disks

0.92 (0.42) (0.03) 0.11 (0.002) 445 845 D845

.43 (.04) (.34) (0.02) .60 (.030) 446 846 D846

.059 (.06) (.02) .03 (.002) 447 847 D847

.33 (.14) (.23) (.05) .49 (.026) 448 D848

.15 (.19) (.11) (.07) .31 (.021) 449 849 D849

(.21) (.05) (.09) .05 (.002) 450 850 D850

SRM

GROUP III (Continued)

V Mo Co Ti As Sn Al Nb Ta B Pb Zr SRM

0.044

.061 .047

0.366

.463 2.38

2.01

0.16,

.22

(0.095)

(.12) .101

(0.12)

(.48)

(0.01)

(.03)

(0.004)

(.023)

(0.003)

(.035)

(0.20)

(.26)

(0.085)

(.045)

(0.005)

(.0006)

(0.001)

(.012) .001

(0.03)

(.022) 1152

1154

1155 1185

1171 1172

<.001

.34 <.001 <.001

.10

.12 0.65 <.001

25
Tool Steels

A group of six high-speed tool steel SRM's is available in three different physical forms. A wide

concentration range is covered by combining the concentration ranges of three American Iron and

Steel Institute (AISI) designations with three other tool steels of tailored composition.

SRM Chemical Compositions (Nominal Weight Percent)

7/32 in Dx 1/2 in Dx 1 1/4 in Dx

4 in Long 2 in Long 1/4 in Disk Type Mn Si Cu Cr V Mo W Co

436 D836 Special (Cr6-Mo3-W 10) 0.21 0.32 0.075 6.02 0.63 2.80 9.7 437 837 D837 Special (Cr8-Mo2-W3-Co3) .48 .53 7.79 3.04 1.50 2.8 2.9 438 838 D838 Mo High Speed (AISI-SAE-M30) .20 .17 .17 4.66 1.17 8.26 1.7 4.9 439 839 D839 Mo High Speed (AISI-SAE-M36) .18 .21 .12 2.72 1.50 4.61 5.7 7.8 440 840 D840 Special W High Speed (Cr2-W13-Col 12) ... .15 .14 .059 2.12 2.11 0.070 13.0 11.8 441 841 D841 W High Speed (AISI-SAE-TI) .27 .16 .072 4.20 1.13 .84 18.5

Maraging Steel

This alloy derives its name from the formation of martensite on age hardening. They attain

remarkable metallurgical properties by a simple heat treatment. Extensive use of these alloys is expected, particularly in submarines, missiles, and aircraft. This Maraging Steel, SRM No. 1 156, of

the 19 percent nickel type, is designed primarily for calibration in optical emission and x-ray

spectroscopic methods of analysis.

SRM

1 l/4inDx

3/4 in Disk Type C

Chemical Compositions (Nominal Weigh

Mn PIS

t Percent)

Si Cu

1156 Maraging,

Ni

(Ni 19) ...

Cr M

0.

o

023

Co

0.21

Ti

0.011 1

AI

0.012

Zr

0.184

B

0.025

Ca

1156 19.0 0.20 3.1 7.3 0.21 0.047 0.004 0.003 <0.001

High-Temperature Alloys (Solid Form)

High-temperature alloy SRM's were prepared to meet the critical needs of industry, particularly

the aerospace industry, and government agencies. These SRM's are useful in instrument calibration,

primarily for x-ray and optical emission spectroscopic methods of analysis.

Chemical Composition (Nominal Weight Percent) SRM Type C Mn P S Si Cu

1206-2 Rene-41 0.21 7 0.030 (0.004) 0.006 0.21 6 0.040

1207-1 Waspaloy(l) .... .043 .34 .005 .009 .47, .026 1207-2 Waspaloy(2) .... .083 •29, .005 .009 .61, .033 1208-1 Inco 718(1) .046 .38, .003 .01, .43 4 .14, 1208-2 Inco 718(2) .022 •23 0 .003 .007 .08, .077

1209 Set, 1 each: 1206-2, 1207-1, 1207-2, 1208-1, and 1208-2

SRM Ni Cr Mo Co Ti AI Nb Ta Fe

1206-2 1207- 1 1207-2 1208- 1 1208-2

53.3

56.1 55.7 51.9

51.5

19.7 18.88

19.4 4 17.5 17.4

10.3 4.50 4.34

3.2 3.13

11.5,

13.0, 13.5 0.82

0.76

2.9 3.0$

2.54 0.46

(0.8,)

l-74 1.26

1.3 (0.15)

(0.8,)

5.3. 4.9! (0.012)

(0.012)

0.46

2.22

2.09

19.2

19.8

26
Oxygen Standards

These SRM's are issued for the determination of oxygen and nitrogen by vacuum fusion, inert gas

fusion, and neutron activation methods. SRM's 1095-1099 were prepared from the same melt as the

1200 series (1261-1265), page22.

(Values in parentheses are not certified, but are given for information only.)

SRM Oxygen Nitrogen

Type Unit (ppm) (ppm)

1090 Ingot iron Rods 1/4 in D X 4 in Long A O 1 (oil) 1091 Stainless Steel (AISI 431) ... . Rods 5/16 in D X 4 in Long 131 (945) 1092 Rods 1/4 in D X 4 in Long 28 (4) 1093 Valve steel Rods 1/4 in D X 4 in Long 60 (4807) 1094 Rods 1/4 in D X4 in Long 4.5 (71) 1095 AISI 4340 Steel Rods 6.4 mm in D X 102 mm Long 9 (37) 1096 AISI 94B17 (Mod) Steel Rods 6.4 mm in D X 102 mm Long 10.7 40.4 1097 Cr-V (Mod) Steel Rods 6.4 mm in D X 102 mm Long 6.6 (41) 1098 High Carbon (Mod) Steel .... Rods 6.4 mm in D X 102 mm Long (17) (30) 1099 Electrolytic Iron Rods 6.4 mm in D X 102 mm Long 61 (13) 1089 Set of 5: 1095, 1096, 1097, 1098, and 1099
Cast Irons (Chip Form — 150 gram units, unless otherwise noted)

This group of cast iron SRM's is similar to the chip-form steels and was prepared for use in

checking chemical methods in the cast iron industry. These SRM's are in the form of chips, usually

sized between 16- and 25-mesh sieves. They are prepared by lathe cutting of chips with a multipletooth cutting tool from thin-wall cylindrical castings especially made for the purpose. Supplied with

each SRM is a Certificate of Analysis listing the chemical composition determined at NBS and other

laboratories that cooperated in the certification of the SRM's. For SRM 365, Electrolytic Iron, the

Certificate provides information on these additional elements: W, Nb, Ag, Zn, Ge, O, H, Ta, Nd, Zr,

Sb, Bi, Ca, Mg, Se, Te, Ce, La, Pr, Au, Hf, and Fe. (Values in parentheses are not certified, but are given for information only.)

SRM

Type

Chemical Composition (Nominal Weight Percent)

C S Wt/Unit

(grams) Total Graphitic Mn P Grav. Comb. Si Cu

110 2.44 0.353 0.086 0.088 1.04 0.050 150 2.99 2.38 .79 .17 .062 1.31 .24 150 2.59 1.99 .68 .280 .123 1.83 1.01 150 2.84 2.00 1.06 .56 .123 1.06 0.50 150 2.69 2.59 0.612 .794 0.061 .060 2.41 .128 150 0.0112 .035 .003 .012 .011 0.001 .065 150 2.85 2.37 .745 .025 .007 2.10 .038 150 2.75 1.87 .510 .058 .067 .067 1.35 .235 150 2.62 1.96 1.00 .086 .064 .065 2.13 5.52 150 3.51 2.78 0.528 .349 .074 0.510 0.033 150 1.81 1.23 .92 .024 .007 .007 2.44 .152 150 2.45 2.14 .369 .020 .014 .014 2.85 .14 150 1.86 1.38 .275 .018 .006 2.73 .14 150 0.0070 .0057 .003 .006 0.0076 .00583b

4j5L

6g

7g 55e 82b

107b

115a

122e

341 342

342a 365

White

Cast

Cast

Cast

Cast (High Phosphorus)

Ingot Cast (Ni-Cr) Cast (Ni-Cr-Mo)

Cast (Cu-Ni-Cr) Cast (Car Wheel)

Ductile Nodular Nodular

Electrolytic Iron

Cast Steels, White Cast Irons, Ductile Irons and

Blast Furnace Irons (Solid Form)

These chill-cast SRM's were prepared for use in analytical control of cast steels and cast irons by

rapid instrumental methods. Although employed in x-ray spectroscopic analysis, they are particularly useful for calibrating vacuum optical emission spectrometers because they permit the determination of carbon, phosphorus, and sulfur in addition to the metallic elements.

These SRM's are chill-cast sections. Details of the preparation and intended use of the SRM's are given in the NBS Miscellaneous Publication 260-1. (See inside back cover for ordering instructions.)

(Values in parentheses are not certified, but are given for information only.)

SRM Chemical Composition (Nominal Weight Percent)

1 1/4 inx

1 1/4 inX

Type

C Mn P S Si Cu Ni Cr V Mo

1/2 in

1147 - White (4i) 3.60 0.78 .160 .059 1.31 0.23 0.070 0.093 .032 0.078 1148 White (5L) 2.89 .66 .300 (.11) 1.82 .99 .091 .146 .036 .022 1149 White (6g) 3.28 1.05 .564 .127 1.04 .49 .138 .363 .055 .036 1140 Ductile (No. 1) 3.18 0.725 .0070 .010 1.92 .10 .028 .030 .030 .090 1141 Ductile (No. 2) 3.64 .480 .072 .020 1.11 .21 .54 .145 .0090 .05 1142 Ductile (No. 3) 2.94 .18 .20 .015 3.33 1.02 1.65 .053 .006 .022 1138 Cast Steel (No. 1) 0.120 .43 .053 .053 0.34 0.09 0.10 .12 .020 .05 1139 Cast Steel (No. 2) .792 .98 .011 .013 .85 .40 .93 1.96 .24 .51 1143 Blast Furnace (No. 1) . .

.

3.91 .414 .158 .028 1.68 .144 .115 0.145 .008 (.005) 1144 Blast Furnace (No. 2) . . . 4.27 1.33 .112 .021 0.276 .090 .021 .019 .004 .007

28
(Continued)

Chemical Composition (Nominal Weight Percent)

Ni Cr V Mo

0.010

.068

.086 .136 .120

0.052

.09

.15 .37 .048

0.006

.03 .036

.06 .010

0.002

.080

.020

.035 .012

.038

1.22 2.12 14.49 0.080

.006 .333 .560

1.98 (0.038)

<001

.027 .008

.014

(.032)

.011 .002 .750

.050

(.001) 20.32

0.023

.06 .041

1.98 0.032

.034 .0072

.012

.005 .010

.009

.0006 .0050

Co Ti As 1 Sn

Al

(Total) Mg N

SRM

3b

4j5L

6g

7g 55e 82b

107b

115a

122e

341 342

342a

365

0.05

.05 .06 .044

0.03 <005

.04 .014

.007

0.006

.006

.004 0.007 0.007 0.002 .004

.027 .016 .020

(.026) .018

.019 .020 .0006

(.008)

(.018) (.009) 0.068

.053

.069 .0070 I .0002 (.0002) (.0007) N 0.001 Pb 0.00002

(Continued) Chemical Composition (Nominal Weight Percent)

Co Ti As Sb Sn Al Te Zr B Bi Ce Y Pb Mg

0.009

.11 0.011

.35 .049 .050

.062

.10 .013 .008

0.024

.19 .022

(.022) .036

(.07)

(.04) (.015)

0.17 .022

0.23

.025 (0.001)

(.03)

0.072

.009 .016

.015 .013

(0.02)

(.03)

0.040

.005 (0.008)

(.017)

(0.01) .006

(.01) (.005)

(.09)

(0.09)

(.05) (.015)

K0.002)

.040

.01

0.019

.044

.10

.17 .44

(.004)

(.004)

.020 .020 1

SRM

1 1/4 in x

1 1/4 in X

1/2 in

1174a 1175a

1147 1148

1149 1140

1141 1142 1138

1139

1143

1144 29
Steelmaking Alloys

These SRM's provide standards of known chemical composition primarily for checking chemical

methods of analysis for the major constituents and for selected minor elements covered by ASTM

specifications. They are furnished as fine powders, sized to about 100 mesh or finer. These SRM's are finding increasing application in x-ray and optical emission spectroscopic

methods of analysis when procedures are used in which the samples to be analyzed are in the same

form or can be converted to the same form; that is, to pellets, solutions, or powders.

SRM Type

57 Refined Silicon 58a Ferrosilicon (75%)

59a Fenosilicon (50%)

195 Ferrosilicon (75%)

64b Ferrochromium (HC) . . . . 196 Ferrochromium(LC)

71 Calcium Molybdate

90 Ferrophosphorus 340

Wt/Unit

(grams) C Mn P

60

IN PREP

50

IN PREP

100

0.087

.04

4.30

0.034

.76

.208

0.008

.016

.012 100 60

75 100

0.035 .28

26.2 .060 1.71 .035

Si Cu Ni

96.80 0.02 0.002

48.2 .05 .03

1.42

.38

4.39

0.005

.062

SRM Cr

57 0.025 58a 59a .08 19564b 68.03 196 70.87 7190

340

Mo Ti Ai Nb Zr Ca Mg Fe

0.15

.12 35.3

0.10

.06

.89

0.67

.35

0.025

57.51 Ta 3.73

0.73

.04

0.01 0.65

50.0

1.92

0.06

0.033

30
Nonferrous Alloys (Chip Form)

These SRM's provide materials of known composition for checking the performance of chemical

methods of analysis both for production control and for customer acceptance. The aluminum-,

magnesium-, and zinc-base alloys are furnished as approximately 14- to 40-mesh chips prepared by

cutting thin wall castings or wrought bar stock. Certificates of Analysis provided with these standards give the composition as determined at NBS, and most give values obtained by industrial and

other outside laboratories cooperating in certification of the standards.

Aluminum-Base Alloys

Chemical Composition (Nominal Weight Percent) SRM

Type

Wt/Unit

(grams) Mn Si Cu Ni Cr V Ti Sn Ga Fe Pb Mg Zn

85b

86c 87a

Wrought ....

Casting 7575

75

0.61

.041

.26

0.18

.68 6.24

3.99 7.92 0.30

0.084

.030

.57

0.211

.029

.11

0.006 0.022

.035

.18 0.05

0.019

.02

0.24

.90 .6t

0.021

.031

.10

1.49 0.002

.37

0.030

1.50

Al-Si <01 0.16

Cobalt-Base Alloys

Chemical Composition (Nominal Weight Percent) SRM

Type

Wt/Unit

(grams) Co Ni Cr Mo w Nb

168 Co41-Mo4-Nb3-Tal-W4 150 41.20 20.25 20.33 3.95 3.95 2.95 SRM Si Cu Ti

168 0.95 3.43 1.50 0.37 0.008 0.005 0.80 0.035 0.03 0.06

Copper-Base Alloys

SRM Wt/Unit

Type (grams)

37e Brass, Sheet 150 124d Bronze, Ounce Metal .

.

150

157a Nickel Silver 135 158a 150

184 Bronze, Leaded Tin . . . 150

Mn

Chemical Composition (Nominal Weight Percent)

Si Cu Ni

69.61 0.53 83.60 .99 58.61 11.82 90.93 0.001 88.96 .50 SRM

37e

124e 157a 158a 184

Co

0.022

As

0.02

0.174

1.11

.02 .009

.026

.009

.093

3.03

Sn Fe Al Pb Sb Ag Zn

1.00 0.004 1.00 27.85 4.56 .18 5.20 0.17 0.02 5.06 0.021 .174 0.034 29.09

.96 1.23 0.46 .097 2.08 6.38 0.005 1.44 2.69

31
Lead-Base Alloys

SRM Type

(Other

Forms) Cu Ni As

Chemical Composition (Nominal Weight Percent)

Sn Sb Bi Ag Fe

53e Bearing Metal (84Pb-10Sb-6Sn)

127b Solder (40Sn-60Pb) 1132

1131

0.054

.011 0.003.012 0.057

.01

5.84

39.3 10.260.43 0.052

.06 <0.0010.01

Magnesium-Base Alloys

Chemical Composition (Nominal Weight Percent) SRM

Type

Wt/Unk

(grams) Mn Si Cu Ni Al Pb Fe Zn

171 Alloy 100 0.45 0.0118 0.0112 0.0009 2.98 0.0033 0.0018 1.05

Nickel-Base Alloys

Chemical Composition (Nominal Weight Percent) SRM

Type

Wt/Unit

(grams) C Mn P S Si Cu Ni Cr

162a 349

Monel-type (Ni64-Cu31) ... Ni57-Cr20150

150

0.079

.08

1.60 0.43 0.0020.007 0.93

.29

30.61 0.006

63.95

57.15

0.042

19.50 SRM

V Mo W Co Ti AI B Ca Fe Nb Ta Zr

162a 349

0.076

13.95 0.0053.05 0.501.23 0.013 2.19 0.081 4.04 <0.01 0.0046 0.13 <0.01 <30.01 0.081

Nickel Oxide

The nickel oxide SRM's are available primarily for application in the electronics industry to the

analysis of cathode grade nickel. The "Standard Method for Spectrochemical Analysis of Thermionic Nickel Alloys by the Powder-D-C Arc Technique," ASTM Designation El 29 is based on

calibration with these standards. The values given are for the percentage of the element in nickel

oxide.

Chemical Composition (Nominal Weight Percent) SRM

Type

Wt/Unit

(grams) Mn Si Cu Cr Co Ti Al Fe Mg

671 Oxide 1 25 0.13 0.047 0.20 0.025 0.31 0.024 0.009 0.39 0.030 672 Oxide 2 .... 25 .095 .11 .018 .003 .55 .009 .004 .079 .020 673 Oxide 3 25 .0037 .006 .002 .0003 .016 .003 .001 .029 .003

32
Selenium Base

This SRM is intended to bridge the gap between commercial materials available in bulk and

selenium available in primary or purer grades. It should prove useful to the small research laboratory, or to the individual engaged in purification, as a characterized starting material. It should be

useful also as a homogeneous material in analytical procedures when a high-purity primary grade is neither necessary nor available.

Chemical Composition (Nominal Parts Per Million) SRM

Type

Wt/Unit

(grams) Mn S Cu Ni Cr V Mo Co As Sn

726 Selenium, Intermediate Purity .... 450 <0.3 12 ±3 <1 <0.5 <1 N.D. <0.3 N.D. <2 <1

SRM

Al B Pb Bi Ag Ca Mg Te Fe CI Tl Be Cd In

726 <1 <1 <1 N.D. <1 <1 <1 0.3 ±0.1 1 <0.5 <0.5 N.D. N.D. N.D.

N.D. = Not detected at limits of detection of <0.5 ppm.

Tin-Base Alloys

Chemical Composition (Nominal Weight Percent) SRM

Type Pb Sn Sb Bi Cu Fe As Ag Ni

54d 0.62 88.57 7.04 0.044 3.62 0.027 0.088 0.0032 0.0027

Titanium-Base Alloys

Chemical Composition (Nominal Weight Percent) SRM

Type

Wt/Unit

(grams) c Mn Si Cu V Mo Sn Al Fe N

173a 174

176

6A1-4V 100

100

100

0.025 0.037

.015 0.002 4.06 0.005 6.47 4.27

5.16

0.15 .175 .0700.018

.012

.010 4Al-4Mn 4.57 5Al-2.5Sn .015 0.0008 .003 .0003 2.47

Zinc-Base

Chemical Composition (Nominal Weight Percent) SRM

Type

Wt/Unit

(grams) Mn Cu Ni Sn Al Cd Fe Pb Ag Mg Ti

94 c Die Casting

Alloy 150 4500.014 1.01 0.000570.006 0.006

(.000002) 4.13 0.002 .00012 0.018

.00027

0.006

.00111 0.042 728 0.00011

Zirconium-Base

Chemical Composition (Nominal Parts Per Million) SRM

Type

Wt/Unit

(grams) C Mn Si Cu Ni Cr Ti Sn (Wt%) Fe N U

360a Zircaloy-2 100 136 3 51 140 554 1060 27 1.42 1441 43 0.15

33
Nonferrous Alloys (Solid Form)

These SRM's are designed to fill the basic needs of the nonferrous primary and secondary metals

industries for analytical control, primarily with optical emission and x-ray spectroscopic methods.

Both nominal chemical composition and analytical range SRM's have been prepared for many of the

commercially important nonferrous alloy systems.

Copper-Base Alloys

Eight groups of copper-base alloy SRM's have been prepared to provide for analytical control by

rapid instrumental methods in the copper industry. These SRM's are intended primarily for calibration of optical emission and x-ray spectroscopic equipment. These SRM's have been prepared in two

forms: chill-cast form (with "C" prefix) for the producer (1 1/4 X 1 1/4 in blocks), and wrought

form for the consumer (disks, 1 1/4 in in diameter and 3/4 in thick). Both forms have nearly

identical chemical compositions. Each of the eight principal copper-base alloys are covered by three

SRM's comprised of a "nominal-composition" together with a low- and a high-composition standard. To make the cartridge-brass SRM's more widely applicable, a number of trace elements were

purposely added to and certified for these SRM's. (The low-composition cartridge-brass A, CI 100,

is no longer available.) The beryllium copper SRM's are representative of the nominal chemical

composition of three Copper and Brass Research Association (CABRA) alloy designations.

(Values in parentheses are not certified, but are given for information only.)

SRM

1101 CHOI

1102

1103 C1103

1104 C1104

1105 CI 105 1106 C1106

1107 C1107

1108 CI 108 1109 C1109

1110 C1110

1111 Cllll

1112 C1112

1113 C1113

1114 C1114

1115 C1115

1116 CI 116 1117 C1117

1118 C1118

1119 C1119

1120 CI 120

1121 CI 121

1122 CI 122

1123 CI 123

Type

Chemical Composition (Nominal Weight Percent)

Cu Zn Pb Fe Sn Ni Al Sb As

Cartridge Brass B . .

.

Cartridge Brass C . . . Free-Cutting Brass A

Free-Cutting Brass B

Free-Cutting Brass C

Naval Brass A

Naval Brass B

Naval Brass C

Red Brass A

Red Brass B

Red Brass C

Gilding Metal A

Gilding Metal B

Gilding Metal C

Commercial Bronze A

Commercial Bronze B

Commercial Bronze C

Aluminum Brass A . . . Aluminum Brass B . . . Aluminum Brass C . .

.

Beryllium Copper

CA-172

Beryllium Copper

CA-170

Beryllium Copper

CA-175

69.50

72.85 59.23 61.33

63.7 59.08

61.21 64.95

82.2 84.59

87.14 93.38

95.03 96.45

87.96 90.37

93.01

75.1

.77.1

.80.1

.97.49

.97.45

97.10

30.30

27.10

35.7

35.3 34.0 40.08

37.34 34.42

17.4 15.20

12.81 6.30 4.80

3.47 11.73

9.44 6.87

21.9

20.5

18.1

(0.01)

(.01)

(.01

.05 .020

3.73

2.77

2.0 0.032

.18 .063

.075 .033

.013 .057

.026 .012

.013

.042 .069

.025 .050

.105

(.002)

(.003)

(.001)

.037

.011

.26 .088

.044

.004

.037 .050

.053 .033 .010

.070

.043 .017

.13 .046 .014

.065 .030

.015

.085

.16

.04

.016

.006

.88

.43

.21

.74 1.04 0.39

.10 .051 .019

.12 .064

.027

.10 .044

.021

.01

(.01)

(.01)

.013

.005

.16 .070

.043

.025 .098

.033

.10 .053 .022 .100

.057

.021 .074 .048

.020

.012

(.01)

(.01)

.0006 .0007

2.80

2.14

1.46

0.07

.17

.02

.009

.004

.007 .040

.090
(Continued)

Chemical Composition (Nominal Weight Percent)

Be Bi Cd Mn P Si Ag Te

.00055

.00003

.0004

.0005

.0055 .0045.0055

.0045 .0020.0048

.003

.005 .003

(.005)

(.002)

.003 .0010

.0015

.0003

.005

.025 .006

.009 .008

.009

.005 .008

.002

.13 .070

.018

(.005)

(.004)

(.002)

.0021 .0015

.0011

.11

.17

.03

1.90

1.75

0.46

(.004)

(.004)

(.002) .

(.005)

(.005)

(.009)

Co

0.295

.220

2.35

Cr SRM

( 0.002)

(.002)

(.002)

1101 1102

1103

1104 1105

1106 1107 1108

1109

1110

1111 1112

1113

1114

1115

1116 1117 1118

1119

1120

1121

1122

1123

35
Lead-Base Alloy

These SRM's are designed primarily for the /calibration of optical emission and x-ray spectrometric methods of analysis. SRM 1131, Solder, and SRM 1 132, Bearing Metal, are avaifable in chip

form as: 53e ( 1 1 32) and 1 27b (1131), see Lead-base Alloys, page 32 .Chemical Composition (Nominal Weight Percent) SRM

1131

1132

Type

Solder Pb60-Sn40

Bearing Metal

Other Forms

127b

53e

Size

31.4 mm D X 19 mm thick

31.4 mm D X 19 mm thick

Cu

0.011

.054

Ni

0.012

.003

As

0.01

.057

Sn

39.3

5.84

Sb

0.43

10.2

Bi

0.06

.052

Ag

0.01

Fe

<0.001

Nickel-Base Alloys

These SRM's are designed primarily for calibration in optical emission and x-ray spectroscopic

methods of analysis. They are issued in disk form.

Chemical Composition (Nominal Weight Percent) SRM

Type Unit Size C Mn P s Si Cu Ni Cr Mo Co Fe

1159 1 1/4 in D x 3/4 in thick 0.007 0.305 0.003 0.003 0.32 0.038 48.2 0.06 0.010 0.022 51.0 1160 Ni80, Mo4, balance Fe ... 11/4 in Dx 3/4 in thick .019 .550 .003 .001 .37 .021 80.3 .05 4.35 .054 14.3

Tin-Base Alloys

These tin metal SRM's have been prepared primarily for the tin-plate industry; they are useful for

the calibration of optical emission spectroscopic equipment by the "point-to-point" technique.

They are furnished in the form of rods, 1 /4 in in diameter and 4 in long.

Chemical Composition (Nominal Weight Percent) SRM Type Cu Ni Co As Pb Sb Bi Ag Zn Cd

431 Tin A .... 0.19 0.038 0.021 0.16 0.19 0.19 0.020 0.015 0.041 0.020 432 TinB .097 .020 .011 .075 .094 .095 .0098 .0095 .020 .0095 433 TinC .055 .0095 .0045 .047 .055 .050 .0052 .0055 .0095 .0053 434 TinD .019 .0044 .0020 .019 .022 .019 .0020 .0018 .0046 .0020 435 TinE .0077 .0024 .0011 .0090 .015 .010 .0011 .0010 .0020 .0011

Titanium-Base Alloys

These SRM's are issued primarily for the aerospace industries for analytical control and equipment calibration purposes. These SRM's are in disk form intended as calibration materials for

optical emission and x-ray spectroscopic methods of analysis of similar materials.

Chemical Composition (Nominal Weight Percent) SRM

Type Unit Size Mn Cr Fe Mo Al V

641- 8Mn (A) 1 1/4 in Dx 3/4 in Disks 6.68 642 8Mn(B) 1 1/4 in Dx 3/4 in Disks 9.08 643 8Mn (C) 1 1/4 in D x 3/4 in Disks 11.68 644 2Cr-2Fe-2Mo (A) . . . 1 1/4 in Dx3/4 in Disks 1.03 1.36 3.61 645 2Cr-2Fe-2Mo (B) ... 1 1/4 in Dx 3/4 in Disks 1.96 2.07 2.38 646 2Cr-2Fe-2Mo (C) ... 1 1/4 in Dx 3/4 in Disks 3.43 2.14 1.11 654a 6A1-4V (B) 1 1/4 in Dx 1/4 m Disks «0.1) (0.20) (0.20) «0.05; 6.3? 3.9

S

36
Titanium-Base Alloys - Oxygen and Hydrogen Only

SRM's intended for determination of hydrogen and oxygen in titanium-base alloys are available

in sheet and rod form. These were designed primarily for calibration of vacuum fusion or inert gas fusion equipment.

A group of iron-base alloys certified for oxygen also are available. See Oxygen Standards,

page 2 7.

SRM

Type Unit Size Wt/Unit

(grams)

Oxygen

(ppm)

Hydrogen

(Wt%)

352 353

354

355 356

Unalloyed titanium for hydrogen .... Unalloyed titanium for hydrogen .... Unalloyed titanium for hydrogen ....

1/4 in square x 0.05 in thick 1/4 in square X 0.05 in thick 1/4 in square X 0.05 in thick Rod-1/2 in D i 2 in long Rod-.425 in D x 1 3/4 in long

20

20

20 3031 1332

0.0032

.0098

.0215

Alloy, 6A1-4V

Zinc-Base Alloys

Zinc-base alloy SRM's are available ranging from very high-purity zinc to commercial materials

such as spelter and die-casting alloy compositions. They are supplied as bar segments (disks) in- tended for calibrating and checking optical emission and x-ray spectroscopic techniques. The certifi- cate of analysis supplied with each gives the chemical composition determined at NBS and values

determined by other laboratories that have cooperated in the certification of the SRM's. For

high-purity Zinc, see High-Purity Metals, page 40

.

Die Casting Alloys and Spelter

Zinc-base die casting alloys and a spelter SRM are available. They were designed for calibration of

optical emission spectroscopic techniques primarily for analysis of such alloys as ASTM Designations AG 40A and AC 41 A. The SRM's were prepared by a continuous chill-casting process into

square bars which then were cut into segments. The certified portion of each segment is that part

included between 3/16 inch and 11/16 inch from each side. The center core, 3/16 inch square, and

the outer rim, 3/16 inch from the outer surface, are parts which may differ in chemical composition

for some elements from the certified portion, and should not be used.

(Values in parentheses are not certified, but are given for information only.)

Chemical Composition (Nominal Weight Percent) SRM

Type Unit Size Cu Al Mg Fe Pb Cd

625 Zinc-base A-ASTM AG 40A . . 1 3/4 in square x 3/4 in thick 0.034 3.06 0.070 0.036 0.0014 0.0007 626 Zinc-base B-ASTM AG 40A .

.

1 3/4 in square x 3/4 in thick .056 3.56 .020 .103 .0022 .0016 627 Zinc-base C-ASTM AG 40A . . 1 3/4 in square x 3/4 in thick .132 3.88 .030 .023 .0082 .0051 628 Zinc-base D-ASTM AC 41A . . 1 3/4 in square x 3/4 in thick .611 4.59 .0094 .066 .0045 .0040 629 Zinc-base E-ASTM AC 41A . . 1 3/4 in square x 3/4 in thick 1.50 5.15 .094 .017 .0135 .0155 630 Zinc-base F-ASTM AC 41 A .. 1 3/4 in square x3/4 in thick 0.976 4.30 .030 .023 .0083 .0048 631 Zinc spelter (modified) 1 3/4 in square x 3/4 in thick .0013 0.50 «001) .005 (.001) .0002

SRM

Chemical Composition (Nominal Weight Percent)

Sn Cr Mn Ni Si In Ga Ca Ag Ge

625 626

627 628

629

0.0006

.0012

.0042

.0017

.012

0.0128

.0395 .0038

.0087 .0008

0.031

.048 .014

.0091

.0017

0.0184

.047 .0029

.030 .0075

0.017

.042

.021 .009 .078 630

631

.0040

.0001 .0031 .0001

.0106

.0015

.0027 K.0005)

.022 <002 (0.0023) (0.002) <0.001 K0.0005) (0.0002)

501-866 O - 73 - 6 37
Zirconium-Base Alloys

A zirconium metal SRM certified at the parts-per-million level, is available in the form of a wrought disk for checking and calibrating of optical emission and x-ray spectroscopic instruments

used in the analytical control of trace level constituents of zirconium for use in nuclear power

applications.

(Values in parentheses are not certified, but are given for information only.)

Chemical Composition (Nominal Parts Per Million) SRM

Type Unit Size Mn Si Cu Ni Cr W Ti Al B U Fe

1210 Zirconium A 1 1/4 in Dx 3/4 in thick (5) (30) 10 8 95 (4) 26 (60) K0.25) 1.8 2500

Gases in Metals

Values in parentheses are not certified but are given for additional information on composition.

Certified for Nitrogen

Steels, (Chip Form>

SRM

Type

Nitrogen

(Wt%)

10g 0.015 12h Basic Open Hearth, 0.4C .006 32e Ni-Cr(SAE 3140) .009 33d Ni-Mo (SAE 4820) (.011) 50c W18-Cr4-Vl .012 51b .011 65d Basic Electric Furnace, 0.3C . .013 72f Cr-Mo(SAE X4130) .009 73c Stainless (Crl3) (SAE 420) . . .037 100b Manganese (SAE Tl 340) .004 133a Stainless (Cr 1 3-Mo0. 3-S0. 3) . .032 139a Cr-Ni-Mo (AISI 8640) .008 153a Co8-Mo9-W2-Cr4-V2 (Tool) . .024 160b Stainless (AISI 316) .039 343 Stainless (SAE 431) .074 346 Valve (Cr22-Ni4-Mn9) .441

Steel, (Granular Form)

SRM Nitrogen

Type (Wt%)

163 0.007

Cast Irons (Chip Form)

SRM

Type

Nitrogen

(Wt%)

5L

6g

7g

55e 107b

Cast iron (high phosphorus)

.

Cast iron (Ni-Cr-Mo)

0.006

.006

.004

.004

(.008)

Titanium Base (Chip Form)

SRM

Type

Nitrogen

(Wt %)

173a

174

176

6A1-4V

4Al-4Mn

5Al-2.5Sn

0.018

.012 .010

Zirconium Base Alloys, (Chip Form)

SRM

Type

Nitrogen

(Wt%)

360a 0.0043

38
Certified for Oxygen and Nitrogen

Steels (solid form)

Oxygen Nitrogen

SRM Type (ppm) (ppm)

1090 491 (60) 1091 Stainless steel (AISI 431) .... 131 (945) 1092 28 (3.6) 1093 60 (4807) 1094 4.5 (71) 1095 AISI 4340 Steel 9 (37) 1096 AISI 94B17 (Mod) Steel 10.7 40.4 1097 Cr-V (Mod) Steel 6.6 (41) 1098 High Carbon (Mod) Steel .... (17) 30 1099 Electrolytic Iron 61 (13)

Certified for Hydrogen or Oxygen

Titanium Base (solid form)

SRM

Type

Hydrogen

(Wt%)

Oxygen

(ppm)

352

353

354

355 356 6A1-4V Alloy

0.0032

.0098

.0215 3031 1332

39
High-Purity Metals

Very high-purity metal SRM's are being made available to fill the needs of analysts determining

impurity elements in high-purity metal materials. They are intended to serve as bench marks in

calibration of methods and equipment; also, they are expected to be valuable in the development of

new or improved methods and techniques for extending the sensitivity of detection in the determination of trace constituents in various materials by chemical, optical emission, solid mass spectroscopy, activation, and resistivity methods of analysis.

The certificate of analysis supplied with each high-purity SRM gives the state-of-the-art information on chemical composition in the cooperating laboratories for the various trace determinations

reported.

High-purity gold is available in both wire and rod form. The wire form (W), is intended for

applications such as in spark source mass spectroscopic techniques. The low levels of impurities

make it important for evaluating instrument and system blanks. The rod form (R), is intended for

application in other methods of characterization.

Platinum is available in wire form as a high-purity material and as a doped composition material.

Zinc is available in a high-purity and in a less pure version. Both were prepared from the same

starting material. The high-purity material is the result of further purification by vacuum distilla- tion, zone refining, and degasification. The zinc is supplied in the form of semicircular bar segments.

SRM Type Unit Size

(Nom

Cu

Chernia

irtal Parts

Ni

il Compo

Per Millie

Sn

sitions mi by W«

Pb

ight)

Zr 685W*

685R*

680L1

680L2

681L1

681L2

682*

683*

High-Puiity Gold (Wire)

High-Purity Gold (Rod) , High-Purity Platinum (Wire) .

.

High-Purity Platinum (Wire) .

.

Doped-Platinum (Wire)

1.4mm D * 102mm long

5.9mm D * 25mm long

0.51mm Dx 102mm long

0.51mm D * 1.0m long

0.51mm D x 102mm long

0.51mm D * 1.0m long

Semi circular segments 57mm D x 19mm long

Semi circular segments 57mm D x 19mm long

0.1

.1

.1

5.1 0.042

5.9

<1

0.5

(0.02)

(.02)

<1

12

11.1

<JU

11

Chemical Compositions

(Nominal Parts Per Million by Weight)

Ag Mg In Fe O Pd Au Rh b Cd Tl 685W*

685R*

680L1

680L2

[0.1]

[-1]

.1 <1

0.007

.007

0.3

.2

.7

[2] [<2]

4 0.2 <1 <0.2 <p.oi

681L1

681L2

682*

683*

2.0

(0.02)

1.3

12 5

(0.1) 2.2

7 6 9 9 11

(0.1)

1.1 (0.2)

Certificate gives upper limits for other elements found to be present.

40
Microprobe Standards

These SRM's provide a highly homogeneous material at about the micrometer of spatial resolution. They are intended primarily for use in calibration of quantitative electron microprobe analytical techniques.

Fe-Cr-Ni Alloy

The Fe-Cr-Ni alloy, SRM 479, is a wafer (4.6 mm in diameter and 1 mm thick) and is characterized for chemical homogeneity of iron, chromium, and nickel at the micrometer level of spatial

resolution. It is satisfactory for use as a homogeneous material for electron probe microanalysis.

Tungsten — 20% Molybdenum

The tungsten-20% molybdenum alloy, SRM 480, consists of a core of tungsten-20% molybdenum

wire embedded in pure molybdenum onto which pure tungsten has been deposited by electroplating

to provide a composite. The Certificate supplied with this SRM gives the values for tungsten and

molybdenum as determined by analysis and a summary of homogeneity testing results from approximately 1500 determinations for tungsten and molybdenum by electron probe microanalysis. Additional details on homogeneity characterization are given in NBS Spec. Publ. 260-16. (See inside

back cover for ordering instructions.)

Gold-Silver

Six color-coded wires comprise this set, SRM 481. The wires consist of a high-purity gold and a high-purity silver wire and four wires with nominal chemical composition differences in steps of

20%. The Certificate of Analysis supplied with each SRM gives the results of a cooperative program

of analysis and a summary of the extensive homogeneity testing performed in certifing the wires.

Although designed for quantitative elemental microprobe analysis, the wires should be equally

useful for other microtechniques.

Gold-Copper

This set of color-coded wires, SRM 482, is similar to the gold-silver set. In both sets special

precautions were taken to achieve homogeneity on a microscopic scale.

Iron — 3% Silicon

The iron-3% silicon microprobe, SRM 483, is a platelet (3 mm X 3 mm X 0.28 mm), and is characterized for chemical homogeneity of iron and silicon at the micrometer level of spatial

resolution. It is satisfactory for use as a homogeneous material for electron probe microanalysis.

Type

Fe-Cr-Ni Alloy

Tungsten-20

Mo Alloy . AulOOA

Au80-Ag20B

Au60-Ag40C

Au40-Ag60D

Au20-Ag80E

AglOOF

AulOOA

Au80-Cu20B

Au60-Cu40C

Au40-Cu60D

Au20-Cu80E

CulOOF

Iron-3%

Silicon . .

.

Unit Size Au

Wafer-4.6 mm D X 1 mm thick

Wafer- 1 mm D X 1 mm thick Wire-0.5mm D X Wire-0.5mm D X Wire-0.5mm D X Wire-0.5mm D X Wire-0.5mm D X Wire-0.5mm D X Wire-0.5mm D X Wire-0.5mm D X Wire-0.5mm D X Wire-0.5mm D X Wire-0.5mm D X Wire-0.5mm D X

50 mm long 50 mm long 50 mm long 50 mm long 50 mm long 50 mm long 50 mm long 50 mm long 50 mm long 50 mm long 50 mm long 50 mm long

Wafer-3mm X 3mm X 0.28m

100.00

80.05 60.05 40.00

22.43

100.00

80.15 60.36 40.10

20.12

Cu

19.83 39.64 59.92

79.85 100.00

Chemical Composition (Nominal Weight Percent) Ag

19.96 39.92 59.90

77.58 100.00

W

78.5

Mo

21.5

Si

3.22

Fe

(by difference)

71.0

96.7-96.8

Cr Ni

18.3 10.7

41
Primary, Working, and Secondary

Standard Chemicals

These SRM's are high-purity chemicals defined as primary, working, and secondary standards in

accordance with recommendations of the Analytical Chemistry Section of the International Union

of Pure and Applied Chemistry [Ref. Analyst 90, 251 (1965)] . These definitions are as follows:

Primary Standard:

a commercially available substance of purity 100 ± 0.02 percent (Purity 99.98+ percent).

Working Standard:

a commercially available substance of purity 100 ± 0.05 percent (Purity 99.95+ percent).

Secondary Standard:

a substance of lower purity which can be standardized against a primary grade standard.

SRM Type Wt/Unit

(grams)

Certified Use Purity Stoichiometric

17 40h

41a

83c 84h

Sucrose Sodium Oxalate Dextrose (D-glucose)60

60

70

7560

Polarimetric Value Reductometiic Value Reductometric Value Reductometric Value

Acidimetric Value

a 99.95 b

99.99

99.99 136c 350

723 944

949d

60

3050

0.5 0.5

Oxidimetric Value

Acidimetric Value

Basimetric Value Assay

Assay

99.98

99.98

99.97 100

99.99 950a

951 960

984

987

Uranium Metal Rubidium Chloride

25 100

26

1

1

Uranium Oxide Standard Value

Acidimetric and Boron Isotopic Value

Assay

Assay and Isotopic

Assay and Isotopic

99.94 100.00

99.975 99.90

99.98 988

999

Strontium-84 Spike Potassium Chloride

0.010 60

Assay and Isotopic

Assay Standard for ^TM 99.9 99.98 99.99

aSucrose - Moisture <0.01 percent, Reducing Substances <0.02 percent, Ash 0.003 percent. ^Dextrose - Moisture <0.2 percent, Ash <0.01 percent.

Microchemical Standards

These SRM's are furnished as fine crystals of suitable homogeneity for use as standards for

conventional microchemical methods of analysis employing samples of approximately 5 mg. See

also Microprobe Standards, page 41 .

Wt/Unit Elements SRM Type (grams) Certified

140b Benzoic acid 2 C,H

141b 2 N,C,H

142 2 Methoxyl(CH 3 0-) 143b 2 S,C,H,N 147 Triphenyl phosphate 2 P

148 2 N,C,H

2141 2 N

2142 2 Br 2143 p-Fluorobenzoic Acid 2 F(IN PREP)

2144 2 C1(IN PREP).

42
Clinical Laboratory Standards

These SRM's are intended for use in the calibration of apparatus and checking methods of

analysis used in clinical and pathological laboratories, and to assist manufacturers of clinical products in meeting the chemical and physical specifications required for clinical chemicals. (For details on SRM's 930 and 931, see Spectrophotometry Filters, page 65.)

SRM Type Purity % Wt/Unit

O 1 1 99.4 0.5g

y 1Z 99.7 25e

Q

1

T TiH p A 99.7 10g

y 14 99.8 lOe 915 99i9 20g

y 10 1 1 in l Trill 99.0 lOOmg

917 99.9 25g

Q 1 ft 99.9 30g 919 99.9 30g 920 99.8 50g 921 IN PREP

922 TrisOiydroxymethyl)aminomethane 99.9 25g 923 Tris(hydroxymethyl)aminornethane HC1 . .

.

99.7 35g 924 100.5 30g 925 VMA (4-hydroxy-3-methoxymandelic acid) IN PREP

930a Glass Filters for Spectrophotometry Set of 3 931 Liquid Filters for Spectrophotometry 3 Sets of 4

*SRM 915 Calcium Carbonate, was used to develop the first referee method of analysis in clinical chemistry. This work is described

in NBS Special Publication 260-36, A Referee Method for the Determination of Calcium in Serum. (See inside of back cover for ordering instructions.)

Biological Standards

These SRM's are intended for use in the calibration of apparatus and methods used in the analysis

of biological materials for major, minor, and for trace elements.

(Values in parentheses are not certified, but are given for information only.)

Content in Mg/g (or where noted, wt %)

SRM Type Wt/Unit

(grams) As Bi B Br Cd Ca CI

1571 Orchard Leaves .... 75 14 (0.1) 33 (10) 0.11 2.09% (700) 1573 Tomato Leaves .... IN PREP

1577 Liver, Bovine 50 (0.055) .27 (123) (2600)

SRM Co Cu Cr F Fe Pb Li Mg Mn Hg Mo Ni

1571 (0.2) 12 (2.3) (4) 300 45 (14) 0.62% 91 0.155 1.3 1573 1577 ( -18) 193 270 0.34 (605) 10.3 .016 (3.2)

SRM N P K Rb Se Ag Na Sr S n U Zn

1571 1573

1577

2.76%

10.6%

0.21% 1.47%

0.97%

12

18.3

0.08

1.1 (0.06)

82

0.243%

(37)

(0.14)

(2300)

(0.05)

0.029

( .0008)

25

130

1

i

i 43
Metallo-organic Compounds

These SRM's are intended for the preparation of solutions in oils of known and reproducible

concentrations of metals. Because "matrix" effects occur, it is desirable to prepare the standard

solutions in oil identical or similar to the oil being studied. Possession of an adequate collection of

these metallo-organic SRM's permits the preparation of any desired blend of known concentrations

of metal in the appropriate lubricating oil. They are used primarily for the calibration of spectrochemical equipment used in the determination of metals in lubricating oil. This technique is used

extensively in the defense program, the transportation industry, and other industries where the

consequences of failure of a moving metal part may range from inconvenient to catastrophic.

Details of the selection, preparation, and analysis of the compounds can be found in NBS Monograph 54. (See inside back cover for ordering instructions.)

The Certificate supplied with each SRM gives the percentage of the element of interest and

directions for preparing a solution of known concentration in lubricating oil.

Constituent Certified SRM Wt/Unit

Element (wt. percent) (grams) Type

1075a Al 8.1 5 Aluminum 2-ethylhexanoate

1051b Ba 28.7 5 Barium cyclohexanebutyrate 1063a B 2.4 5 Menthyl borate 1053a Cd 24.8 5 Cadmium cyclohexanebutyrate 1074a Ca 1 ^ c 5 Calcium 2-ethylhexanoate

1078b Cr 9.6 5 Tris( 1-phenyl- 1 , 3-butanediono)chromium(III)

1055b Co 14.8 5 Cobalt cyclohexanebutyrate

1080 Cu 16.5 5 Bis( 1-phenyl- 1 ,3-butanediono)copper(II)

1079b Fe 10.3 5 Tris(l-phenyl-l,3-butanediono)iron(III) 1059b Pb 36.7 5 Lead cyclohexanebutyrate 1060a Li 4.1 5 Lithium cyclohexanebutyrate 1061c Mg 6.5 5 Magnesium cyclohexanebutyrate 1062a Mn 13.8 5 Manganous cyclohexanebutyrate 1064 Hg 36.2 5 Mercuric cyclohexanebutyrate

1065b Ni 13.9 5 Nickel cyclohexanebutyrate 1071a P 9.5 5 Triphenyl phosphate 1066a Si 14.1 5 Octaphenylcyclotetrasiloxane 1076 K 10.1 5 Potassium erucate 1077a Ag 42.6 5 Silver 2-ethylhexanoate

1069b Na 12.0 5 Sodium cyclohexanebutyrate 1070a Sr 20.7 5 Strontium cyclohexanebutyrate

1057b Sn 23.0 5 Dibutyltin bis( 2-ethylhexanoate)

1052b V 13.0 5 Bis(l-phenyl-l,3-butanediono)oxovanadium(IV)

1073b Zn 16.7 5 Zinc cyclohexanebutyrate

44
ENVIRONMENTAL STANDARDS

Analyzed Gases

These SRM's are intended for the calibration of apparatus used for the measurement of various

components in gas mixtures, and in some cases for particular atmospheric pollutants. Each SRM is accurately certified and is primarily intended to monitor and correct for long-term drifts in instruments used.

SRM Type Vol/Unit

(liters at STP)

Certified Constituents

1601 Carbon dioxide in Nitrogen 68 COa, 308 ppm

1602 Carbon dioxide in Nitrogen 68 C02, 346 ppm

1603 Carbon dioxide in Nitrogen 68 C02

, 384 ppm

1604a Oxygen in Nitrogen 68 02

, 1.5 ppm

1605 68 02

, 10 ppm

1606 Oxygen in Nitrogen 68 02

, 112 ppm

1607 68 02

, 212 ppm

1608 68 02

, 978 ppm

1609 68 02

, 20.95 mole percent 1610 68 Methane, 0.103 mole percent 1611 68 Methane, 0.0107 mole percent 1613 68 Methane, 0.000102 mole percen

Note: SRM's 1665 through 1669, Propane in Air, and SRM's 1673 through 1675, Carbon Dioxide in Nitrogen, are available for calibrating equipment used to monitor automotive emission gases.

Permeation Tubes

These SRM's are intended for calibrating air-pollution monitoring apparatus, and may be used to

verify air-pollution analytical methods and procedures. Each tube is individually calibrated and its permeation rate is certified over the temperature range of 20 to 30 °C.

The following table is provided for information only. The values given in the table do not

represent certified values for any individual SRM. The concentrations of S02 in ppm are based on

an approximate permeation rate of 0.28 jug per cm per minute at 25 °C, for flow rates of 1, 5, and

10 liters per minute.

SRM Type Tube Length

(cm)

Permeation Rate

(jug per min)

Typical Concentrations (ppm)

Flow Rates (liters per minute)

1 5 10

1625 Sulfur Dioxide Permeation Tube 10 2.8 1.07 0.214 0.107 1626 Sulfur Dioxide Permeation Tube 5 1.4 0.535 .107 .0535 1627 Sulfur Dioxide Permeation Tube 2 0.56 .214 .0428 .0214

Analyzed Liquids

These SRM's are intended for use in the analysis of liquids for elements that, when liberated,

could become environmental pollutants.

Element Vol/Unit

SRM Type Certified wt% (ml)

1621 Sulfur in Residual Fuel Oil S 1.05 100 1622 Sulfur in Residual Fuel Oil S 2.14 100 1623 Sulfur in Residual Fuel Oil S 0.268 100

1624 Sulfur in Distilate Fuel Oil S .211 100

45
Analyzed Solids

These SRM's are intended for use in the analysis of materials for elements of interest in health or environmental problems. (See also Clinical SRM's, page 43 .)

Element SRM Type Certified Content Wt/Unit

1579 Powdered Lead Based Paint Pb 11.87 wt% 35 1630 Mercury in Coal 0. 1 3 ppm 50

1631 Sulfur in Coal S set(3)

Hydrocarbon Blends

Eight standard hydrocarbon blends are available for calibration of mass spectrometers and gas

chromatographic procedures used in the analysis of gasolines, naphthas and blending stocks. The

even numbered SRM's, 592, 594, 596, and 598, are representative of typical virgin napthas and the

odd numbered SRM's 593, 595, 597, and 599, are representative of typical catalytically cracked

naphthas in the C7 and C8 paraffin and cycloparaffin series. Each SRM is supplied in a unit of ten sealed ampoules. Each ampoule contains 0.03 ml of the

blend. Each ampoule is intended to provide material for only one calibration analysis so that

possible fractionation of components will be avoided.

For individual components present in the mixtures in the amount of 10% or less (by volume), the

limits of error in composition are not greater than ±0.01 percent and for components present in more than 10 percent, the limits of error are not greater than ±0.10 percent.

o E\ iv; 1 594 5,5 596 597 COO Dyo COO

D1CIIU 1 L 3 4 5 6 / oO

Ilnit UJlll (J <Amnrmlpc^ ill i G

|] K HU1 [1^ ^ Ji 1 0 i n 10 10 10 10 1U

Hydrocarbon Volume Percent (Nominal)

n-Heptane 45 17 23 25 3-Methylhexane 16 30

2,2-Dimethylpentane 4

2,3-Dimethylpentane 6 20

2,4-Dimethylpentane 5 8

1 39 12 2-Methylheptane 19 25 3-Methylheptane 16 23 4-Methylheptane 8 8

3 3 2,3-Dimethylhexane 4 9 2,4-Dimethylhexane 5 5 2,5-Dimethylhexane 6 9 3,4-Dimethylhexane 6 Methylcyclohexane 57 32

Ethylcyclopentane 9 14 1,1-Dimethylcyclopentane 4 3

1,trans- 2-Dimethylcyclopentane 14 30

1, trans- 3-Dimethylcyclopentane 16 21 Ethylcyclohexane 20 17

1, trans- 2-Dimethycyclohexane 18 7 l,cis-3-Dimethylcyclohexane 25 19

11 14

l-Methyl-cis-2-ethylcyclopentane 7 20

1,1,3-Trimethylcyclopentane 5 4

l,trans-2-cis-3-Trimethylcyclopentane .

.

9 6

1, trans- 2-cis-4-Trimethylcyclopentane .

.

5 13

46
Ores

These SRM's are intended for use in checking the accuracy of assay methods. They are certified

for their content of elements of economic interest, and occasionally, have additional data given for

information only. These SRM's are supplied in the form of fine powders, usually passing a 100-mesh

or finer sieve. Chemical Composition (Nominal Weight Percent)

SRM Type

Wt/Unit

(Gram) CaF Fe Mn Li,0 SiO, P,0<

Available Oxygen

25c

27e 79a 113a

180

181

182

183

Manganese

Iron (Sibley)

Fluorspar

Zinc, concentrate

Fluorspar, high-grade . Lithium (Spodumene)

Lithium (Petalite) . .

Lithium (Lepidolite) .

100

100

120

IN PREP

120

4545

45

97.39

98.8

66.58

57.85 2.36

3.65 0.22

6.4 4.3

4.1

0.042

16.7

Chemical Composition

(Nominal Weight Percent as the Oxide)

SRM Type

Wt/Unit

(gram) A12 03 CaO P2 Os Si0 2 Fe2 03 F C02 Ti02 Na2 0 MgO

69a Bauxite . . 50 55.0 0.29 0.08 6.01 5.8 2.78 <0.01 0.02 120b Phosphate Rock

(Florida) 90 1.06 49.40 34.57 4.68 1.10 3.84 2.79 0.15 < .35 .28

Zr02 K2 0 K2 0 Cr2 0.i so3 MnO V2 0 > BaO CdO Loss on

Ignition

69a

120b

0.18 <0.01 < .12 0.090

0.05 0.04 0.02

.28 0.03 0.01 0.002

29.55

Concentrations in weight percent

(except as noted)

SRM TYPE

Wt/Unit

(grams)

Total Cu Re Mo

100 0.84 (0.3)* 100 .091 ( .05>* 50 28.45 (10.2)* 35 1.038 0.087 ( + )

Au

330

331 332

333

Copper, millheads

Copper, milltails. Copper, concentrate . . . Molybdenum, concentrate

* parts per million

+ Nominal value 93% MoS.
Cements

These SRM's are furnished for x-ray spectroscopic analysis and for chemical analysis of cements

and related materials. Because these SRM's are hygroscopic, each unit consists of three sealed vials

each containing approximately 5 g of material. The supply of the 1011, 1013-1016 Cements will soon be exhausted and replaced with seven new Cements, SRM's 633-639. (Values in parentheses

are not certified, but are given for information only.)

SRM Type

633 Portland B (red) 634 Portland C (gold) 635 Portland D (blue) 636 Portland F (yellow) .... 637 Portland G (pink)

638 Portland I (green) 639

1011 Portland 1013 1014 Portland 1015 Portland 1016 Portland

Wt/Unit

(grams)

Cements

SiO,

Chemical Composition

(Nominal Weight Percent as the Oxide)

TiO, P,0<

15

1515

1515

NOW AVAILABLE

21.03

24.17

19.49 20.65

21.05

5.38 3.30

6.38

5.04 4.97

2.07 3.07 2.50

3.27

3.71

0.25

.20

.25

.26 .34

0.33

.20

.32

.05 .13

Fertilizer Standards

These SRM's are intended for use in the fertilizer industry as working standards for the determination of the certified constituents.

Certified Composition

SRM Type Wt/Unit

(g) N

(Wt percent) P K

193

194

Potassium Nitrate Ammonium Dihydrogen Phosphate 90

90

13.85 12.15 29.9238.66

Minerals, Refractories, Carbides, and Glasses

These SRM's are supplied in the form of powders, usually 100 mesh or finer. They are intended

to provide materials for checking the accuracy of methods used in the analysis of similar materials,

primarily in the glass, ceramics, and steel industries.

Minerals

Chemical Composition

(Nominal Weight Percent as the Oxide)

SRM Type

Wt/Unit

(grams) Si0 2 Fe2 03 A1 2 03 Ti02 MnO CaO

50 4.92 0.75 1.12 0.046 0.20 50.9 50 1.20 .28 0.19 .02 .03 30.1 40 67.1 .075 17.9 .01 0.11 40 65.2 .065 20.5 .007 2.14 60 43.7 .45 38.8 1.90 0.11 60 48.9 1.34 33.2 1.61 .31 IN PREP

IN PREP

90 99.74

lb Limestone, argillaceous 88a Limestone, dolomitic . 70a Feldspar, potash 99a Feldspar, soda 97a Clay, flint 98a Clay, plastic 81a Glass sand 165a Glass sand (low iron) . . 154b Titanium dioxide . . . .

48
Cements (Con tinued

CaO

(+SrO) SrO MgO S03 Mn2 03 Na2 0 K2 0 Li2 0 Rb2 0

Loss on

Ignition

SRM

633 634

635 636

637 638

639

66.60 0.11 1.12 1.75 0.03 0.08 0.26 (0.002) (0.001) 1.13 1011

64.34 .08 1.39 1.80 .05 .20 .32 (.001) (.004) 0.99 1013

63.36 .26 2.80 2.70 .07 .24 .99 (.005) (.007) .81 1014

61.48 .11 4.25 2.28 .06 .16 .87 (.004) (.005) 1.70 1015

65.26 .25 0.42 2.27 .04 .55 .04 (.012) «.001) 1.20 1016

Minerals ( Continued

SrO MgO Ci2 03 Na2 0 K4 0 LijO Zr02 BaO Rbs O P2 05 co2

Loss on

Ignition

SRM

0.14

.01 0.36

21.3 0.04

.01 2.55

6.2 0.037

0.25

.12 11.8

5.2 0.50

0.08

.01 40.4 46.6

41.1 46.7

0.40

0.26

13.32

lb 88a

0.02 70a

.26 .078

0.06 0.02

.15

.02

.36 99a

.18 97a 0.03 0.11 0.063

.039 .42 .03 .082 1.04 .070 .042 .03 .11 12.44 98a

81a 165a 154b

49
Refractories

Chemical Composition

(Nominal Weight Percent as the Oxide)

SRM Type

Burned Refractory (Al 2 O-40%) . Burned Refractory (Al 2 O3 -60%) Burned Refractory (Al 2 O3 -70%)

Chrome refractory

Silica refractory

Silica refractory

Burned magnesite

Wt/Unit

(grams) SiO,

Total as FeO TiO,

76a 77a

78a 103a

198

199

104 SRM

IN PREP

IN PREP

IN PREP

60

45

4560

4.6

2.54

29.96

0.16

.48

.84

0.66

.74 7.07

12.43 0.22

.02

.06 .03

Zr02 MnO P2 Os Cr 2 03 CaO MgO Li2 0 Na2 0 K2 0

Loss on

Ignition

0.01 <.01

0.11 .008

0.01 .022 32.06 0.69

2.71 18.54

0.07 0.001 0.012 0.017 0.21

.01 .007

.43 .015 .057 0.026

2.41 3.35

.13 85.67.002

.001

.015

.015 .094

.015

.17

76a 77a

78a 103a

198

199

104

Carbides

Chemical Composition

(Nominal Weight Percent) SRM

Type

Wt/Unit

(grams)

Cart

Total

ionFree

Sili< Total

;onSiC Fe Al Ti Zr Ca Mg

112 Silicon carbide 85 29.10 0.09 69.11 96.85 0.45 0.23 0.025 0.027 0.03 0.02

Glasses

SRM Type

89 Lead-Barium

91 Opal 92 Low-Boron

93a High-Boron

620 Soda-Lime, Flat .... 621 Soda-Lime, Container

Wt/Unit

(grams)

Chemical Composition (Nominal Weight Percent)

SiO, PbO A1 2 03 Fe2 03 ZnO MnO Ti02 ZrO,

65.35 67.5317.50 0.097

0.18

6.01 0.049.081 0.08 0.088

.008

0.01

.019 0.005

.0095

80.8

72.1

2.3

1.8 .029

.04

.012

.02

, .03

45 g 45 g 45 g Wafers 32 mm D X 6 mm

3 platelets 35X 35X 3 mm

IN PREP

SRM CaO

89 0.21 91 10.48 92

93a <0.02 620 7.1 621

BaO MgO K2 0 Na2 0 B 2 03 P2 05 As2 Os As2 03 so3 ci F

Loss on

Ignition

8.40

3.25 5.70

8.48 0.70

12.6

0.23

.022 0.36.102 0.03

.091 0.03 0.05.014 5.72

0.32

0.01

.4 4.014.4 .06 .3

1.40 0.03

.008 <01

3.7
Trace Element Standards

These SRM's are intended for use in calibrating instruments and in checking analytical techniques

and procedures employed in the determination of trace elements in various inorganic matrices.

[Note: For trace elements in biological matrices, see Biological Standards, page 43 .]

SRM Type — Matrix

606

607

608

609 610

611

612

613

614

615

616

617

618

619

in Calcium Carbonate

in Feldspar

in Glass, Set

in Glass, Set

in Glass, 500 ppm . .

Trace Elements

Trace Elements

Trace Elements

Trace Elements

Trace Elements

Trace Elements

Trace Elements

Trace Elements

Trace Elements

Trace Elements

Trace Elements in Glass, 0.02 ppm . Trace Elements in Glass, 0.02 ppm , Trace Elements in Glass, Set . . . .

n Glass, 500 ppm

.n Glass, 50 ppm . in Glass, 50 ppm . in Glass, 1 ppm . . in Glass, 1 ppm . .

Trace Elements in Glass, Set

Size Unit of Issue

Wafers 3 mm Diameter

Wafers 1 mm Diameter

Wafers 3 mm Diameter

Wafers 1 mm Diameter

Wafers 3 mm Diameter

Wafers 1 mm Diameter

Wafers 3 mm Diameter

Wafers 1 mm Diameter

Wafers 3 mm Diameter

Wafers 1 mm Diameter

Wafers 3 mm Diameter

Wafers 1 mm Diameter

10 gram

5 gram

Set: 2 each 614 and 616

Set: 2 each 615 and 617

6 Wafers

6 Wafers

6 Wafers

6 Wafers

6 Wafers

6 Wafers

6 Wafers

6 Wafers

Set: 1 each 610, 612,

6 14 and 6 16

Set: 1 each 611, 613,

615 and 617

NOTE: Glass - Nominal Composition: 72% Si0 2

, 12% CaO, 14% Na20, and 2% A1 20 3

.

Element

606 607 610-611

500 ppm

612-613

50 ppm

614-615

1 ppm

616-617

0.02 ppm

(1.06) (0.078)

(41)

(32)

(39)

(351) (1.30) (0.55)

(0.20)

(0.99) 0.71

1.34 Cobalt (390) (444)

(35.5) (37.7)

(35)

(39)

(36)

(39)

(0.65)

Erbium

(0.99)

(1.3) (0.5) (0.75)

13.5

(0.83) 2.32

(1.41)

(0.23) (0.18)

(0.26)

(11) (0.034)

1.85

(0.65)

Gold (25) (5)

458 51

(36) 38.57

(39.6) (0.374) 426

485

(111)

(36) 38.8

(64) 458.7

(461)

(49. 1) 425,7

(0.95) • 30 29

523.90 31.4

(39)

0.855 (0.0998)

(0.59) 0.42

45.8

(0.269) 0.748

(3. 1) 0.823

(0.026) Silver (254) 515.5

(61.8) 457.2

(437) 461.5

22.0 78.4

(15.7) 37.79

(50. 1) 37.38

(42)

65.485 41.72

(0.0082)

0.0252

(2. 5) 0.0721

Thallium

(433) ( 2. 43)

In addition to the 35 elements listed above, the Glass SRM's contain the following 26 elements: As, Be, Bi, Cs, CI, F, Ge, Hf, Hg, Li, Lu, Mg, Nb, P, Pr, Se, S, Ta, Te, Tb, Tm, Sn, W, V, Y, and Zr.

51
Nuclear Materials

Special Nuclear Materials

These SRM's consist of four groups: Plutonium Assay Standards, Plutonium Isotopic Standards,

Uranium Assay Standards, and Uranium Isotopic Standards.

These SRM's are available to AEC contractors, AEC or State Licensees, and foreign governments

that have entered an Agreement for Cooperation with the U.S. Government concerning the Civil

Uses of Atomic Energy. The purchase request for these SRM's must be made on special forms

obtainable from the Office of Standard Reference Materials, Room B3 1 1 , Chemistry Building,

National Bureau of Standards, Washington, D.C. 20234.

Plutonium Assay Standards

SRM Type Certified for Wt/Units Purity

(grams) (%)

944 Plutonium sulfate tetrahydrate Plutonium Content 0.5 47.50* 945 Plutonium metal, standard matrix .... Impurities 5 (99.9) 949d Plutonium Content 0.5t 99.99

*Stoichiometric

| Nominal weight, each SRM is issued with an individual weight.

(Values in parentheses are not certified, but are given for information only.)

Plutonium Isotopic Standards

SRM Type Wt/Units Atom Percent

(grams) 2 38 Pu 2 3 9 Pu 24 0 pu

241 Pu 242 Pu

946

947 948

Plutonium Sulfate Tetrahydrate

Plutonium Sulfate Tetrahydrate Plutonium Sulfate Tetrahydrate

0.25

.25

.25

0.247

.296

.011

83.128

75.696 91.574

12.069

18.288 7.914

3.991 4.540 0.4680.565

1.180 0.0330 Uranium Assay Standards

SRM Type Certified For Wt/Unit

(grams)

Purity

(%)

950a 960 Uranium Metal Uranium Oxide

Uranium

2526

99.94 (U3 08 ) 99.975 (U)

Uranium Isotopic Standards

Atom Percent SRM Uranium Oxide (U3 08 ) Wt

(grams)

2 34JJ 2 3 5 u2 3 6 u2 3 8 U

U-0002 Depleted 1.0 0.00016 0.01755 <0.00001 99.9823 U-005 Depleted 1.0 .00218 .4895 .0046 99.504 U-010 1.0 .00541 1.0037 .00681 98.984 U-015 1.0 .00850 1.5323 .0164 98.443 U-020 1.0 .0125 2.038 .0165 97.933 U-030 Enriched 1.0 .0190 3.046 .0204 96.915 U-050 1.0 .0279 5.010 .0480 94.915 U-100 1.0 .0676 10.190 .0379 89.704 U-150 Enriched 1.0 .0993 15.307 .0660 84.528 U-200 Enriched 1.0 .1246 20.013 .2116 79.651 U-350 Enriched 1.0 .2498 35.190 .1673 64.393 U-500 Enriched 1.0 .5181 49.696 .0755 49.711 U-750 Enriched 1.0 .5923 75.357 .2499 23.801 U-800 1.0 .6563 80.279 .2445 18.820 U-850 Enriched 1.0 .6437 85.137 .3704 13.848 U-900 Enriched 1.0 .7777 90.196 .3327 8.693 U-930 Enriched 1.0 1.0812 93.336 .2027 5.380 U-970 1.0 1.6653 97.663 .1491 0 5229

52
Neutron Density Standards

These SRM's are provided as reference sources of a cobalt-in-aluminum alloy to serve as a neutron

density monitor wire SRM. Accurate determination of thermal neutron densities is essential in

irradiation tests to obtain a basis for comparison of densities among reactors, in applying data in the

design of reactors, in understanding the mechanisms of radiation damage, and for use in neutron

activation analysis. The wire is 0.5 mm in diameter and is available in four lengths.

Cobalt Content SRM Type Unit (Weight percent)

953 Neutron density monitor wire (Co in Al) 1 meter 0.116 953L1 Neutron density monitor wire (Co in Al) 5 meters .116 953L2 Neutron density monitor wire (Co in Al) 10 meters .116 953L3 Neutron density monitor wire (Co in Al) 25 meters .116 Isotopic Reference Standards

SRM's for isotopic ratio are natural-ratio materials, unless otherwise noted, and are furnished

with a certificate of isotopic composition.

The isotopic composition of these SRM's has been determined by mass spectrometry, by comparison with mixtures prepared from high-purity separated isotopes. They are useful for those

looking for small variations in the isotopic composition of the elements, and for the evaluation of mass discrimination effects encountered in the operation of mass spectrometers.

A description of the methods used in the characterization of the norma! and enriched boric acid,

SRM's 951 and 952, is given in NBS Special Publication 260-17. (See inside of back cover for

ordering instructions.)

SRM Isotopic Reference Standards Element Certified Wt/Unit

(grams)

951 Boron 1.0 952 Boric Acid, 95% Enriched 1 °B Boron 100 975 Chlorine 0.25 976 Copper .25 977 Sodium Bromide Bromine .25 978 Silver Nitrate Silver .25 979 Chromium .25 980 Magnesium .25 *981 Lead 1.0 *982 Lead Metal, Equal Atom (206/208) Lead 1.0 *983 Lead Metal, Radiogenic (92%-206) Lead 1.0 984 i Rubidium Chloride, assay and isotopic Rubidium 0.25 987 Strontium Carbonate, assay and isotopic .... Strontium .25 988 Strontium-84 Spiked, assay and isotopic .... Strontium 10

*Sold as a set only of three 981, 982, and 983

53
Ion Activity Standards

These SRM's are intended for use in the preparation of solutions for the calibration of specificion electrodes. This includes the pH and pD measuring systems.

pH Standards

These SRM's are furnished as crystals for the preparation of solutions of known hydrogen ion

concentration for calibrating and checking the performance of commercially available pH materials

and instruments. They are furnished with certificates giving directions for preparation of the solutions and tables of pH values at various temperatures.

SRM's 1861c and 18611c, 191 and 192, and 922 and 923, are certified for use in admixture only.

At an equimolar (0.025 molal) mixture of SRM's 1861c and 18611c, a pH(S) of 6.863 at 25 °C is obtained. Directions also are furnished for the preparation of a physiological reference solution

from 1861c and 18611c having a pH(S) of 7.4 15 at 25 °C.

pH(S)

(at 25 °C)

Wt/Unit

SRM Type (grams)

185e Potassium Acid Phthalate 4.004 60

1861c Potassium dihydrogen phosphate (6.8631 30

18611c Disodium hydrogen phosphate 1 7.415J 30 187b 9.183 30 188 3.557 60

189 1.679 65

191 10.01 30

192 Sodium carbonate 30 922 Tris(hydroxymethyl)aminomethane 7.699 25 923 Tris(hydroxymethyl)aminomethanehydrochloride 35 pD Standards

These SRM's are furnished as crystals for preparation of solutions of known deuterium-ion

concentration for the calibration and correction of pH indicating equipment to indicate pD data.

SRM's 21861 and 2186II, and 2191 and 2192, are certified for use in admixtures only.

SRM Type

prxs)

Values Wt/Unit

(grams)

2186-1

2186-11 2191 2192

7.43

10.74

30

303030

Ion - Selective Electrodes

These SRM's are certified for the calibration of ion-selective electrodes and have conventional

ionic activities based on the Stokes-Robinson hydration theory for ionic strengths greater than

0. 1 mole per liter. SRM Type Certified Property Wt/Unit

(grams)

2201 pNa, pCl 125 2202 pK, pCl 160

54
Standards of Certified Physical Properties

Mechanical and Metrology Standards

These SRM's are intended to relate measurement units made in industrial, university, and government laboratories to the mechanical and metrological units related through a National Measurement

System 1 to the base units of mass, length, and time.

Coating Thickness Standards

These SRM's have a specimen size of 3 X 3 cm and are for calibrating coating thickness gages of

the magnetic type for the measurement of thickness of nonmagnetic coatings on steel, nickel on

steel, or nickel on nonmagnetic substrates. The steel substrates have the magnetic properties of AIS1

1010 steel and the nickel coatings have the magnetic properties of an annealed, Watts nickel

electrodeposit free of cobalt and iron.

The magnetic type thickness gages are often used to measure the thickness of paint and other

organic coatings on steel, as well as zinc (galvanized) and other nonmagnetic metallic coatings.

SRM's in the 1301 to 1320 series (sets 1351, 1361-64) are used to calibrate these gages. The

number of different thicknesses required for these calibrations depends on the type of gage and the

coating thicknesses to be measured.

The magnetic type thickness gages can be used to estimate magnetic properties of austenitic

stainless steel weld metal. Because the magnetic properties of the weld metal are closely related to the ferrite content of the weld, these instruments are used to estimate the ferrite content. For these

measurements, the coating thickness SRM's 1312— 1319 (as sets 1368—70) are used to calibrate the

instrument. The ferrite contents having magnetic properties similar to those of the various coating

thickness SRM's have been established by other laboratories. For sets 1351 to 1369, the specimens

are mounted on one card. Set 1370 is mounted on two cards, but packed in one box.

SRM's with gold and tin coatings on various substrates have a specimen size of 1 5 X 15 mm and

are for calibrating coating thickness gages of the beta-backscatter type and for calibrating x-ray

fluorescence methods for the measurement of the weight per unit area of gold or tin coatings. For

gold and tin sets, the specimens are mounted on separate cards, but are packed in one box.

The gold coating standards were measured by beta-ray backscatter and x-ray fluorescence techniques relative to NBS gold coating materials for which the average weights per unit area were

determined by weight and area measurements. They are suitable for the direct calibration of

equipment used to measure weight per unit area of gold coating of equivalent purity. From the

density and weight per unit area, the instruments can be calibrated in terms of the thickness of the

standard.

For the tin coating standards, x-ray fluorescence techniques were used to measure the thickness

of the tin coating relative to NBS tin coating material for which the average weights per unit area were determined by weight and area measurements.

ASTM Methods of Measuring Coating Thickness

Instrumental methods of measuring coating thickness are set forth in the following ASTM

Methods of Test. [NOTE: Metric units. ASTM plating specifications use jum and mil, but do not go

to thicknesses greater than about 75 jum: 1 mil = 0.001 inch = 25.4 fim.]

B499 Method of Measurement of Coating Thicknesses by the Magnetic Method; Nonmagnetic Coatings on Magnetic Basis Metals.

B529 Measurement of Coating Thicknesses by the Eddy-Current Test Method: Nonconductive Coatings on Nonmagnetic Basis Metals.

B530 Measurement of Coating Thicknesses by the Magnetic Method: Electrodeposited

Nickel Coatings on Magnetic and Nonmagnetic Substrates.

B504 Measuring the Thickness of Metallic Coatings by the Coulometric Method.

B244 Measuring Thickness of Anodic Coatings on Aluminum with Eddy-Current Instru- ments.

E376 Recommended Practice for Measuring Coating Thickness by Magnetic-Field or Eddy-Current (Electromagnetic) Test Methods.

D1400 Measurement of Dry Film Thickness of Nonmetallic Coatings of Paint, Varnish,

Lacquer, and Related Products Applied on a Nonmagnetic Metal Base. Dl 186 Measurement of Dry Film Thickness of Nonmagnetic Organic Coatings Applied on a Magnetic Base.

1 "Concept of a National Measurement System," Science 158, 67-71 (1967).

55
Nonmagnetic Coatings on Steel, or Nickel on Nonmagnetic Substrate

Nonmagnetic Coating on Magnetic Substrate (Copper and Chromium on Steel)

SRM

(inch)

Nominal Coating Thickness

(metric) (mil) 1301 0.00010 2.54 ^m 0.10

1Vi\Jz im .00025 o./5 jum .25 1303 !00050 1 2 /im 1304 .00075 19 Mm . / J 1305 .0010 25 /im iI .un 1306 .0015 38 Mm 1.5

1 307 .UVJiU f>n?n 51 Mm 2.0 1308 .0025 62 Mm Z.J 1309 .0027 L. 1 1310 .0032 81 Mm 3 7 J.Z 1311 .0055 0.14 mm 5.5 1312 .uuou .23 mm 8.0

i j i j .010 .25 mm 1 A A

10.0

1 314 .015 .38 mm 1 C A J 5.0

1 31 ^ .020 .51 mm OA A

20.0 1316 .025 .62 mm 25.0 1317 .03 .76 mm 30.0 1318 .04 1.0 mm 40.0

1 31 9 .06 1.5 mm OU.U 1320 .08 2.0 mm 80.0 1351 Set of 2 1307 and 1311

1361 Set of 4 1302, 1303, 1305, and 1307 1362 Set of 4 1306, 1310, 1311, and 1312 1363 Set of 4 1313, 1314, 1315, and 1316 1364 Set of 4 1317, 1318, 1319, and 1320 1368 Set of 4 1312, 1313, 1314, and 1315 1369 Set of 4 1316, 1317, 1318, and 1319 1370 Set of 8 1312, 1313, 1314, 1315, 1316, 1317, 1318, an

Magnetic Coating on Magnetic Substrate (Nickel on Steel)

SRM

1331 1332

1333 1334

1335 1336

1337 1338

1339 1352

1353

1365

1366

(inch)

Nominal Coating Thickness

(micrometer)

0.00012

.00035

.00055 .00075

.0010

.0013 .0016 .0020

.0025

Set of 2 Set of 2 Set of 4

Set of 4

3.0

8.9 14

19

253340

5162 1332 and 1334

1335 and 1339

1331, 1332, 1333, and 1334

1335, 1336, 1337, and 1338

Magnetic Coating on Non-Magnetic Substrate (Nickel and Chromium on Brass) SRM Nominal Coating Thickness

(inch) (micrometer)

1341 1342

1343 1344

1345 1346

1367

0.00012

.00035

.00065 .0010

.0015 .0020

Set of 4:

3.0

8.9 16.5 2538

51

(mil)

0.12

.35

.55 .75

1.0

1.3

1.6 2.0

2.5

(mil)

0.12

.35

.65 1.0

1.5 2.0 1341, 1342, 1343, and 1344

56
Gold and Tin Coating Thickness Standards

Gold Coating on Glass Sealing Alloy - ASTM Designation F15; Fe-53, Ni-29, and Co-17. SRM Nominal Coating Weight

(mg/cm 2 )

Nominal Coatii

(micrometers)

lg Thickness

(microinches)

1371 1372

1373

1374

1381 1382

1383 1398

1.5 3.0 6.0 14.0

Set of 2: 1371 and 1372

Set of 2: 1372 and 1373

Set of 2: 1373 and 1374

Set of 4: 1371, 1372, 1373, and

0.8

1.5 3.0

7.1

1374

3060

120 280

Gold Coating on Nickel SRM

1375 1376

1377 1378

1384

1385 1386

1399

Nominal Coating Weight

(mg/cm 2

) Nominal Coating Thickness

(micrometers) (microinches)

1.5 3.0 6.0 17.0

Set of 2: 1375 and 1376

Set of 2: 1376 and 1377

Set of 2: 1377 and 1378

Set of 4: 1375, 1376, 1377, and 1378

0.8

1.5 3.0

8.9

3060

120 350

Gold Coating on Copper-Clad, Glass-Epoxy Laminate

SRM Nominal Coating Weight

(mg/cm 2 )

Nominal Coating Thickness

(micrometers) (microinches)

2301 2302

2303 2304

2305

2306 2307 2308

1.5 3.0 6.0 14.0

Set of 2: 2301 and 2302

Set of 2: 2302 and 2303

Set of 2: 2303 and 2304

Set of 4: 2301, 2302, 2303, and 2304

0.8

1.5 3.0

7.1

3060

120 280

Gold Coating on Copper

SRM

2311 2312

2313

2314

2315 2316

2317 2318

Tin Coating on Steel

Nominal Coating Weight

(mg/cm2

)

1.5 3.0 6.0 14.0

Set of 2: 2311 and 2312

Set of 2: 2312 and 2313

Set of 2: 2313 and 2314

Set of 4: 2311, 2312, 2313, and 2314

Nominal Coating Thickness

(micrometers) (microinches)

0.8

1.5 3.0

7.1

3060

120 280

SRM Nominal Coating Weight Nominal Coating Thickness (mg/cm2

) (micrometers) (microinches) 2331 1.1 1.5 60 2332 2.0 2.8 110 2333 3.0 4.0 160 2334 5.0 7.0 275 2335 12.0 16.5 650

2336 14.0 19.0 750 2338 Set of 2: 2332 and 2335

2339 Set of 4: 2331, 2333, 2334, and 2336 2340 Set of 6: 2331, 2332, 2333, 2334, 2335, and 2336 57
Density Standards

These SRM's are certified with respect to values of density, for air-saturated material at 1 atm, at 20, 25, and 30 °C, to ± 0.00002 g/ml. These SRM's may be used to calibrate picnometers and

density balances. A Certificate is supplied with each of these SRM's. SRM 217b-8S is contained in a special ampoule with an internal breakoff tip, the others are sealed "in vacuum" in plain glass

ampoules.

SRM

Type Approx.d20 Amount, ml

217b-5 2,2,4-Trimethylpentane 0.6918 5 217b-8S .6918 8 217b-25 2,2,4-Trimethylpentane .6918 25 217b-50 .6918 50

Glass Viscosity Standards

SRM's 710, 711, and 717 are furnished as rectangular-shaped bars, and are certified for viscosity

between values of 102 and 10 12 poises. They are furnished to check the performance of hightemperature viscosity equipment (rotating cylinders) and low-temperature viscosity equipment

(fiber elongation). In addition, values are furnished for the softening point, annealing point, and

strain point by ASTM Designations (C338-61 and C336-61). Certificates of Data from participating

laboratories are furnished for each of the three glasses.

SRM's 712, 713, 714, 715, and 716 are furnished in cane, gobs, or patties as listed, and are

certified only for softening point, annealing point, and strain point. Certificates of Data from three

laboratories are furnished for each of these glasses.

SRM Unit of Type Issue

710 Soda-lime silica glass-type 523/586 2 lb 711 3 lb 712 0.5 lb 713 .51b 714 .5 lb 715 200 g 716 250 g 717 500 g

SRM

Viscosity (Poises at Indicated Temperature (° C)

Strain 102 103 104 ioio 1012

Softening Annealing 105 iof> 107 108 109 ion Point Point °C

Point °C

710 1434.3 1181.7 1019.0 905.3 821.5 757.1 706.1 664.7 630.4 601.5 576.9 724 546 504

711 1327.1 1072.8 909.0 794.7 710.4 645.6 594.3 552.7 518.2 489.2 464.5 602 432 392

712 528 386 352

713 738 631 599

714 908 710 662

715 961 764 714

716 794 574 530

717 1545.1 1248.8 1059.4 927.9 831.2 757.1 698.6 651.1 611.9 579.0 550.9 720 516 471

58
Polymer Standards

Four Polymer SRM's are available: Two polystyrenes, one with a narrow 'molecular weight

distribution (SRM 705), the other with a broad distribution (SRM 706), and two polyethylenes,

linear (SRM 1475) and branched (SRM 1476).

These materials are certified for the properties indicated in the table, such as weight and number

average molecular weight, molecular weight distribution, limiting viscosity numbers (intrinsic vis- cosities) in several solvents, density, and melt flow.

These SRM's have wide application not only in the calibration of instruments used in polymer

characterization, such as light scattering photometers, osmometers, gel permeation chromatographs,

but also wherever a well characterized polymer material is needed, as for example in studies of

dilute solution behavior, rheology, and polymer crystal physics.

The certificate for SRM 1475 is accompanied by a series of papers, reprinted from the Journal of

Research of the National Bureau of Standards, which describe how the measurements were obtained.

SRM Type Wt/Unit

(grams)

705

706

1475 1476

Polystyrene, narrow molecular weight distribution, Mw « 179,000, Mw/Mn * 1.07 Polystyrene, broad molecular weight distribution, Mw « 258,000, MJMn * 2.1 Polyethylene, linear, Mw « 52,000, Mw/Mn

= 2.9 Polyethylene, branched.

5

1850

50

The following table lists the properties (and method) certified for these SRM's.

Property (and method) 705 706 1475 1476

Molecular Weight

Weight Average (Light Scattering) X X X

(Sedimentation Equilibrium) X X

(Gel Permeation Chromatography-GPC) X

Number Average (Osmometry) X

(GPC) X

Molecular Weight Distribution (GPC) X

Limiting Viscosity Number (Capillary Viscometer) Benzene 25 °C X X

Benzene 35 °C X

Cyclohexane 35 °C X X

1-Chloronaphthalene 130°C X X

1,2,4-trichlorobenzene 130 "C X X

Decahydronapthalene 130 °C X X

Melt Flow (ASTM) X X

Density (ASTM) X X

Elasticity Standards

This SRM is polycrystalline alumina prepared from a single block of material by isostatically cold

pressing and then sintering alumina powder containing 0.1 percent magnesium oxide. It is intended

for the calibration of apparatus used in the measurement of resonance frequencies from which

elastic moduli are calculated. Each bar has been individually measured and calibrated, and all surfaces were machined flat and parallel.

SRM I Type Size

718 I Polycrystaline Alumina I 12.7 X 1.27 X 0.32 cm

59
Heat Standards

These SRM's are intended to relate heat and temperature measurements made in industrial,

university, and government laboratories with the International Practical Temperature Scale-1968 1

.

Superconductive Thermometric Fixed Point Devices

The SRM is a device composed of small cylinders of high purity lead, indium, aluminum, zinc,

and cadmium mounted in a threaded copper stud and enclosed by a mutual inductance coil set. It provides convenient temperature calibrations in the range 0.5 - 7 K with precision of ± 0.001 K. It should prove particularly valuable to users of 3 He-4 He dilution refrigerators, in which direct calibrations on the liquid helium vapor pressure-temperature scales are difficult, and to those who wish to determine the temperature reproducibility of physical phenomena or of cryogenic equipment.

SRM Type Element Nominal Temperature no

767 Superconductive Thermometric Fixed Point Device Lead 7.2 Indium 3.4 Aluminum 1.2 Zinc 0.8 Cadmium .5

Freezing Point Standards

Defining Fixed Points — International Practical

Temperature Scale

These SRM's are of such purity that they are suitable for defining fixed points for the Inter- national Practical Temperature Scale of 1968. 1

Temperature Wt/Unit

SRM Type C (grams)

740 Zinc 419.58 350 741 Tin 231.9681 350

Determined Reference Points

These SRM's are intended for use in calibration of thermometers, thermocouples, and other

temperature measuring devices. The temperatures certified are in accord with the International

Practical Temperature Scale of 1968.

Temperature Wt/Unit

SRM Type C ( grams)

42g Tin 231.967 350 43h Zinc 419.58* 350 44f Aluminum 660.3 200 45d Copper 1084.8 450

49 e Lead 327.493 600

* SRM 43h is less pure than SRM 740 and has a freezing point 0.001 C lower.

1 "International Practical Temperature Scale of 1968," Metrologia, 5 35-44 (1969).

60
Melting Point Standard

This SRM is calcined alpha alumina the purity of which (99.9+ percent) makes it a suitable

pyrometric standard for melting point on the International Practical Temperature Scale of 1968.

SRM Type Temperature °C Wt/Unit

(grams)

742 Alumina .... 2053 10

Calorimetric Standards

These SRM's are intended to relate the gain or loss of energy and work experienced during a chemical reaction or by change of temperature to the units of energy and work as defined by the

National Measurement System. This system uses the units prescribed by the International System of

Units (SI). The unit for energy and work under this system is the joule, which is related to the

historically defined calorie by the equation: 4.184 joule = 1 calorie.

Combustion Calorimetric Standards

These SRM's are issued primarily to check the performance of calorimetric methods for the

determination of the heat of combustion. SRM 217b-8S is contained in a special ampoule with an

internal break-off tip, the others are sealed "in vacuum" in plain glass ampoules.

SRM Type Unit Amount

39i Benzoic acid, 26.434 absolute kilojoules/gram .... 30 g 217b-5 2,2,4-Trimethylpentane, 47.713

5 ml

217b-8S 8 ml

217b-25 25 ml

217b-50 50 ml

Solution Calorimetric Standards

These SRM's are issued primarily to check the performance of calorimetric methods used for the

determination of heats of solution and heats of reactions in solution.

SRM Type Wt/Unit

(grams)

724 50 1654 a-Quartz for HF acid solution calorimetry .... 25

Heat Source Calorimetric Standards

Wt/Unit

SRM Type (grams) 1651 Zirconium-barium chromate heat 50

1652 Zirconium-barium chromate heat 50 1653 Zirconium-barium chromate heat 50

6

1
Enthalpy and Heat Capacity Standards

This SRM has been certified for enthalpy and heat capacity of 99.95+ percent a-alumina over a temperature range from 273.15 to 2250 K.

Wt/Unit

.SRM Type (grams) 720 Sapphire, synthetic (A1 2 03 ) 15 g

Differential Thermal Analysis Standards

The first two of these SRM's, 755 and 756, were issued upon the recommendation of the

International Confederation of Thermal Analysis (ICTA) as standards for checking the performance

of differential thermal analysis equipment. SRM's 758, 759, and 760 have been issued by NBS in

cooperation with ICTA as standards for calibrating differential thermal analysis and related thermoanalytical equipment under operating conditions. SRM's 758, 759, and 760 comprise a total of

eight inorganic substances and two metals.

SRM Type Temperature/Range

rc)

Unit of Issue

755 Quartz Si02 575 2g

756 Potassium Nitrate 130 5g

758 DTA Temperature Standard .... 125435 Set of 5 (See below) 759 DTA Temperature Standard .... 295-675 Set of 5 (See below)

760 DTA Temperature Standard .... 570-940 Set of 5 (See below)

758

(125-435 O

KN03 In (Metal) Sn (Metal) KCIO. Ag2 S04

759

(295-675 °C)

KC104 Ag2 S&4 SiO,

K2 SO,

K,CrO.

760

(570-940 °C)

SiO,

K2 SO,

K2 CrO< BaC03 SrCO,

Peak Temp.

°C

135

159 237 309 433

574 588

673

819 938

Vapor Pressure Standards

Wt(g)

10

3

310

331010

10

10

These SRM's are intended for use in the testing and calibration of vapor pressure measurement

apparatus and techniques. The materials ultimately will include gold, cadmium, platinum, silver, and

tungsten, and will cover a temperature range of 600 to 3,000 K.

SRM Type

Pressure Range

(atmosphere)

Temperature Range

(K) Unit Size

745

746

747

748

749

Gold

Cadmium ....

Platinum ....

Silver Tungsten ....

10"3 to 10"8 lO-4 to 10"11 1300- 2100

350- 594

Wire 1.44 mm X 152 mm

Rod 6.4 mm X 64 mm

IN PREP

Rod 6.4 mm X 64 mm

IN PREP

10"3 to 10"12 800- 1600

I

6 2
Thermal Conductivity Standards

These SRM's cover the high, medium, and low conductivity ranges. They will be useful for

intercomparing thermal conductivity apparatus, debugging new apparatus, and calibrating comparative apparatus.

SRM Tvoe Temperature Range Diameter Length

(K) (mm) (mm)

734-S Electrolytic Iron .... 6-280 6.4 305

734-L1 Electrolytic Iron .... 6-280 31.8 152 734-L2 Electrolytic Iron .... 6-280 31.8 305

735-S Stainless Steel 5-280 6.5 300 735-M1 Stainless Steel 5-280 12.5 150 735-M2 Stainless Steel 5-280 12.5 300

735-L1 Stainless Steel 5-280 35 50 735-L2 Stainless Steel 5-280 35 100

Thermal Expansion Standards

These SRM's cover the temperature range from 20 to 1900 K having coefficients of thermal

expansion over the range of 0.5 to 25 X 10-6/K.

SRM Type Temperature Range Diameter Length

(K) (mm) (mm)

731-L1 Borosilicate Glass 80-680 6.4 51 731-L2 Borosilicate Glass 80-680 6.4 102

731-L3 80-680 6.4 152

732-L1 Sapphire IN PREP

732-L2 IN PREP

732-L3 IN PREP

736-L1 Copper 20-800 6.4 51 736-L2 Copper 20-800 6.4 102 736-L3 Copper 20-800 6.4 152

737-L1 Tungsten IN PREP

737-L2 Tungsten IN PREP

737-L3 IN PREP

739-L1 80-1000 6.4 51 739-L2 Fused Silica 80-1000 6.4 102 739-L3 80-1000 6.4 152

Thermocouple Materials

This SRM is intended to serve as a convenient mechanism for the comparison of manufactured

wire to standard reference thermocouple tables. SRM

733

Type

Silver-28 Atomic Percent Gold

Form

Wire: 32AWG(0.2019 mm) diameter

3 meters long

63
Magnetic Standards

Magnetic Susceptibility Standards

These SRM's are intended for use in the calibration of instruments used to measure magnetic

susceptibility. The susceptibility values shown are nominal for 297 K.

SRM Type

763-1 763-2 763-3 Aluminum

764-1 764-2

765-1 765-2

765-3

766-1

Gram

Susceptibility

x.cm'-g" 1

0.605 X 10"°

0.990 X 10-6

5.25 X 10"6

123.5 X 10"6

Volume

Susceptibility k

1.63 X 10'6

21.2 X 10-6

63.1 X 10-6

484 X 10-6

Form/Unit

Cylinder Wire Rod

Cylinder Wire

Cylinder Wire Sponge

Cube

3 mm diameter X 3 mm

0.5 mm_ diameter x 250 mm

6 mm diameter X 175 mm

3 mm diameter X 3 mm

0.5 mm diameter x 50 mm

3 mm diameter X 3 mm

0.5 mm diameter x 50 mm

1 gram 3X3X3 mm

*At 77.7K, Gram Susceptibility for SRM 763 : x = 0.695 X 10"6 cm 3 'g"
Optical Standards

Spectrophotometric Standards

Color Standards for

Spectrophotometer-Tristimulus Integrator Systems

This SRM is a set of 5 transparent colored glass filters to check the performance of

spectrophotometer-tristimulus integrator systems, the automatic recording and computing devices

used in routine color measurements. Each glass filter is 2-inches (5 cm) square (approximately

3.0 mm thick) with polished faces. A chart of tristimulus values for CIE sources A, B, and C,

representing incandescent-lamp light, noon sunlight, and average daylight; and a detailed report on

the changes in tristimulus values caused by errors in the 100-percent and zero adjustments of the

photometric scale, wavelength errors, slit-width errors, errors due to stray energy, and inertia errors of the recording mechanisms are furnished with each set of glasses. Through the use of these filters the user of a spectrophotometer-integrator combination will be able to determine when the instrument goes out of adjustment. From the pattern of the discrepancies between measured and reported

tristimulus values, he will also be able to obtain some clue as to the type of maladjustment.

This SRM is available only as a set of five filters.

SRM

Type Unit Size

2101 Orange-red glass Supplied only as a 2102 set - one each of 2103 5 filters 2104

2105 Selective neutral glass

Glass and Liquid Filters for Spectrophotometry

These SRM's are intended primarily for use in checking the accuracy of the photometric scale of

spectrophotometers and to provide a means of interlaboratory comparisons of spectrophotometric

data.

The Glass Filters, SRM 930a, consists of three filters having transmittances of approximately 10,

20, and 30 percent. Each filter is individually calibrated and certified for absorbance and transmittance over a spectral wavelength range from 440 to 635 nanometers.

The Liquid Filters, SRM 931, are absorbance standards for use in ultraviolet and visible spectrophotometry. This SRM consists of three sets of four vials containing approximately 10 ml of

solution. Each set contains a "Blank" and three concentrations of the liquid filter. The net absorb- ance of these filters are certified at 302, 395, 512, and 678 nanometers.

SRM Type Unit of Issue

930a Set of 3 filters 931 Liquid Absorbance Standards for Ultraviolet 3 Sets of 4 vials

65
Thermal Emittance Standards

SRM's of normal spectral emittance are available in three materials, platinum- 13 percent rhodium

alloy having low emittance, sandblasted and oxidized Kanthal (an iron-chromium-aluminum alloy)

having intermediate emittance, and sandblasted and oxidized Inconel (a nickel-chromium-iron alloy)

having high emittance. SRM's of all three materials have been calibrated for normal spectral emittance at 800 and 1 100 K; the Kanthal and Inconel standards at 1300 K and the platinum-13 percent

rhodium at 1400 and 1600 K. Normal spectral emittance data is supplied at 156 wavelengths in the one to fifteen micron range for all the combinations listed above. In addition, data for the

platinum-13 percent rhodium SRM's is supplied in the fifteen to thirty-five micron range at 1 100 K.

CD Vf Type Unit size

1402 1/2 in disks Pt-13% Rh

1403 Emittance standards 7/8 in disks Pt-13% Rh

1404 1 in disks Pt-13% Rh

1405 Emittance standards 1 1/8 in disks Pt-13% Rh

1406 1 1/4 in disks Pt-13% Rh

1407 Emittance standards 2 in x 2 in squares Pt-13% Rh

1408 Emittance standards 1 in x 10 in strips Pt-13% Rh

1409 3/4 in x 10 in strips Pt-13% Rh

1420 Emittance standards 1/2 in disks Kanthal 1421 Emittance standards 7/8 in disks Kanthal 1422 . 1 in disks Kanthal 1423 1 1/8 in disks Kanthal 1424 1 1/4 in disks Kanthal 1425 2 in x 2 in squares Kanthal 1427 Emittance standards 3/4 in x 10 in strips Kanthal 1428 Emittance standards 1/4 in x 8 in strips Kanthal 1440 Emittance standards 1/2 in disks Inconel 1441 Emittance standards 7/8 in disks Inconel 1442 1 in disks Inconel 1443 1 1/8 in disks Inconel 1444 1 1/4 in disks Inconel 1445 Emittance standards 2 in x 2 in squares Inconel

Refractive Index Standards

These SRM's are certified for refractive index for each of seven wavelengths: helium 668 and

502, hydrogen 656(C) and 486(F), mercury 546(e) and 436(g), and sodium 589(D,,D2 ) at 20, 25,

and 30 °C to ±0.00002. A certificate is supplied with each of these samples. 217b-8S is contained in a special ampoule with an internal breakoff tip, the others are sealed "in vacuum" in plain glass

ampoules.

SRM

Type 20

Approx. n jj

Quantity

(ml)

217b-5 2,2,4-Trimethylpentane 1.3915 5 217b-8S 1.3915 8 217b-25 2,2,4-Trimethylpentane 1.3915 25 217b-50 2,2,4-Trimethylpentane 1.3915 50

These standards are also certified for density.

66
Reflectance Standards

These SRM's are intended primarily for calibration of (1) reflectometers used in the evaluation of

the appearance properties of polished metals and metal plated objects, and (2) reflectometers and

other equipment used in the evaluation of thermal radiation properties of materials. These properties are of particular importance in the automotive and aerospace industries, although they also

have many other applications.

The SRM's are mirrors produced by vacuum deposition of gold on glass and aluminum on glass,

and are calibrated for near-normal (9°) specular reflectance. They are certified in terms of absolute

reflectance over the wavelength range from 0.25 to 30 micrometers.

Specular Spectral Reflectance Standards

SRM Type Blank Size (cm) Coated Area Size (cm)

2001 2002

2003

2005 2006

2007 2008

Aluminum on Glass Aluminum on Glass Aluminum on Glass Gold on Glass Gold on Glass Gold on Glass Gold on Glass

7.6 X 10.2 X 1.9 3.8 X 3.8 X 1.3 Disk 2.9 dia. X 1.0

7.6 X 10.2 X 1.9 3.8 X 3.8 X 1.3 Disk 2.9 dia. X 1.0 Disk 2.4 dia. X 0.6

entire surface

entire surface

entire surface

5.1 X 7.6

2.5 X 2.5

5.2 X 7.6

2.5 X 2.5
Radioactivity Standards

Information concerning the SRM appears on it or its container. A Certificate containing pertinent

information on the SRM is sent under separate cover; a photocopy of the certificate is sent with the

SRM. Copies of these Certificates and information concerning the applications of these SRM's are

available on request to the NBS Office of Standard Reference Materials. These Materials (except the

carbon- 14 contemporary dating standard) are shipped only by express or air freight (shipping

charges collect). The prices of SRM's may change as current stocks are depleted and are replaced.

Purchasers will be billed at the prices in effect at the time of shipment.

Certain Radioactivity SRM's are not economical to maintain in stock because of short half lives and low demand. When sufficient demand for them exists, based on letters of inquiry, these SRM's

are renewed and those who have expressed an interest in them are notified of their availability. If you need radioactivity standards other than those listed below, or additional technical information on the listed Radioactivity SRM's, please contact the Radioactivity Section, Room CI 14,

Radiation Physics Building, National Bureau of Standards, Washington, D.C. 20234. (Telephone

301-921-2668). NOTE: Chemically stable solutions of most radionuclides, including those no

longer issued by NBS or that are currently out of stock, may be submitted to NBS for calibration as described in "Calibration and Test Services of the National Bureau of Standards," NBS Special

Publication 250. Requests for these tests should be submitted, with full source information for

approval of suitability, to the Radioactivity Section.

The stated accuracies of the older standards are, in general, an estimate of the standard deviation

added to an estimate of maximum possible systematic error. The accuracies of more recent standards are based on the 99 percent confidence level of precision, with the same estimate of systematic

error. The International Commission on Radiation Units (ICRU) recommended definition of the activity (A) of a quantity of a radioactive nuclide is the quotient of AN by At, where AN is the

number of nuclear transformations that occur in this quantity, in time At: (A=AN/At). NBS uses the

abbreviation ntps for nuclear transformation per second. In this list both ntps and dps are used; the

latter when dps has been used in certificates printed before 1968. The terms: aps, /Tps, j3+ps, K-x-rays ps, 7ps are used for the emission rates of alpha particles, beta particles, positrons, K-x-rays,

and gamma-rays, respectively.

The SRM's listed below, not marked with an asterisk (*), may be ordered singly, without a

license, under the general licensing provisions of the Atomic Energy Act of 1954. Those marked by

an asterisk are available only under the special licensing provisions of the Atomic Energy Act of

1954.

Alpha-Particle Standards

These SRM's consist of a practically weightless deposit of the nuclide on a thin platinum foil cemented to a monel disk.

SRM

Radionuclide Approximate Activity at Time of

Calibration (Month, Year)

Accuracy

(%)

M900

*4901

+ 4902

*4906

4904-D

4907

Polonium-210

Polonium-210

Polonium-210

Americium-241

Gadolinium-148

100 aps 200 aps 500 aps

1.4 X 103 to 3.4 X 10" ntps (4/69)

2 X 10 3 to 5 X 104 ntps (2/70) IN PREP

±0.8

1.0

+ Available on Request

68
Beta-Ray and Gamma-Ray Gas Standards

These SRM's contain the Radionuclide in the inactive gas at a pressure of about one atmosphere

in a glass break-seal ampoule.

SRM Radionuclide Approximate Activity at Time of

Calibration (Month, Year)

Accuracy

(%)

4935-C

4235

4236

4306

4307

Krypton-85

Krypton-85 Xenon-1 33 Xenon-133

Xenon-133

7 X 10 7 ntps per mole (7/69)±

1 to 2 X 10 7 ntps (per source) (9/69) IN PRFP

IN PREP

IN PREP

3t

3.8f

4300

4301 4302

4303

4304

4305

Argon-37

Argon-37

Argon-39

Argon-39 Xenon- 131m

Xenon-131m

4 X 10 6 ntps per mole (5/72) 4 X 10 3 ntps per mole (5/72) IN PREP

IN PREP

IN PREP

IN PREP

4.3

5.8

t These are provisional accuracies. When the final accuracies are determined, previous purchasers will be notified.

Beta-Ray, Gamma-Ray, and Electron- Capture Solution Standards

These standard reference materials are contained in flame-sealed ampoules.

Approximate Activity Approx.

SRM or Emission Rate per gram of Weight Accuracy

| Radionuclide Solution at Time of Calibration of Solution (%)

(Month, Year) (gram)

4925 Carbon-14 (benzoic acid in toluene) 2 X 104 dps (7/58) 3 ±2.0 4222 Carbon-14 (n-hexadecane) 4 X 104 dps (6/67) 3 3.1 4223 4 X 10 3 dps (6/67) 3 3.1 4224 4 X 102 dps (6/67) 3 3.1 4943 1 X 10" /Tps(1962) 3 2.0 494 1-C Cobalt-57 3 X 10s ntps (3/69) 5.2 1.0 4926 9 X 10 3 dps (9/61) 25 1.0 4927 Hydrogen-3 (Water) 9 X 10 s dps (9/61) 3 1.0 4947 Hydrogen-3 (Tritiated toluene) . . . 3 X 10 s dps (2/64) 4 1.0 4929-C 2 X 10" K-x-rays ps (4/70) 3.9 2.7 *4226 Nickel-63 1.5 X 106 ntps (5/68) 4.1 1.0 4940-B Promethium-147 5 X 104 dps (11/67) 3 1.9 *4228 Selenium-75 2.5 X 10 s ntps (3/71) 4.6 2.3 4921-C 1 X 10" (f ps (8/64) 2.8 1.0 4922-E 2 X 10 s & ps (3/67) 5.1 1.4 4229 Aluminum-26 39 ntps (11/71) 4.6 4230 IN PREP

4232 Silver-llOm IN PREP

4245 Carbon-14 (Na2 C03 in H2 0) 10 juCi (1972) 5 4246 Carbon-14 (Na2 C03 in H2 0) .... 1 MCi (1972) 5 4247 Carbon-14 (Na2 C03 in H2 0) .... 0.01 MCi (1972) 5 4949 Iodine- 129 IN PREP

4231 Cobalt-56 IN PREP

4233 Cesium-137-Barium-137m IN PREP

4234 IN PREP

Contemporary Standard for Carbon-14 Dating Laboratories

SRM Description

4990-B Oxalic acid; no specific activity is given. (One pound of oxalic acid taken from specially prepared

material for use as a common contemporary standard against which world-wide measurements can

be compared.)

NOTE: These SRM's are shipped parcel post, prepaid to domestic and overseas purchasers.

69
Environmental Standards

Mixed-radionuclide gamma-ray emission-rate standards have been issued for monitoring radioactive effluents of nuclear-power reactors. ,„„

' . These SRM's contain: Cadmium-109, Cobalt-57, Tin-1 13-Indium-l 13m, Cesium-137-Banum-137,

Manganese-54, Cobalt-60, and Yttrium-88.

SRM Type

Approximate Activity

(month/ year)

Unit

(ml)

4242-B Mixed Radionuclides .... 0.5 (id total ( 1/72) 450 4242-B Mixed Radionuclides .... 1 fiCi total (1/72) 50 4244-B Mixed Radionuclides .... 10 3 yps total ( 1/72) 15 4252 Mixed Radionuclides .... Test Standard 450 4253 Mixed Radionuclides .... Test Standard 50

Gamma-Ray "Point-Source" Standards

This group of Standard Reference Materials is usually prepared by depositing the radioactive

material and sealing it between two layers of polyester tape, mounted on an aluminum ring.

Exceptions to this procedure are americium, krypton, and thorium SRM's. The americium-241

SRM's, 4211 and 4213, are prepared by electroplating americium onto a 0.010-cm thick platinum

foil, which is covered with a 0.005-cm thick aluminum foil. The aluminum-covered source is sandwiched between two layers of 0.036-cm thick polyurethane film tape. The krypton-85 SRM,

4212, is prepared by sealing a krypton-85 impregnated aluminum foil between two glass disks, with

an epoxy adhesive. The thorium-228 SRM's, 4205 and 4206, are prepared by depositing and sealing

the radionuclide between two layers of gold foil and this sandwich is then sealed between two

double layers of polyurethane-film tape.

SRM

4211

*4213 4202

*4212

4200-B

4207

4201-B

*4203

*4210

4991-C

4996-B 4205

4206

4240

4214

4215

4216

Radionuclide

Americium-241 ....

Americium-241 .... Cadmium-109

Krypton-85

Cesium-137

Cesium-137

Niobium-94

Cobalt-60

Cobalt-60 Sodium-22

Sodium-22

Thorium-228

Thorium-228

Bismuth-207

Cobalt-57 Mixed Radionuclides Mixed Radionuclides

Gamma-Ray

Energy

(MeV)

Approximate Activity

(ntps)

at Time of Calibration (month, year)

Accuracy

(%)

0.060

0.060

0.088

0.514

0.662

4.0 to 18 X 10" (2/70)

1.9 to 4.1 X 10 s (2/70)

2 X 106 (12/67)

6.5 to 37 X 106 (5/71)

7 X 104 (12/68)

±2.8

2.8

1.8 2.6

1.3

0.662

0.702, 0.871 IN PREP

1.173, 1.332

1.274

5X 10 s (12/68) 4 to 6 X 103 (4/70)

2 X 106 (4/69) 6 X 104 (4/69)

1.3

1.5

1.1 1.5

1.274 2.614

2.614 IN PREP

IN PREP

3 X 10 s (4/69) 6 X 104 (8/68) 6 X 10 5 (8/68)

1.5 2.2

2.2

IN PREP

IN PREP

70
Radium Gamma-Ray Solution Standards

These samples are contained in flame-sealed glass ampoules.

Radium Content Accuracy

SRM (in micrograms) (%)

4955 0.1 ±3.6 4956 0.2 4.4 4957 0.5 1.8 4958 1.0 1.8 4959 2.0 1.3 4960 5.0 1.3 4961 10 1.1 4962 20 1.1 4963 50 1.1 4964-B 102 0.5

Radium Solution Standards for Radon Analysis

These samples are contained in flame-sealed glass ampoules.

SRM

Approximate Radium

Content (gram)

Approx. Wt.

Soln. (grams)

Accuracy

(%)

4951 10" 100 ±0.3 4950-B 10"9 20 1.0 4953 10" 20 1.0

Metallurgical Standards

These SRM's are intended for calibrating x-ray diffraction equipment to determine the relative

amounts of austenite and iron carbide in steel. SRM Type Form

485

493

Austenite in Ferrite (4% nominal)

Spheroidized Iron Carbide (Fe 3 C) in Ferrite ....

Disk: 20.6 mm Diameter, 2.5 mm thick Wafer: 29 X 29 X 2.4 mm

Mossbauer Standards

These SRM's are issued for the calibration of the isomer shift of iron compounds and alloys and

to provide a uniform basis for presentation of mossbauer isomer shift data.

SRM Type Form

725

1541

Sodium Pentacyanonitrosylferrite II (Sodium Nitroprusside) Platelet: 1 x 1 x0.0775 cm

Foil: 2.5 cm X 2.5 cm X 23 fim

71
Permittivity Standards

The three solution SRM's (1511, 1512, and 1513) are for calibrating cells and test capacitors

used to determine the relative permittivity (dielectric constant) of liquids. The nominal dielectric

constants (e) for SRM's 1511, 1512, and 1513 are: 2.0, 10.4, and 35.7, respectively. The four

polymer SRM's (1516, 1517, 1518, and 1519) are for calibrating systems used to measure permittivity and related dielectric quantities. These SRM's are disks of a fluorinated ethylene-propylene

copolymer and are individually calibrated.

SRM Type Unit Size

1511 400 ml 1512 400 ml

1513 400 ml

1516 38 mm diameter 2.5 mm thick 1517 Permittivity 38 mm diameter 5 mm thick 1518 Permittivity 51 mm diameter 2.5 mm thick 1519 Permittivity 5 1 mm diameter 5 mm thick

I

72
Engineering Type Standards

These SRM's are intended to relate measurements used for production or quality control data to

a central point of reference. The values certified for these materials are in some cases empirical and

do not necessarily relate to the National Measurement System.

Standard Rubbers and Rubber-Compounding Material

These SRM's have been prepared to provide the rubber industry with standard materials for

rubber compounding. They are useful for the testing of rubber and rubber-compounding materials

in connection with quality control of raw materials and for the standardization of rubber testing.

Each material has been statistically evaluated for uniformity by mixing rubber compounds and

vulcanizing them in accordance with ASTM Designation D-15 and determining the stress-strain

properties of the resulting vulcanizates. Certificates are issued for the rubbers because the properties

of different lots are not the same. Replacement lots of rubber-compounding SRM's impart essentially the same characteristics to rubber vulcanizates so that Certificates are not issued for these

SRM's.

Standard Rubbers

SRM Type Wt/Unit

(grams)

385b 34,000

386g Styrene-butadiene 1500 .... 34,000 388f Butyl 34,000 389 Styrene-butadiene 1503 .... 34,000

391 Acrylonitrile-butadiene .... 25,000

Rubber Compounding Materials

SRM Type Wt/Unit

(grams)

370d 8,000 371f Sulfur 6,000

372g Stearic Acid 3,200 373f Benzothiazyl disulfide 2,000 374c 2,000 375f 28,000 376a 450

377 600

378a 28,000 379 5,500

380 Calcium Carbonate 6,000 381 Calcium Silicate 4,000 382a 32,000 383 3,200 384a N-tertiary-Butyl-2-benzothiazolesulfenamide .... 3,200

Reference Magnetic Tapes

This SRM is intended for use in evaluating the performance of magnetic computer tapes and

maintaining control over their production. Each SRM is individually calibrated and certified.

SRM Type Unit of Issue

3200 Secondary standard magnetic tape computer

Reel/600 ft

73
Sizing Standards

Glass Spheres for Particle Size

SRM Type

Size (Mm) Sieve Nos. Wt/Unit

(grams) 1003

1004

1017a 1018a 1019

Calibrated Glass Beads

Calibrated Glass Beads

Turbidimetric and Fii

5-30 34-120 100-310 225-780

890-2590

leness Standa

400-140

140-50 60-25

18-8

rd (Cement

40-45 63

84 74

100

)

This SRM is available to calibrate the Blaine fineness meter according to the latest issue of

Federal Test Method Standard 158, Method 2101 or ASTM Designation C204; to calibrate the

Wagner turbidimeter according to ASTM Designation CI 15; and to determine sieve residue according to ASTM Designation C430. Each set consists of twenty sealed vials, each containing approximately 10 grams of cement. This SRM -is supplied only in sets of twenty vials or multiples thereof.

SRM Type Certification Unit 114m Portland Cement Residue on No. 325 sieve, electroformed Set of wet method 20 vials

Surface area (Wagner turbidimeter) Surface area (Air-permeability) Mean particle diameter (Air-permeability)

Color Standards

The ISCC-NBS Centroid Color Charts

SRM 2106, ISCC-NBS Centroid Color Charts, is available to illustrate a characteristic color for

each of the ISCC-NBS color-name blocks in NBS Circular 553. NBS Circular 553, The ISCC-NBS

Method of Designating Colors and a Dictionary of Color Names, may be purchased from the

Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402, for $2

(SD Catalog No. C13.4:553). SRM 2106, along with the table containing the history of the color- names project, the centroid number, and the Munsell denotation of each of the 25 1 color chips

included, constitutes a supplement to NBS Circular 553. Each chart set contains 18 constant-hue

centroid color charts. These centroid colors represent a systematic sampling of the whole color

solid, each color of which has been carefully measured. Each centroid color has its own specification and can be used as a color standard. The centroid color charts can also be used for approximate

color specifications wherever the ISCC-NBS color designations are applicable, for statistical studies

of trends in industrial color usage, or for planning lines of merchandise intended to have coordinated colors.

SRM Type Unit of Issue

2106 Set of 18 charts

Paint Pigment Standards for

Color and Tinting Strength

SRM Wt/Unit

Type (grams) 307 60

74
light-Sensitive Papers

and Plastic Chips

Light-Sensitive Papers

Standard light-sensitive paper and booklets of standard faded strips of this paper are available for use in standardizing the dosage of radiant energy when testing textiles for color fastness by ex- posure in commercial carbon-arc fading lamps. The paper is distributed in units of 100 pieces 2 5/8

by 3 1/4 in. The booklets contain six strips of the paper 1 1/4 in wide that have been faded by

exposure in the NBS master lamp. A copy of NBS Misc. Publ. 260-41, which describes the preparation and use of the materials, is furnished with each booklet.

SRM Type Unit of Issue

700c Light-sensitive paper Pkg. of 100 pieces - 2 5/8 in x 3 1/4 in 701c Standard faded strips .... Booklet - 6 strips 1 1/4 in wide

Light-Sensitive Plastic Chips

Standard light-sensitive plastic chips are available for use in calibration and standardization of

artificial weathering and fading apparatus. These chips are distributed in two thicknesses (0.060 and

0.124 in) in units of five plates 2 in by 4 1/8 in, and have been standardized by the measurement of

the change of transmittance as a function of exposure (in standard fading hours) to the NBS master

lamps.

SRM / Type Unit of Issue

702 Light-sensitive plastic chips .

.

Package of 5 chips 0.124 in thick 703 Light-sensitive plastic chips .

.

Package of 5 chips 0.060 in thick

Photographic Standards

SRM's 1008 and 1009 are calibrated photographic step tablets of 21 steps that cover the optical

density range from 0 to 4 and 0 to 3, respectively.

These step tablets are designated as Type Visual Vl-b and are certified for diffuse transmission

density in conformance with conditions specified for American National Standard Diffuse Visual

Density, Type Vl-b "ANSI PH2. 19-1959, American National Standard Diffuse Transmission Density." The 21 steps of the 3.5 X 25 cm tablets cover the density range from 0 to 4 (1008) or 0 to 3

(1009) and are individually certified by a method having a precision such that three times the

standard deviation of the mean is 1 percent or 0.01, whichever is greater.

SRM 1010a, Microcopy Resolution Test Charts, is used to test the resolving power of cameras or of whole microcopying systems. SRM 1010a consists of five charts printed photographically on

paper, and have 26 high-contrast five-line patterns ranging in spatial frequency from one cycle per

millimeter to 1 8 cycles per millimeter. Instructions for the use of the charts are supplied with each

order.

SRM Type Unit of Issue

1008

1009

1010a

Photographic Step Tablet (0-4) Photographic Step Tablet (0-3)

1 tablet, 21 steps

1 tablet, 21 steps Set of 5 charts Surface Flammability Standard

SRM 1002b, Hardboard Sheet, is issued for checking the operation of radiant panel test equipment in accordance with the procedures outlined in ASTM Standard El 62-67. Flame Spread Index,

I s = 190; Heat Evolution Factor, Q = 45.4.

SRM Type Certification Unit of Issue

1002b Hardboard Sheet .... Flame Spread Index 190 Set of 4 Heat Evolution Factor, Q 45.4 6 X 18 X 1/4 inch

75
Smoke Density Chamber Standards

These SRM's are certified for maximum specific optical density and are issued for performing

operational checks of smoke density chambers.

SRM Type

Maximum Specific

Optical Density Unit of Issue

1006

1007

Non-flaming Exposure Condition (a-cellulose)

Flaming Exposure Condition (plastic)

Dm(corr) = 170

Dm(corr) = 455

Set of 3 sheets 11.7 X 9.2 inches

Set of 3 sheets 9.5 X 9.2 inches

Water Vapor Permeance

This material is intended for use in the measurement of water vapor permeance in accordance

with ASTM Method D-96. It may also be useful in other test methods where movement of water

vapor across a barrier is involved. These SRM's are made from sheets of poly (ethylene

terephthalate) approximately 0.001 inches thick (25.4 fxm). They are certified for water vapor

permeance for both dry cup and wet cup procedure.

SRM Type Certification Unit of Issue

707-1

707-2

Water Vapor Permeance

Water Vapor Permeance

Dry Cup — 0.66 perm Wet Cup - 0.72 perm

12 sheets, 6 in diameter

6 sheets, 10 X 12 inches

Internal Tearing Resistance Standard Paper

This SRM is available for calibration of instruments used for the determination of the internal

tearing resistance of paper according to methods ASTM Designation D689 and TAPPI Standard

T414. Sufficient material is furnished in each unit to provide 40 or more measurements. Initial distribution is in a set of twelve packages, one package shipped at approximately monthly intervals.

Packages are also available on a four month cycle. The tearing strength value of the material is approximately 40 g. The exact value will be given in the certificate accompanying the standard.

This SRM is sold only on a subscription basis in sets of four packages or multiples thereof.

SRM Type Unit of Issue

704a Sets of 4 packages

Linerboard Standard for Tape Adhesion Testing

This material is intended as a uniform source of linerboard for use under ASTM Designation

D2860, Procedure A: Adhesion of Pressure Sensitive Tape to Fiberboard at 90 Degree Angle and

Constant Stress.

SRM Type Unit

1810 Linerboard for Tape Adhesion Testing Package of 50 sheets

76
Research Materials

Research Materials (RM's) are in addition to and distinct from the Standard Reference Materials

(SRM's) issued by NBS. The distinctions between Research Materials and Standard Reference

Materials are in the information supplied with them and purpose for which they are used. Unlike

SRM's, the RM's are not issued with Certificates of Analysis; rather they are accompanied by a "Report of Investigation," the sole authority of which is the author of the report. A Research

Material is intended primarily to further scientific or technical research on that particular material.

One of the principal considerations in issuing an RM is to provide homogeneous material so that an

investigator in one laboratory can be assured that the material he has is the same as that being

investigated in a different laboratory.

High Purity Materials

RM-1C Ultra-purity aluminum single crystal cubes (1 cm on a side) are intended for use in studies

of a variety of solid state phenomena for which both extreme purity and knowledge of

crystallographic orientation are required; e.g., in studies of electron spin resonance, De

Haas-Van Alphen effect, cyclotron resonance, and in a variety of studies relating to the

Fermi surface and the transport properties of aluminum.

RM-1R Ultra-purity aluminum polycrystalline rods (4.2 mm in diameter and 25.4 mm long) are intended for use in research on the mechanical and physical properties of extremely pure

aluminum: e.g., in the determination of resistivity as a function of strain at cryogenic

temperatures to facilitate the design of cryogenic magnets or superconductor stabilizing

elements.

Phosphors

These materials are issued without Certification. NBS Technical Note 417, Spectral Emission

Properties of NBS Standard Phosphor Samples under Photo-Excition, is issued with these materials,

and is equivalent to the "Report of Investigation" issued with Research Materials. They are issued

so that those interested in developing methods of measurement for phosphor materials can work on

a common source of materials. NBS Technical Note 417 may be purchased from Superintendent of

Documents, U.S. Government Printing Office, Washington, D.C. 20402, for 25 cents, by SD Catalog

No. C13.46:47.

SRM

Type

Wt/Unit

(grams)

1020 14 1021 28 1022 14 1023 Zinc-cadmium sulfide phosphor (Ag activator) 14 1024 Zinc-cadmium sulfide phosphor (Cu activator) 14 1025 28 1026 28 1027 Magnesium tungstate 28 1028 Zinc silicate phosphor 28 1029 14 1030 Magnesium arsenate phosphor 28 1031 Calcium halophosphate

28 1032 28 1033 Calcium phosphate phosphor .... 28

77
General Materials

General Materials (GM's) are being distributed by NBS to meet industry needs. These materials

have been standardized either by some Government agency other than NBS, or by some standardsmaking body such as the American Society for Testing and Materials (ASTM), the American

National Standards Institute (ANSI), and the Organization for International Standardization (ISO).

For this class of materials, NBS acts only as a distribution point and does not participate in the

standardization of these materials.

GM-1 Hydrogen in Steel Standards were produced and certified by The Welding Institute in

Cambridge, England, and are distributed in the United States by NBS. GM-1 is a set of 15

cylinders, 5 each of HI, H2, and H3, containing nominally 0.05, 0.10, and 0.20 ml

hydrogen, respectively. The cylinders are 6.35 mm in diameter and about 30 mm long,

weighing approximately 6 grams.

GM-2 Hydrogen in Steel Standards were produced and certified by the Welding Institute in

Cambridge, England, and are distributed in the United States by NBS. GM-2 is a set of 1

5

cylinders, 5 each of H4, H5, and H6, containing nominally 0.20, 0.60, and 1.10 ml

hydrogen, respectively. The cylinders are 12.7 mm in diameter and about 30 mm long,

weighing approximately 22 grams.

GM-5 Nickel and Vanadium in Residual Oil was produced and analyzed under the sponsorship

of the Western Oil and Gas Association and the American Petroleum Institute, and is distributed by NBS. The assigned values for nickel and vanadium are 93 and 79 ppm,

respectively. GM-5 is issued in 475 ml units.

GM-2007 Attapulgus clay is distributed by NBS on request of the ASTM Committee D-2007. It is an adsorbant type clay, 30 to 60 mesh, having adsorptive characteristics as specified by

ASTM D-2007.

78
ALPHABETICAL INDEX

PAGE

ACIDIMETRIC 42

Benzoic acid Potassium phtnalate, acid ALLOYS CHEMICAL COMPOSITION

(See also individual metals) Aluminum

Chip form 31

Wire (neutron monitor density) 53

Cobalt Chip form 31

Wire (neutron monitor density) 53 Copper (see also copper)

Chip form 31

Microprobe 41

Solid form 34

Ferro (steelmaking) 30 Gold

High-purity 40

Microprobe wire 41

High temperature

Solid form 26

IronChip and granular form 28 Microprobe 41

Solid form 28 Lead

Chip form 32

Solid form 36 Magnesium

Chip form 32

Molybdenum

Microprobe 41

Nickel Chip form 32

Oxides 32

Solid form 36 NONFERROUS ALLOYS

Platinum 40 Doped, wire High purity, wire Selenium 33

Granular form

Silver 4

Microprobe

Solder Chip form 32

Solid form 36

TinChip form 33

Solid form 36

Titanium Chip form 33

Solid form 36

Gas-in 37 Tungsten 41

Microprobe

Spelter 37

ZincChip form 33

High-purity 40

Solid form 37 Zirconium Chip form 33

Solid form 38 ALUMINUM

Al-Co alloy (neutron density monitor wire) 53

Al- Si alloy 31

Casting alloy 31

Freezing point standard 60

Metallo-organic compound 44

Ore (bauxite) 47

Radioactivity 69 Wrought alloy 31

AMERICIUM

Radioactivity 68 AMMONIUM DIHYDROGEN PHOSPHATE

Fertilizer 48 ANALYZED GASES 45

Carbon dioxide in nitrogen

Hydrocarbons in air Oxygen in nitrogen

ANALYZED LIQUIDS

Permeation tubes 45

Nickel and vanadium in residual oil 78

Sulfur in distillate fuel oil 45

Sulfur in residual fuel oil 45 ANALYZED SOLIDS 45

Sulfur in coal Trace mercury in coal ARSENIC

Trioxide (oxidimetric value) 42

ASSAY STANDARDS

(See specific constituent) BARIUM

Metallo-organic compound 44 BASIMETRIC

Tris(hydroxymethyl)aminomethane 42

BAUXITE (aluminum ore) 47 BENZOIC ACID

Acidimetric 42

Calorimetric 61

Microchemical 42

BIOLOGICAL STANDARDS 43

Liver, bovine Orchard leaves Tomato leaves Tuna, albacore BISMUTH

Radioactivity 68 BORON

Boric acid 42,53

Boric acid (B-10 enriched) 53

Metallo-organic compound 44 CADMIUM

Metallo-organic compound 44

Radioactivity 68 Vapor pressure standard 62

CALCIUM

Carbonate (clinical) 43

Carbonate (rubber compounding) 73

Metallo-organic compound 44

Molybdate (steelmaking) 30

Silicate (rubber compounding) 73

CALORIMETRIC 61

Combustion calorimetric Heat source CANE SUGAR (Sucrose) 42

CARBIDES

Silicon (refractory) 50 CARBON

Channel black (rubber compounding) 73

Conducting black (rubber compounding) 73

Gas furnace black (rubber compounding) 73

Oil furnace black (rubber compounding) 73

Carbon dioxide in nitrogen 45 CARBON STEELS 16 CAST IRONS 28

Blast furnace Car wheel Chip form

Copper-nickel-chromium

Ductile Gray

High phosphorus

Nickel-chromium Nickel-chromium-molybdenum *

79
Nodular

Solid form

White CAST STEEL 28 CEMENTS

Portland (chemical composition) 48

Turbidimetric and fineness standard , '4 CERAMIC MATERIALS

Carbides 50

Glasses , 50

Minerals 48

Refractories 50 CERIUM

Radioactivity 68 CESIUM

Radioactivity 68 CHEMICAL STANDARDS

Primary 42

Acid potassium phthalate Arsenic trioxide Benzoic acid Boric acid Potassium chloride Potassium dichromate Sodium oxalate Sucrose Trix(hydroxymethyl)aminomethane

Uranium oxide

Intermediate purity Selenium 33

Zinc 40 CHLORINE

Isotopic reference standard 53

Radioactivity 68 CHROMIUM

Ferro (steeimaking) 30

Metallo-organic compound 44

Isotopic reference standard 53

Radioactivity 68

Refractories 50 CLAYS

Atapulgus (ASTM D-2007) 78

Flint 48

Plastic 48 CLINICAL LABORATORY STANDARDS 43

Bilirubin Calcium carbonate

Cholesterol Creatinine

Cortisol Glass filters for spectrophotometry

Liquid filters for spectrophotometry

D-Glucose D-Mannitol Lithium carbonate Potassium chloride Sodium chloride Tris(hydroxymethyl)aminomethane

Tris(hydroxymethyl)aminomethane HQ

Urea

Uric acid VMA

COATING THICKNESS 55 Copper on steel Gold on copper Gold on copper-clad glass-epoxy laminate Gold on Fe-Ni-Co glass sealing alloy Gold on nickel Nickel on brass Nickel on steel Tin on steel COBALT

Metallo-organic compound 44

Radioactivity 68

See Alloys

COLOR STANDARDS

Paint pigment 74

1SCC-NBS centroid color charts 74

Light-sensitive paper 75

Light-sensitive plastic chips 75

Tristimulus integrator systems - spectrophotometer 65 COPPER

Beryllium copper alloys 34

BrassAluminum 34

Cartridge 34

Free Cutting 34

Naval 34 Red 34

Sheet 31

Bronze

Cast 31 Commercial 34

Leaded tin 31

Silicon 31

Coating thickness 55

Concentrate 47

Freezing point standard 60

Gilding metal 34

Isotopic reference standard 53

Linear thermal expansion 63

Metallo-organic compound 44

Microprobe (gold-copper wires) 41

Mill heads 47

Mill tails 47

Nickel silver alloy (Cu58-Nil 2-Zn29) 31 DENSITY STANDARDS

Neutron monitor wire 53

2,2,4-trimethylpentane 58 Smoke density, flaming 76 Smoke density, non-flaming 76 DEXTROSE (Glucose) 42 DIELECTRIC 72

Cyclohexane

1,2 dichloroethane Nitrobenzene DIFFERENTIAL THERMAL ANALYSIS 62

DUCTILE IRON 28 ENVIRONMENTAL STANDARDS 45 Analyzed gases Analyzed liquids Analyzed solids ELASTICITY 59 EMITTANCE 66 FELDSPARS 48

Soda

Potash FERTILIZER

Ammonium dihydrogen phosphate 48 Phosphate rock 47

Potassium nitrate 48 FILTERS 65

Glass for spectrophotometry .

.

Liquid for spectrophotometry

Spectrophotometer - tristimulus integrator systems

FLAMMABILITY STANDARDS

Flame spread index (hardboard sheet) 75 Smoke density, flaming 76 Smoke density, non-flaming 76 FLUORSPAR 47

Assay

Geological

FREEZING POINT STANDARDS 60

Defining fixed points Tin

Zinc Determined reference points

Aluminum

Copper

Lead

Tin

Zinc GASES, ANALYZED

Carbon dioxide in nitrogen

Hydrocarbons in air

80
Oxygen in nitrogen

Sulfur dioxide permeation tubes GASES, IN METALS 38

Iron alloys

Steels Titanium alloys Zirconium alloys GENERAL MATERIALS 78

Clay, attapulgus (ASTM D-2007)

Hydrogen in steel Nickel and vanadium in residual oil GEOLOGICAL 51

Fluorspar 47 GLASS

Boron, high 50

Boron, low 50

Filters for spectrophotometry 65

Chemical composition 50 Lead-barium 50 Opal 50

Spheres for sieve calibration (sizing standards) .... 74

Trace elements in 51

Viscosity standards 58 GLUCOSE (Dextrose)

Clinical 43

Primary chemical 42

GOLD

Coating thickness 57 on epoxy

on Fe-Ni-Co glass sealing alloy on nickel High-purity 40

Microprobe standards (gold-copper wire) 41

Microprobe standards (gold-silver wire) 41

Vapor pressure standard 62

HEAT SOURCE 61

Zirconium-barium chromate HIGH-PURITY METALS 40

Gold, wire and rod

Platinum, doped

Platinum, wire

Zinc HIGH TEMPERATURE ALLOYS 26 HYDROCARBON BLENDS 46 HYDROGEN

in steel (GM-1, GM-2) 78

in titanium 37

Radioactivity standards 68 INTEGRATOR SYSTEMS (COLOR FILTERS) 65 ION-ACTIVITY 54

Ion-selective electrodes pD standards pH standards IRON

Chip form 28

Solid form 28

Metallo-organic compound 44

Ore 47

Radioactivity 68

Thermal conductivity 63

IODINE

Radioactivity 68 ISOTOPIC REFERENCE STANDARDS 53

Boron, natural Boron, enriched Bromine

Chlorine Chromium

Copper

Lead, equal atom, (206/208)

Lead, natural Lead, radiogenic, 92% lead-206 Magnesium

Rubidium

Silver Strontium

KRYPTON

Radioactivity 68

LEAD

Alloys 32,36

Bearing metal 32, 36

Freezing point 60

Isotopic reference standards 53

Metallo-organic compound 44

Solder 32,36

LIGHT SENSITIVE STANDARDS 75

Light sensitive papers

Paper, standard faded strips Light sensitive plastic chips

LIMESTONE 48

Argillaceous Dolomitic LINERBOARD STANDARD FOR TAPE ADHESION

TESTING 76

LIQUIDS, ANALYZED

Nickel and vanadium in residual oil 78

Sulfur in residual fuel oil 45

Sulfur in distillate fuel oil 45 LITHIUM

Metallo-organic compound 44

Ores 47 LOW ALLOY STEELS

Chip form 16

Solid form 21 MAGNESIUM

Alloy 32

Isotopic reference standard 53

Magnesia, light (MgO) (rubber compounding) 73

Metallo-organic compound 44

Refractory (burned magnesite) 50 MAGNETIC

Susceptibility ctandard 64

Tape, computer amplitude reference - secondary

standard 73

MANGANESE

Metallo-organic compound 44

Ore 47 MARAGING STEELS 26 MERCURY

Metallo-organic compound 44

Trace element in coal 46 MELTING POINTS

Alumina 61

METALLO-ORGANIC COMPOUNDS 44 Aluminum

Barium Boron Cadmium

Calcium Chromium

Cobalt Copper

Iron Lead

Lithium Magnesium

Manganese

Mercury

Nickel Phosphorus

Potassium

Silicon

Silver Sodium

Strontium

Tin Vanadium

Zinc METALS

Alloys - see index entry Elements - see index entry High-purity 40 Gas in 38

81
Microprobe 41 Vapor pressure 62

Thermal conductivity 63

Freezing points 60 METALLURGICAL STANDARDS 71

Austenite in ferrite Iron carbide in ferrite MICROCHEMICAL STANDARDS 42

Acetanilide

Anisic acid Benzoic acid o-Bromobenzoic acid m-chlorobenzoic acid Cystine

p-fluorobenzoic acid Nicotinic acid Triphenyl phosphate

Phosphate

Urea MICROCOPY RESOLUTION TEST CHARTS 75 MICROPROBE STANDARDS 41

Gold-copper

Gold-silver Iron - 3% silicon Tungsten-20% molybdenum

MINERALS 48

Clays

Flint

Plastic Feldspars Potash Soda

Limestone

Argillaceous Dolomitic

Ores 47

Bauxite (aluminum)

Fluorspar

Iron, sibley Lithium Manganese

Phosphate rock

Zinc MOLECULAR WEIGHT STANDARDS 59

Polyethylene, branched

Polyethylene, linear Polystyrene, narrow molecular weight distribution Polystyrene, broad molecular weight distribution MOLYBDENUM

Microprobe 41 MOSSBAUER STANDARDS 71 NEUTRON DENSITY MONITOR WIRE

Cobalt in aluminum 53 NICKEL

Alloys

Chip form 32

Solid form 36

Coating thickness 55 on brass on steel Metallo-organic compound 44

Oxides 32

Radioactivity 68 NIOBIUM

Radioactivity 68 NITROGEN IN 38

Cast iron Ingot iron

Steel Titanium

Zirconium NONFERROUS ALLOYS 31 NUCLEAR MATERIALS 52

Neutron density monitor wire Plutonium assay Plutonium isotopic

Uranium assay Uranium isotopic

ORES 47

Bauxite (aluminum)

Iron, sibley Lithium

Lepidolite

Petalite Spodumene

Manganese

Phosphate rock

Zinc concentrate OXALIC ACID

Radioactivity 68

OXIDIMETRIC 42

Arsenic trioxide Potassium dichromate Sodium oxalate OXIDES

Magnesium (rubber compounding) 73

Nickel 32

Titanium 48 Uranium 42

OXYGEN IN 38

Ingot iron Nitrogen

Steel Titanium

Zirconium PAINT 74 PAPER

Internal tearing resistance standard 76

Light sensitive 75

Faded strips 75 PERMEANCE, WATER VAPOR 76 PERMEATION TUBE

Sulfur dioxide 45 PERMITTIVITY. 72

pD STANDARDS 54

Disodium hydrogen phosphate

Potassium dihydrogen phosphate

Sodium bicarbonate Sodium carbonate pH STANDARDS 54

Acid potassium phthalate Borax Disodium hydrogen phosphate

Potassium dihydrogen phosphate

Potassium hydrogen tartrate Potassium tetroxalate Sodium bicarbonate Sodium carbonate Tris(hydroxymethyl)aminomethane

Tris(hydroxymethyl)aminomethane HO

PHOSPHATE

Ammonium dihydrogen 48 Rock 47 PHOSPHORS 77

Barium silicate Calcium halophosphate Calcium phospuate Calcium silicate Calcium tungstate Magnesium arsenate Magnesium tungstate Metallo-organic compound

Zinc-cadmium sulfide (Ag activator) Zinc-cadmium sulfide (Cu activator) Zinc phosphate

Zinc silicate Zinc sulfide PHOSPHORUS

Ferro (steelmaking alloy) 30

Metallo-organic compound 44 PHOTOGRAPHIC 75

Microcopy resolution test charts Step tablets

82
PLATINUM

Doped, wire

High-purity, wire PLUTONIUM

Metal assay Standard matrix

Sulfate tetrahydrate

Radioactivity

POLONIUM

Radioactivity standard POLYMER

Molecular weight

Permittivity ; POLYETHYLENE,

Branched

Linear POLYSTYRENE, MOLECULAR WEIGHT

Broad distribution Narrow distribution POTASSIUM

Acid phthalate (pH standard) Dichromate (oxidimetric value) Dihydrogen thosphate (pD and pH standards) Hydrogen tartrate (pH standard)

Metallo-organic compound

Nitrate (fertilizer) Tetroxalate (pH standard)

PRIMARY CHEMICALS

Arsenic trioxide Benzoic acid Boron

Dextrose

Potassium chloride Potassium dichromate

Potassium acid phthalate

Sodium oxalate Sucrose Uranium oxide PROMETHIUM

Radioactivity

RADIOACTIVITY STANDARDS

Alpha-particle standards

Beta-particle and gamma-ray gas standards

Beta-particle, gamma-ray, and electron-capture

solution standards Contemporary standard for Carbon- 14 dating

laboratories Environmental standards Gamma-ray "point-source" standard Radium gamma-ray solution standards Radium solution standards for radon analysis

RADIUM

Radioactivity

RADON

Radioactivity

REFLECTANCE, SPECULAR SPECTRAL

REFRACTIVE INDEX

2,2,4-trimethylpentane

REFRACTORY MATERIALS

RESEARCH MATERIALS

Aluminum ultra-purity

Phosphors

RUBBER

RUBBER COMPOUNDING STANDARDS

RUBIDIUM

Isotopic reference standard SELENIUM

Metal

Radioactivity

SILICON

Ferro (steelmaking alloy)

Metallo-organic compound

Refractories (S1O2)

4(J SILVER

Alloys (microprobe) 41

Isotopic reference standard 53

5 ^ Metallo-organic compound 44

Radioactivity 68

SIZING STANDARDS 74 Cement

Calibrated glass spheres Turbidimetric and fineness (cement) 68 SMOKE DENSITY CHAMBER STANDARDS 76 SODIUM

59 Bicarbonate (pD and pH standard) 54

• 2 Bromide (isotopic reference standard) 53

59 Carbonate (pD and pH standard) 54

Dihydrogen phosphate (pD and pH standard) 54

Isotopic reference standard 53

59 Metallo-organic compound 44

Oxalate (oxidimetric value) 42

Radioactivity 68

Tetraborate (borax) (pH standard) 54

54 SOLDER

42 Chip form 32

54 Solid form 36 54 SOLIDS, ANALYZED

44 SPECTROPHOTOMETRIC STANDARDS

48 Color filters 54 Glass filters Liquid filters SPECULAR SPECTRAL REFLECTANCE

42 Aluminum on glass Gold on glass STAINLESS STEELS

STEELMAKING ALLOYS

Calcium molybdate

Ferrochromium (high carbon)

Ferrochromium (low carbon)

Ferroniobium

Ferrophosphorus

Ferrosilicon (50%)

Silicon, refined STEEL, THERMAL CONDUCTIVITY 63

68 STEELS, CAST 28 68 STEELS, CHIP FORM

High alloy 18 Low alloy 16 Low alloy, special 16

Plain carbon 16

Stainless 18 Tool 18 STEELS, GAS-IN 38 STEELS, GRANULAR FORM 18 STEELS, SOLID FORM

Cast 28

High temperature alloy 26 68 Low alloy 21 Low alloy, special 22

68 Maraging 26 67 Oxygen 27

Stainless 24 66 Tool 26 50 STRONTIUM

70 Isotopic reference 53

Metallo-organic compound 44 SUCROSE 42

73 Primary chemical 73 SULFUR

Elemental (rubber compounding) 73

53 in residual fuel oils 44

in coal 45 33 SUPERCONDUCTIVE THERMOMETRY FIXED POINT

68 DEVICE 60 SURFACE FLAMMABILITY STANDARD 75

•an TAPE, MAGNETIC - SECONDARY REFERENCE 73

TEMPERATURE

44 Calorimetry 61

50 Differential thermal analysis 62

Heat source 61

83
THERMAL CONDUCTIVITY 63

THERMAL EMITTANCE STANDARDS 66 THERMAL EXPANSION 63

THERMOCOUPLE MATERIALS 63

THORIUM

Radioactivity 68 TIN

Bearing metal 33

Chip form 33

Coating thickness 55

Freezing point "0

Metallo-organic compound 44

Solid form 36 TITANIUM

Chip form 33

Dioxide 48

Gases in 38

Metallo-organic compound 44

Solid form 36

Unalloyed for oxygen 37 TRACE ELEMENTS

Biological 43

in glass 51

Mercury in coal 46

TUNGSTEN

Microprobe 41 TURBIDIMETRIC AND FINENESS STANDARD ... 74

URANIUM 52

Metal Oxide

Depleted

Enriched

Primary standard 42

VANADIUM

Metallo-organic compound 44

VAPOR PERMEANCE, WATER J6 VAPOR PRESSURE STANDARD b2

VISCOSITY STANDARDS

Glass . WATER VAPOR PERMEANCE 76

Radioactivity

ZINC

Freezing point 60

High purity 40

Intermediate purity 40

Metallo-organic compound 44

Oxide (rubber compounding) 73

Spelter modified 37 ZIRCONIUM

Metal 38

Zircaloy-2 33

84
NUMERICAL INDEX TO SRM CERTIFICATES

The Certificate Date listed is the current version of the Certificate. Those dates followed by the

letter "P" indicate that it is a Provisional Certificate.

In general, Provisional Certificates are issued for Standard Reference Materials before all of the

values have been certified, but after a sufficient number of values are certified so that the material is a valuable standard for the intended purpose. As additional values are certified, the Provisional

Certificate may be revised and when and if all of the values are certified, the final Certificate is issued.

When new or revised Certificates are issued for SRM's they are announced in the SRM Price and

Availability List which supplements this catalog. SRM purchasers whose Certificate shows an earlier

date than listed below may obtain the current version of the Certificate from the Office of Standard

Reference Materials, Room B3 14, Chemistry Building, National Bureau of Standards, Washington, D.C. 20234.

One or more of the following letters apply to materials where no date is listed.

A. Individually Certified

B. The material is issued with "Instructions for Use" in lieu of a certificate C. This material is not certified, refer to page reference for details

D. Material is in preparation

E. Research Material: Issued with a "Report of Investigation"

F. General Material: Information provided, but not certified by NBS

G. Set of SRM's: Issued with Certificates for the individual SRM's

H. Prepared on Request: Refer to page reference for details

(M Certificate Page Certificate Page SRM

Date Date

lb 11-8-oor 48 54d 9-20-57 33 3b 3-11-69 28 55e 2-2-61 28

4j 1-25-71 28 57 D 30 5L 11-9-70 28 58a D 30 6g 11-9-70 28 59a 11-6-69 30 7g 10-5-59 28 64b 1-8-62 30

8j 4-10-72 16 65d 10-30-58 16 10g 10-14-65 16 69a 12-28-51P 47 llh 9-1-66P 16 70a 3-26-65P 48

12h 3-7-66 16 71 2-1-29 30 13g 11-18-65P 16 72f 7-20-65 16 14e 11-9-65 16 73c 7-13-66 18 15g 10-1-65P 16 76a D 50

16e 3-23-66P 16 77a D 50 17 4-63 42

78a D 50

19g 9-30-64 16 79a 12-6-71 47 20g 10-23-70 16 81a D 48

25c 4-25-66P 47 82b 4-12-66 28

27e 6-21-66 47 83c 4-16-70P 42

30f 12-23-66P 16 84h 7-9-69 42

32e 4-5-57 16 85b 5-9-57 31 33d 6-10-55 16 87a 11-17-69P 31

36b 7-18-69 16 88a 1-31-67P 48 37e 8-28-58 31 89 8-27-32 50

39i 7-15-68 61 90 10-1-28 30 40h 4-24-69P 42 91 6-15-31 50 41a 12-26-67 42 92 4-30-7 IP 50 42g 7-18-72 60 93a 9-29-72 50 43h D 60 94b 7-28-55 33

44f 1-5-73 60 97a 10-8-69 48 45d 12-6-71 60 98a 10-8-69 48 49e 12-6-71 60 99a 3-26-65P 48 50c 6-25-57 18 100b 8-18-59 16 51b 10-20-57 16 lOlf 5-19-70 18 53e 1-20-70 32

Certificate Date

103a 9-28-62 50 104 7-10-33 50 105 4-22-37P 16 106b 3-24-61 16 107b 11-1-62 28 112 5-26-37 50 113a D 47 114m D 74

115a 4-19-62 28 120b 9-1-72 47 121d 7-7-7 IP 18 122e 11-6-69 28 123c 7-7-7 IP 18 124d 11-6-70 31

125b 4-10-70 16 126c 12-6-72 18 127b 1-25-68P 32 131b 7-16-69 18 132b 11-7-72P 18 133a 6-8-56 18 134a 5-6-57 18 136c 3-24-70P 42

139a 12-17-59 16 140b 4-16-70 42

141b 11-23-65 42

142 7-9-69 42

143b 7-9-69 42

147 7-9-69 42

148 12-22-70 42

152a 10-11-65 16 153a 1-5-60 18 154b 11-15-72 48 155 10-1-46 16 157a 10-16-58 31 158a 8-8-61 31

85
SRM Certificate Pace Date

16UD o-4-oyr lo 162a 12-18-58 32

163 1-11-68 18 165a D 48

166c 3-17-70 18 1 c o 168 1 1 CC O

l-lz-56r ol

171 11-27-51 32 1 73a 33

174 33

I/O 1 76 33 178 7-14-69 lb 180 3-31-71 47

J.1 81OX 8-20-70P 47

182 8-20-70P 47 183 8-20-70P 47 1 CM 184 A 1 A CI 4-1U-5 / 3 1

185e 12-5-72 54

1861c 9-1-70 54

18611c 9-1-70 54 187b 9-9-70 54

loo 1 1 A HA 1-10-64 54

189 1-10-64 ^4

191 7-15-68 ^4 192 7-15-68 54

193 10-16-72 1 QA iy4 10-16- 11 48 195 D 30 196 11-9-70 30 198 1-6-60 50 199 1-6-60 50

217b-5 9-28-62 58,61,66

217b-8S 9-28-62 58,61,66

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CC 356AO CC 360a 1-30-67 33

361 7-26-70P 16 362 7-27-70P 16 363 9-30-70P 16 364 6-16-71P 16 365 7-28-70P 28 366 G Hi 370d C 73

SRM Certificate Page Date

371fC

73

372gC

73

373f c

73

374c c

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375f c

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376a c

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377 c

378a c

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379 c

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5y 1 T 1 4-£Q 73

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467 5-5-65P 22 468 5-5-65P 22 479 9-29-72 41 480 11-22-68P 41

481 2-14-69 41 482 6-6-69 41

483 6-11-71 41

485 7-30-70P 71

SRM Certificate Page Date

493 8-28-70 71

592 4-1-61 46

593 4-1-61 46 594 4-1-61 46

595 4-1-61 46

596 4-1-61 46 597 4-1-61 46 598 4-1-61 46

599 4-1-61 46 607 D 51 608 G 51 609 G 51

610 8-8-72P 51

611 8-8-72P 51 612 8-8-72P 51 613 8-8-72P 51 614 8-8-72P 51 615 8-8-7 2P 51 616 8-8-72P 51 617 8-8-72P 51

618

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619G 51 620 5-1 7-7 2P 50 625 4-24-64 37 626 A "1 A £ A 4-24-64 37 627 4-24-64 37 628 4-24-64 37 CIA 6zy A *SA CA 4-24-64 37 630 4-24-64 37 631 A 1 C TAr> 4-16- /Or 37 633 D 48 634 D 48 635 D 48 636 D 48 637 D 48 638 D 48 639 D 48

641 1-26-60P 36 642 1-26-60P 36 643 1-26-60P 36 644 1-26-60P 36 645 1-26-60P 36 646 1-26-60P 36 654a 3-22-7 IP 36

661 8-1 5-7 2P 22 662 8-1 5-7 2P 22

663 8-15-72P 22 664 8-15-72P 22

665 8-15-72 22

666G 22

667

G 22 668 G 22

671 9-12-60 32

672 9-12-60 32

673 9-12-60 32

680L-1 12-28-67P 40 680L-2 12-28-67P 40

681L-1 12-28-67P 40 681L-2 12-28-67P 40 682 2-1-71P 40 683 7-9-6 8P 40 685-R 9-26-6 8P 40 685-W 9-26-68P 40 700c B 75

701c 10-1-71 75

86
Page

75

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585462

42

61

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63

63

63

63

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63

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62

62

62

62

62

62

62

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62

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64

64

64

64

64

64

64

64

64

SRM Certificate Date

767D

803a 5-5-65 D803a 5-5-65 804a 5-5-65 805a 5-5-65 D805a 5-5-65 807a 5-5-65 D807a 5-5-65 808a 5-5-65 809b 5-5-65 D809b 5-5-65 olua

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948 9-1-72P 949d 9-1-72P 950a 10-27-69 951 2-28-69 952 2-28-69 953 3-12-69 953-Ll 3-12-69 953-L2 3-12-69

Page

60

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2626

2626

2626

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434343

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52

52

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53

53

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SRM Certificate Pag

Date

953-L3 3-12-69 53

960 5-12-72 52

975 3-11-65 53

976 3-24-65 53

977 3-24-65 53

978 3-24-65 53

979 5-3-66 53 980 1-31-67 53

981-3 6-1-68 53

QRA yoH /-z /- IK) 0 0 987 3-6-7 2P 53

988 10-4-72 53

999 9-6-72 42

1002b 12-71 75

1003 7-1-65P 74

1004 4-3-72 74

1006 10-4-71 76

1007 10-4-71 7b

1008 12-5-72 75

1009 12-5-72 75

1010a

B 75

1011 6-18-71P 48 1013 3-16-70P 48 1014 6-18-71P 48

1015 6-18-71P 48 1016 1-17-69P 48 1017a 9-24-71 74

1018a

D 74

1019 1-17-66 74

1020 E 77

1021 E 77

1022 E 77

1023 E 77

1024 E 77 1025 E 77

1026 E 77

1027 E 77 1028 E 77

1029 E 77 1030 E 77

1031 E 77 1032 E 77

1033 E 77 1051b 7-15-68 44

1052b 3-1-68 44

1053a 1-23-70 44

1055b 7-23-68 44 1057b 8-5-68 44 1059b 7-15-67 44

1060a 4-24-64 44

1061c 9-9-70P 44 1062a 4-24-64 44

1063a 4-24-64 44

1064 4-24-64 44

1065b 11-1-67 44

1066a 4-23-69 44 1069b 2-13-69 44

1070a 4-24-64 44

1071a 4-24-64 44 1073b 7-15-67 44

1074a 5-13-66 44

1075a 10-25-67 44

1076 4-24-64 44

1077a 2-10-68 44

87
SRM Certificate Page SRM Certificate Page SRM Certificate Paj Date Date Date

1078a 7-25-72 44 1noy1 3Q TIT nf\ 1-15- 10 28 1 Q/1

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SRM Certificate Page SRM Certificate Page Date Date

2318A 57 4935-C 7-69P 69 2331 A 57 4940-B 1-4-68 69 2332 A 57 494 1-C 4-69 69 2333 A 57 4943 1962 69 2334 A 57 4947 2-10-64 2335 A 57 4949 D 69

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2338A 57 4951 11-56 70 2339 A 57 4953 5-68 70 2340 A 57 4955 3-1-68 i yj 3200 A(5-5-71) 73 4956 3-1-68 70

4200-B A(3-69) 70 4957 A(3-l-68) 70

4201-B A(6-70) 70 4958 A(3-l-68) 70 4202 A(3-l-68) 70 4959 A(3-l-68) 70 4203 D 70 4060 A(3-l-68) 1 u 4205 A(9-68) 70 4961 A(3-l-68) 70 4206 A(9-68) 70 4962 A(3-l-68) 70 4207 A(3-69) 70 4963 A(3-l-68) 70 4210 A(5-69) 70 4964-B A(l 2-31-65) 70 4211 A(5-70) 70 4990-B B oy 4212 A(6-71) 70 4991-C A(5-69) 70 4213 A(5-70) 70 4996-B A(5-69) 70 4214 D 70 U-0002 7-30-70P 52

4215D 70 U-005 4-21-69P 52

4216D 70 TT A1

A 4-21-69P 4222 8-67 69 U-015 4-21-69P 52

4223 8-67 69 U-020 4-21-69P 52 4224 8-67 69 U-030 4-21-69P 52

4226 8-69 69 U-050 4-21-69P 52

4228 4-71 69

TT 1 AA 6-23-66P 4229 A(5-72) 69 U-150 8-5-66P 52

4230

D 69 U-200 6-1-66P 52

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D 69 U-350 5-23-66P 52

4232

D 69 U-500 5-24-66P 52

4233

D 69 U-750 2-11-66P o£

4234D 69 U-800 2-11-66P 52

4235 A(10-69P) 69 U-850 2-11-66P 52

4236D 69 U-900 2-11-66P 52

4240D 70 U-930 2-11-66P 52

424 2-B A(5-72) 70 U-970 7-9-70P 52

4243-B A(5-72) 70

4244-B A(5-72) 70 4245 D 69 4246 D 69 4247 D 69 4300 5-72 69 RM-1C E i 1 4301 5-72 69 RM-1R E n

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4921-C 8-6-64 69 4922-E A(5-67) 69 4925 7-58 69 4926 9-3-61 69 4927 9-3-61 69 4929-C 6-70 69

89
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Materials: Preparation of NBS White Cast

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NBS Spectrometric Standards III: White Cast

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NBS Misc. Publ. 260-13, Standard Reference

Materials: Mossbauer Spectroscopy Standard

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July 1967. 40 cents.*

NBS Misc. Publ. 260-14, Standard Reference

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September 1966. 30 cents.*

NBS Misc. Publ. 260-15, Standard Reference

Materials: Recommended Method of Use of

Standard Light-Sensitive Paper for Calibrating Carbon Arcs Used in Testing Textiles for

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NBS Spec. Publ. 260-16, Standard Reference

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Metallurgical Methods, January 1969.

35 cents.*

NBS Spec' Publ. 260-17, Standard Reference

Materials: Boric Acid; Isotopic and Assay

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90
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91
form NBS-114A (1-71) U.S. dept. of comm. 1. PUBLICATION OR REPORT NO. 2. Gov't Accession

BIBLIOGRAPHIC DATA „ , ^ -, ^ No- sheet NBS SP260, 1973 Cataloc

3. Recipient's Accession No.

4. TITLE AND SUBTITLE

Standard Reference Materials

5. Publication Date April 1973

6. Performing Organization Code

7. AUTHOR(S)

R. W. Seward, Technical Representative

8. Performing Organization

9. PERFORMING ORGANIZATION NAME AND ADDRESS

NATIONAL BUREAU OF STANDARDS

DEPARTMENT OF COMMERCE

WASHINGTON, D.C. 20234

10. Project/Task/Work Unit No.

"3D 9 D R P. R

11. Contract/Grant No.

12. Sponsoring Organization Name and Address 13. Type of Report & Period Covered Interim

14. Sponsoring Agency Code

15. SUPPLEMENTARY NOTES

Supersedes NBS Special Publication 260, July 1970 Edition

16. ABSTRACT (A 200-word or less factual summary of most significant information. If document includes a significant

bibliography or literature survey, mention it here.) This Catalog lists and describes the Standard Reference Materials (SRM's),

Research Materials (RM's), and General Materials (GM's) currently distributed by the National Bureau of Standards, as well as many of the materials currently in preparation. SRM's are used to calibrate measurement

systems and to provide a central basis for uniformity and accuracy of

measurement. The unit and quantity, the type, and the certified characterization are listed for each SRM, as well as directions for ordering.

The RM's are not certified, but are issued to meet the needs of scientists

engaged in materials research. RM's are issued with a "Report of Investigation", the sole authority of which is the author of the report. The

3M's are standardized by some agency other than NBS. NBS acts only as a listribution point and does not participate in the standardization of

these materials. Announcements of new and renewal SRM's, RM's, and GM's

are made in the semi-annual supplements to this Catalog, SRM Price and

Availability List, the NBS Technical News Bulletin, and in scientific

and trade journals.

17. KEY WORDS (Alphabetical order, separated by semicolons) , , . , , . Analysis; characterization, composition; General Materials; properties; Research Materials; Standard

^pfprpnpp Mafpri al c

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[^UNLIMITED.

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TO NTIS.

19. SECURITY CLASS

(THIS REPORT)

UNCL ASSIFIED

21. NO. OF PAGES

96

20. SECURITY CLASS

(THIS PAGE)

UNCLASSIFIED

22. Price

$1.25, domestic postpaid

$1.00, GP0 Bookstore

USCOMM-DC 66244-P7J

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NONPERIODICALS Applied Mathematics Series. Mathematical tables, manuals, and studies. Building Science Series. Research results, test methods, and performance criteria of building materials, components, systems, and structures. Handbooks. Recommended codes of engineering

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