NATL INST. OF STAND & TECH

Bureau of Standards

£-01 Admin. Bldg.

AUG 1 8 1970

NBS

NBS SPECIAL PUBLICATION 260

JULY 1970 EDITION PUBLICATIONS

U.S.

DEPARTMENT

OF

COMMERCE

National

Bureau

of

Standards

Catalog

of

9TAMDARD

"REFERENCE

MATERIALS
NATIONAL BUREAU OF STANDARDS

The National Bureau of Standards 1 was established by an act of Congress March 3, 1901. Today,

in addition to serving as the Nation's central measurement laboratory, the Bureau is a principal

focal point in the Federal Government for assuring maximum application of the physical and

engineering sciences to the advancement of technology in industry and commerce. To this end

the Bureau conducts research and provides central national services in four broad program

areas. These are: (1) basic measurements and standards, (2) materials measurements and

standards, (3) technological measurements and standards, and (4) transfer of technology.

The Bureau comprises the Institute for Basic Standards, the Institute for Materials Research, the

Institute for Applied Technology, the Center for Radiation Research, 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 an Office of Measurement Services and the following technical

divisions:Applied Mathematics—Electricity—Metrology—Mechanics—Heat—Atomic and Molecular Physics—Radio Physics - —Radio Engineering -—Time and Frequency -—Astrophysics - —Cryogenics.

THE INSTITUTE FOR MATERIALS RESEARCH conducts materials research leading to im- proved methods of measurement standards, and data on the properties of well-characterized

materials needed by industry, commerce, educational institutions, and Government; develops,

produces, and distributes standard reference materials; relates the physical and chemical properties of materials to their behavior and their interaction with their environments; and provides

advisory and research services to other Government agencies. The Institute consists of an Office of Standard Reference Materials and the following divisions: Analytical Chemistry—Polymers—Metallurgy—Inorganic Materials—Physical Chemistry.

THE INSTITUTE FOR APPLIED TECHNOLOGY provides technical services to promote

the use of available technology and to facilitate technological innovation in industry and Government; cooperates with public and private organizations in the development of technological

standards, and test methodologies; and provides advisory and research services for Federal, state, and local government agencies. The Institute consists of the following technical divisions and

offices: Engineering Standards—Weights and Measures — Invention and Innovation — Vehicle Systems Research—Product Evaluation—Building Research—Instrument Shops—Measurement Engineering—Electronic Technology—Technical Analysis.

THE CENTER FOR RADIATION RESEARCH engages in research, measurement, and application of radiation tjo the solution of Bureau mission problems and the problems of other agencies and institutions. The Center consists of the following divisions: Reactor Radiation—Linac Radiation—Nuclear Radiation—Applied Radiation. THE CENTER FOR COMPUTER SCIENCES AND TECHNOLOGY conducts research and

provides technical services designed to aid Government agencies in the selection, acquisition, and effective use of automatic data processing equipment; and serves as the principal focus

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 — Sys- tems 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 Measure- ment System, and provides appropriate services to ensure that the NBS staff has optimum accessibility to the scientific information of the world. The Office consists of the following

organizational units:

Office of Standard Reference Data—Clearinghouse for Federal Scientific and Technical Information —Office of Technical Information and Publications—-Library—Office of Public Information—Office of International Relations.

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

- Located at Boulder. Colorado 80302.

:1 Located at 5285 Port Royal Road, Springfield. Virginia 22151,
UNITED STATES DEPARTMENT OF COMMERCE Maurice H. Stans, Secretary

NATIONAL BUREAU OF STANDARDS Lewis M. Branscomb, Director

Catalog of Standard Reference Materials

Office of Standard Reference Materials

National Rureau 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 o- mitted. For these reasons, the certificates issued with the standards should always be consulted to obtain the certified values.

4.

National Bureau of Standards, Special Publication 260 , Issued July 1970 (Supersedes NBS Spec. Publ. 260—1969 Edition)

Nat. Bur. Stand. (U.S.), Spec. Publ. 260—1970 ed., 84 pages (July 1970 ) CODEN: XNBSA

For sale by the Superintendent of Documents, U.S. Government Printing Office. Washington, D.C. 20402 (Order by SD Catalog No. C 13.10:260—1970 ed.) - Price 75 cents.
NATIONAL BUREAU OF STAriDASOS

SEP 1 2 1970

cut*- '

t U $1

Mojito
PREFACE TO THE 1970 EDITION OF THE

STANDARD REFERENCE MATERIALS CATALOG

Several important changes have been introduced with this edition of the NBS-SRM Catalog. The

catalog has been extensively revised to improve readability, ease of use, and to reflect a more

rational ordering of the more than 650 SRMs listed. A subject index, in addition to the numerical

listing by SRM number, has been added. Tables of certified values (please note: these are nominal

values; the certified value appears only on the Certificate or Certificate of Analysis) have been

arranged for easier readability. A major reordering of the various categories of materials offered has

been installed. Categories with an initial "3" are SRMs certified for chemical composition and

although we have maintained "metal-ferrous", "metal-nonferrous", etc. categories, new sections

ordered by element (alphabetically) have been introduced. Categories with an initial "4" refer to SRMs certified for one or more physical properties which have been ordered under the traditional

subject-headings of heat, electricity, radioactivity, etc. Initial "5" categories are reserved for SRMs

falling under "engineering" standards, such as the rubber, plastics, etc. SRMs.

Finally, it should be noted that prices have been omitted from the catalog. These are now

contained only in the current "Supplement to the Catalog", and therefore are not an integral part

of the catalog proper. In the supplement are listed: current prices, current SRMs in inventory, all SRMs added to inventory after the closing date of the latest catalog edition, all SRMs out of stock.

New editions of the catalog can thus be issued bi- or triannually instead of yearly. Supplements to make the catalog current are issued semiannually in January and July.

The Office of Standard Reference Materials welcomes suggestions and comments with a view to further improvement of this catalog.

J. Paul Cali, Acting Chief

Office of Standard Reference Materials

National Bureau of Standards

Washington, D. C. 20234

ni

CONTENTS

Section Heading Page Section General Information

1.1. 1 1.2. Renewal and Discontinued Stan- 2

1.3. New Standard Reference Materials 2

1.4. 2 Procurement Procedures

2.1. Ordering

2.2. Terms

2.3. Shipment

2.3.1. Domestic

2.3.2. Foreign . .

Standards of Certified Chemical Composition

3.1.

3.2.

3.3. 3.4.

3.5.

3.6.

3.7.

Cast Steels, White Cast Irons, Ductile Irons and Blast Furnace Irons

(Solid Form)

Steelmaking Alloys Nonferrous Alloys (Chip Form) . .

.

3.6.1. 3.6.2.

3.6.3. 3.6.4.

3.6.5. 3.6.6. 3.6.10. 3.6.12.

3.6.13.

3.6.14.

3.6.15.

Aluminum Base Cobalt Base .... Copper Base . .

.

Lead Base Magnesium Base

Nickel Base Selenium Base .

.

Tin Base Titanium Base .

.

Zinc Base Zirconium Base . Nonferrous Alloys (Solid Form)

3.7.2. Copper Base

3.7.3. Gold Base

3.7.4. Lead Base

3.7.5. Nickel Base

3.7.6. Platinum Base

3.7.9. Silver Base

3.7.10. Tin Base

3.7.11. Titanium Base

3.7.12. Tungsten Base .. 3.7.13. Zinc Base

3.7.14. Zirconium Base

3.8. Miscellaneous Metals

3.8.1. Gases in Metals

3.8.2. High-Purity Metals

3.8.3. Microprobe Standards . .

.

3.41. Primary, Working, and Secondary

Standard Chemicals

4

3.1.1. Steels (Granular Form) .

.

6

Steels (Solid Form) 6

3.2.1. Ingot Iron and Low-Alloy

Steels 6

3.2.2. Special Ingot Irons and

8

3.2.3. 10

3.2.4. 12

3.2.5. 12

3.2.6. High-Temperature Alloys

3.2.7. 12

14

16

1618

1818

18

18

202020

2222

22

22

24

24

26

26

26

27

27

27

2728

28

2930

30

32

33

34

Heading Page

3.42. Micro-Analysis Standards 34

3.43. Clinical Laboratory Standards .... 35

3.44. Metallo-Organic Compounds 35

3.45. Microstandard Ion-Exchange Beads 36

3.51. Analyzed Gases 36

3.52. Analyzed Liquids 36

3.53. Hydrocarbon Blends 37

3.54. Ores 38

3.55. Cements 40

3.56. Minerals, Refractories, Carbides and Glasses 40

3.56.1. Minerals 40

3.56.2. Refractories 40

3.56.3. Carbides 42

3.56.4. Glasses 42

3.61. Nuclear Materials 4 ^ 3.61.1. Special Nuclear Materials 43

3.61.2. Neutron Density Standards 44

3.62. Isotopic Reference Standards .... 44

3.66. Ion Activity Standards 44

3.66.1. pH Standards 45

3.66.2. pD Standards 45

3.71. Reference Organics 46

3.71.1. Rare Organic Compounds 46

3.71.2. Labeled Organic

Compounds 46

Standards of Certified Physical Properties Mechanics and Metrology Standards

4.1. Coating Thickness 47

4.2. Density Standards 49

4.3. Glass Spheres for Particle Size .... 49

4.4. Glass Viscosity Standards 49

4.5. Molecular Weight Standards 50

Heat Standards

4.21. Freezing Point Standards 50

4.21.1. Defining Fixed Points - International Practical Temperature Scale (1 968) 50

4.21.2. Secondary Reference

Points 51

4.22. Calorimetric Standards 51

4.22.1. Combustion Calorimetric Standards 51

4.22.2. Solution Calorimetric Standards 52

4.22.3. Heat Source Calorimetric Standards 52

4.23. Vapor Pressure Standards 52

4.23.1. Gold 5 2

Optical Standards

4.41. Color Standards for Spectrophotometric Tristimulus Integratory System ^-j 4.42. Phosphors ^3

4.43. Thermal Emittance Standards .... ^ Nuclear Standards

4.44. Refractive Index Standards 54

4.51. Radioactivity Standards 55

4.51.1. Alpha Standards ^
Section Heading Page

4.51.2. Beta-Ray and Gamma- 55 Ray Gas Standards

4.51.3. Beta-Ray, Gamma-Ray,

and Electron Capture Solution Standards

4.51.4. Point-Source Gamma-Ray

Standards 57

4.51.5. Radium Solution Stan- dards (For Radon

Analyses) 57

4.51.6. Radium Gamma-Ray Solution Standards (Recali- brated as of September

1967) 58

Contemporary Standard

for Carbon-14 Dating

Laboratories 58

Miscellaneous Standards

4.86. Mossbauer Differential Chemical Shift for Iron-57 58

5. Engineering Type Standards

5.1. Standard Rubbers and Rubber

Compounding Materials 59

5.1.1. Standard Rubbers 59

5.1.2. Rubber Compounding

Materials 59

5.2. Electric and Magnetic Standards . . 60

5.2.1. Reference Magnetic Tape 60

5.3. Sizing Standards 60

5.3.1. Glass Spheres for Particle Size 60

5.3.2. Turbidimetric and Fineness Standard , , , . 60

5.4. Color Standards 61

5.4.1. The ISCC-NBS Centroid Color Charts 61

5.4.2. Standard Colors for Kitchen and Bathroom

Accessories 61

5.4.3. Paint Pigment Standards

for Color and Tinting

Strength 6 2

5.4.4. Phosphors 62

5.4.5. Light-Sensitive Papers and Plastic Chips 62

5.50. Miscellaneous Standards 63

5.50.1. Microcopy Resolution

Test Charts 63

5.50.2. Surface Flammability

Standard 63

5.50.3. Internal Tearing Resist- ance Paper 64

Appendix I. Typical certificate of characterization • 65 Appendix II. Guide for submission of requests .... 66

Alphabetical Index 68

Index by SRM Number 74

VI
Standard Reference Materials

Issued by the National Bureau of Standards

A descriptive listing of the various standard reference materials distributed at the present time

by the National Bureau of Standards is given. These materials 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 material, as well as directions for ordering. Announcements of new and renewal materials are made in the NBS

Technical News Bulletin, and in scientific and trade journals. The current status and price will be

indicated by insert sheets available at timely intervals from the Bureau.

Key words: Analysis; characterization; composition; property of material; standard reference

material; standards.

1. General Information

1.1. Introduction

This publication lists and describes the standard reference materials issued by the National

Bureau of Standards and provides information on their procurement. Each of these materials

bears a distinguishing name and number, by which it is permanently identified. Each sample

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,

is given a serial number and an individual calibration.

The first standard materials 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 670 standard reference materials are available, covering a wide range of

chemical and physical properties, and the latter designation seems a more appropriate one. As

the variety of materials has increased, new subcategories such as clinical laboratory standards,

nuclear materials, glass-viscosity standards, rubber and rubber compounding materials, color

standards, and thickness of coating standards have been established. These are now listed for

convenience under the headings (a) Standards of certified chemical composition, (b) Standards of

certified physical properties, and (c) Engineering type standards. Subcategories of materials under

these general headings can be conveniently found in the Table of Contents. An index provides

for the location of a particular standard reference material by SRM number or descriptive type

designation.

The detailed listing of materials indicates the nominal certification for which the standard is issued, but the certificate must be consulted for the actual certification. A number of standard

reference materials are issued for which it is not feasible to supply numerical values, or for which

such certification would not be useful. These materials do 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.

I
1.2. Renewal and Discontinued Standard

Reference Materials

The preparation of "renewal" SRMs is intended to be completed at the time the existing

supply of each kind of material is exhausted, but owing to delays in obtaining a proper grade of

material and for other reasons, 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 assigned SRM No. 8. During the following years, a number of renewal batches 8a, 8b, etc. were prepared; and the 8i now available represents the 9th 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

relatively 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.

1.3. New Standard Reference Materials

New SRMs are issued from time-to-time, and announcements are made through the NBS

Technical News Bulletin, and through news releases to scientific, technical, and trade

publications.

1.4. Supplemental Insert Sheets

Supplemental insert sheets are prepared at timely intervals to up-date the listing in regard to new, renewal, out-of-stock, and discontinued SRMs. Insert sheets are also issued for pricing of

these materials. A detachable form in Appendix II of this listing is available to request your

inclusion on the distribution list for these publications as they are issued. Also included in this

listing as Appendix III is a "Guide for the Submission of Requests for the Development of New

or Renewal Standard Reference Materials." It is not possible to produce all materials that are requested, but requests are welcomed and used to justify production of those for which the

greatest need can be demonstrated.

2. Procurement Procedures

2.1. Ordering

Purchase orders should be addressed:

Office of Standard Reference Materials

National Bureau of Standards

Washington, D.C. 20234.

SRMs desired should be indicated by units, number, and name as given in the detailed listings

as: 2 units, SRM 911, cholesterol, when ordering. SRMs of a smaller size than those listed are not supplied, and larger quantities are supplied only in multiples of the basic unit.

Orders received for "out-of-stock" materials are cancelled and returned 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, but a renewal lot of

material will be automatically furnished if available.

2
2.2. Terms

Prices are given in a separate supplement as a part of the listing of available materials. These

are subject to revision and orders will be billed for prices in effect at the time of shipment.

Revised schedules, when issued, are sent to users who have made purchases during the preceding

twelve months, and to persons or organizations who request them. Discounts are not given on

purchases of standard reference materials. Prepaid orders are usually processed within five days.

Remittances of the purchase price need not accompany purchase orders for firms or persons in the North American continent or 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.

2.3. Shipment

2.3.1. Domestic Shipments

Shipments of material (except for certain restricted categories, e.g., hydrocarbons, special

nuclear materials, compressed gases, organic sulfur compounds and radioactive standards)

intended for the United States, Mexico, and Canada are normally shipped prepaid air parcel post

(providing that the parcel does not exceed the weight limits 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. It is impractical for the Bureau to prepay shipping charges and add

this cost to the billing invoice. Hydrocarbons, organic sulfur compounds, compressed gases, rubber compounding materials, radioactive standards, and similar materials are shipped express

collect.

2.3.2. Foreign Shipments

Small weight shipments over $100 in value and prepaid will be shipped by prepaid air parcel

post. Shipments exceeding the parcel post weight limit must be handled through an agent

(shipping or brokerage firm) located in the U.S.A. as designated by the purchaser. Parcels will be

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

Non-prepaid orders will be shipped by prepaid International Parcel Post, subject to size,

weight, and category of material limitations. Any other mode of shipment requested by customer

must be paid for by the customer. (Shipments excluded from International Parcel Post for any

reason, must be handled through an agent [shipping or brokerage firm] located in the U.S.A. as designated by the purchaser. These parcels will be packed for overseas shipment and forwarded

via express collect to the U.S.A. firm designated as agent.)

3
3. Standards of Certified Chemical Composition

3.1. Steels (Chip Form)

This group of standard reference materials has been prepared for the steel industry primarily

for use with methods involving solution of the sample in checking chemical methods of analysis

both for production control and for customer acceptance. The group consists of nominal

composition steel alloys selected to provide a wide range of analytical values for the various

elements which are of vital concern to the chemist. They are furnished in chips, usually sized

between 1 6- and 40-mesh sieves, prepared from selected portions of commercial ingots.

Name

Wt/Unit

(grams) Mn P

U.UoU

.850 .086

.485 .005

.510 .010

.04 L .Ul o .111 .012

.85 .006 .404 .008

.381 .021

.824 .012

.554 .046

.573 .013 .730 .015

1.89 .023

0.79 .010

.798 .008

.537 .006

.545 .014

. / uu

.506 .008 .780 .013 .342 .022

.268 .029 .218 .018

.192 .023

1.24 .015 0.330 .018

1.03 .026

1.31 .028

1.64 .020 0.738 .129

9.15 .018 0.380

.404 .007

.57 .018

.224 .018

1.48 .015

Grav Comb

Bessemer, 0.1 C

Bessemer, 0.2 C

Basic Open Hearth, 0.1 C

Basic Open Hearth, 0.1 C (C only)

Basic Open Hearth, 0.2 C

Basic Open Hearth, 0.4 C

Basic Open Hearth, 0.5 C, 0.03 Sn

Basic Open Hearth, 0.6 C

Basic Open Hearth, 0.8 C

Basic Open Hearth, 1.1 C

Basic Open Hearth, 1.1 C (C only)

Basic Oxygen, 0.4 C

Acid Open Hearth, 0.2 C

Electric Furnace, 1.2 C

Basic Electric, 0.3 C

Manganese (SAE Tl 340)

High-Sulfur, 0.2 C (C only) Cr-V (SAE 6 150)

Ni Cr (SAE 3140)

Ni-Mo (SAE 4820)

Cr-Mo(SAE X4130)

Ni-Mo (SAE 4620)

Cr-Mo-Al (Nitralloy G)

Cr-Ni-Mo (AISI 8640)

W18-Cr4-Vl(Tool)

Mo5-W6-Cr4-V2 (Tool) Mo8-W2-Cr4-Vl (Tool) Co8-Mo9-W2-Cr4-V2 (Tool) Q0.5-W0.5 (Low Alloy)

Stainless (Crl 3) (SAE 420)

Stainless (Crl3-Mo0.3-S0.3)

Crl8-NilO-Ti0.4(SAE 32a) Crl8-Nil2-Mo2.4 (AISI 316)

Crl7-Ni9-0.2Se (SAE 303Se)

Stainless (SAE 431)

Valve (Cr22-Ni4-Mn9)

Ni36 (High Nickel)

Cr2-Mol (Low Alloy)

Low-Carbon Silicon (C only)

Crl5-Ni7-Mo2-All

Crl6-Ni4-Cu3

Ni26-Crl4.5 (A 286)

150 150

150 300

150

150

150

150 150

150 300

150

150

150 150 150

150

150 150

150 150

150

150 150

150

150

150

150 150

150 150

150

150

150

150 150

150

150 100 150

150

150

0.077

.240

.097

.092 .200

.407

.486

.61 .753

1.09 1.07 0.395

.223

1.21 0.264

.397

.193

.49 .409

.173

.301 .193

.326 .404

.719

.825 .808

.902

.905 .310 .120

.038

.046

.052 .150

.541 .090

.114

.0018 .069

.048

.044

0.063

.109

.032

.014 .010

.029

.022 .010

.024

.015

.016 .019 .010

.005 .007

.007 .010

3.26

0.012

0.063

.109

.026

.026

.027 .030

.030

.039

.029

.014 .033

.014 .010

.028

.010

.021 .011 .024

.015 .017

.019 .009

.006

.007 .007

.011

.036 .330

.009 .018

.013

.063

.019

.019

.012 .002

4
3.1. Steels (Chip Form) (Continued)

The certificate of analysis, provided with each of the standards, gives the chemical composition as determined at the National Bureau of Standards; most certificates also include values

obtained by industrial and other laboratories which cooperated in the certification of the

standards.

Cu Ni Cr V Mo W Co Ti Sn

Al

(TotaD Nb N Other

0.016

.008 0.009.005 0.009.008 0.012.007 0.003

.002 0.018.015

.073 .023

.032

.056 .074.046 .003

.001 .006.036

.006 0.032

.072 .053 .071 .002 .013 0.060

.032

.093

.071 .051 .064

.010

.066

.053 .060 .030

.016

.374

.455 .049

.063

.001 .012

.002

.002

.003

.003 .013

.014

.025

.237

0.012 0.027 .008 .008

.004

.031 0.026

.011 .013 .004

.059 A1203 .009

.076 .127

.123 .062

.028

.117

.096 .079

.120

.101 .094

.083

.080 .118

.14 .172 .199

.071

1.19 3.58 0.055

1.81 0.217

.510

.069

.137

.088 .168

.100

.246

.241 10.51 12.26

8.89 2.14

3.94 35.99 0.203

.05 .678

.143

.891 .070

1.18 0.486

4.13

4.21

3.67 3.72 0.485

12.82

12.89 17.58

18.45 17.42

15.76

21.61 0.066

2.18

.18 .002

.002

.005

.003

.003

.003

1.16

1.94

1.25 2.06 0.014

.030

.026

.048

.047 .058 .036

.058

(.001) .004

.023

.246

.184

.255 .199

.183

.082

4.51

8.35

8.85 0.039

.091 .294

.16 2.38 0.248

.011 .009

(.011) .009

.043

1.07 .008 18.44 .012 6.20

2.00

1.76 0.517

.018 As 0.022

8.47 .024

.037 .032

0.101

.096

.42 .039 Pb 0.001 Se 0.247 .074

.441 .082 .179

(.006) .996 .032

.106

3.44 0.22

7.28

4.24

25.8

14.95

16.04

14.54

.040

.041

.25

2.40 0.122

1.3 .089

.076 1.16

.231 Ta .002 2.24 0.23 B .0031 Fe53.3

5
3.1.1. Steels (Granular Form)

These granular-form standard reference materials 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.

SRM

Nos. Name

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 0.081

9.96

3.2. Steels (Solid Form)

Several groups of standards have been prepared and designed 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 standards are provided for

ingot iron, low-alloy steel, stainless steel, tool steel and specialty steel. These standard reference materials are furnished in three basic forms. The 400 series is intended for optical emission spectroscopic methods of analysis utilizing the "point-to-point"

technique. The 800 and 1100 series are intended for "point-to-plane" optical emission spectroscopic methods of analysis. The D800 series, and the 1100 series also, are intended for x-ray

spectroscopic methods of analysis.

3.2.1. Ingot Iron and Low-Alloy Steels

The preparation of these original spectroscopic standard reference materials 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-lQSO's for calibration standards for x-ray spectroscopic

methods of analysis, portions of the material from five of these SRMs were converted to the

SRM Nos. Chemical Composition

(Nominal Weight Percent) 7/32 in Dx 1/2 in D * 1 1/4 in Dx

4 in Long 2 in Long 1/4 in Disk Name Mn 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 Chromium-Nickel .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)

6
3.1.1. Steels (Granular Form) (Continued)

The certificate of analysis, provided with each of these standards, gives the chemical composition as determined at the National Bureau of Standards; also included are values obtained by

industrial and outside laboratories who cooperated in certification of the standards.

SRM

Ci V Mo W Co N As Sb Ga Nos.

0.982

18.49 0.029

.007

0.007 163

0.034 (0.0002) 0.088 (0.003) (0.0009) (0.004) 1011

3.2. Steels (Solid Form) (Continued)

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 National Bureau of Standards, is furnished for each standard;

many certificates also include values obtained by outside laboratories which cooperated in the

certification of the standards. (Values in parentheses are not certified, but are given for

additional information on the chemical composition.)

3.2.1. Ingot Iron and Low-Alloy Steels (Continued)

applicable disk form. Although entirely satisfactory for conventional spectroscopic methods of

analysis, these standard reference materials 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.

Chemical Composition (Nominal Weight Percent)

V Mo W Co Sn

Al

Total B

7/32 in D x 4 in Long1/2 in D x 22 in Long

1 1/4 in Dx

1/4 in Disk

0.005

.002 0.033

.007

.005

803a 804a

805a 807a

808a

. D803a

404a

405a

407a 408a

0.056 D805a

.146 D807a

.002 .065 .002 .009

.91 .006

.32 .013

0.025 0.012 409a 809a

810a D809a

.007

.003 413

414

417a

.014 .036 .020 817a

.22

.21 .0013

.040

418

418a

.006 .0017 .003 420a 820a

821 827

D820a

.012 0.52 0.0027 427

SRM Nos.

7
3.2.2. Special Ingot Irons and

Low-Alloy Steels

The planning of these standard reference materials began in late 1952 to meet critical requirements of calibration in the iron and steel industry. Steel for the standards 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 carried out by means of electron probe microanalysis and quantitative metallographic techniques. It was concluded for example that SRMs 461 and 463 are sufficiently

homogeneous that any present microanalytical technique can be carried out with little chance of

inaccuracy due to inhomogeneity. Details of the metallographic and homogeneity characterizaSRM Nos.

1 1/4 in Dx

3/4 in Disk Name

Chemical Composition (Nominal Weight Percent)

Mn Si Cu Ni Cr

1163

1165 1166

1167 1168

1170

Low Alloy A . . . Low Alloy B . . . Low Alloy C . . . Low Alloy D . . . Ingot Iron E . . . Ingot Iron F . . . Low Alloy G . . . Low Alloy H . . . Selenium(0.3 Se)0.15

.40

.19 .54 .037

.065

.11 .26 .089

0.36

.94 1.15 1.32 0.032

.113

.275

.47 .79

0.053

.045

.031 .017

.008 .012

.033

.023 .109

(0.02)

(.02)

(.02)

(.02)

(.01)

(.01)

(.01) (.02) .207

0.047

.28

.41 .48 .029

.025

.26 .075 .163

0.34

.20

.47 .094

.019 .033

.067

.26 Se 0.29

1.73 0.70

.39 .135

.026

.051 .088

1.03

0.13

.74

.26 .078 .004

.011 .036

.54
3.2.2. Special Ingot Irons and

Low-Alloy Steels (Continued)

tion are given in NBS Miscellaneous Publication 260-3 and 260-10 respectively (see inside back

cover for ordering instructions).

These standards first were issued in 1957 and they have been in widespread demand since that

time. Several years ago it became apparent, although adequate supplies of the 400 series still were available, that supplies of some of the 1100 series would be exhausted. To remedy this situation, planning of a new series of 5 was undertaken; the melting and casting of these has now

been completed. The replacement series will be SRM Nos. 1261 through 1265 with most being

available for issue by mid- 1970.

Chemical Composition (Nominal Weight Percent)

W Co Ti As Sn

Al

(Total) Nb Ta B Pb Zr

SRM Nos.

7/32 in D x 4 in Long

0.012

.053

.105 .022

(.001)

(.006) .20 .077

0.26

.11 .013 .028

.008

.046

.074

.16

(0.01) .037 .010

.004

.20 .057

.26 .011

0.028

.046

.10 .018 .010

.014

.14 .008

0.022

.066 .013

.043

.001 .005

.10 .009

(0.005) .023 .027

.005

.19 .015

.16 .042

0.011

.096

.195 .037

(.001) .005

.29 .006

0.002

.036

.15 .069

.001 .002

.23 .005

0.0002

.0005 .0012

.005 .0001

(.0002)

(.0002) .009

(0.003) .006

.012 .020 K.0005)

(.0013) .0006 K.0005)

K0.005)

.063

.20 .010

(.002) K.005)

.094 K.005)

461 462

463

464

465 466

467

468

Note: Certificate also provides chemical information for Ag, Ge, O, and N.
3.2.3. Stainless Steels

Three groups of stainless steel standard reference materials designed primarily for calibration in

spectroscopic methods of analysis are available.

Group I, SRM 442 through 444, consists of three standards 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.

GROUP I

SRM Nos. Chemical Composition (Nominal Weight Percent)

7/32 inDx

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-Nil0 4.62 (.65) .24 10.1 20.5 .12 .23 (.17) .22 GROUP II SRM Nos. Chemical Composition

(Nominal Weight Percent) 7/32 in D x 1/2 in D x 1 1/4 inDx

4 in Long 2 in Long 1/4 in Disks Name Mn Si Cu Ni Cr V

445 845 D845 Crl3-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 Cr3-Ni25 .12 .36 24.8 2.99 (.006)

GROUP III

SRM Nos. Chemical Composition (Nominal Weight Percent)

1 1/4 inDx

3/4 in Disks Name C Mn P S Si Cu Ni Cr V

1152 (Crl8-Nil0) 0.163 1.19 0.017 0.017 0.654 0.497 10.21 18.49 0.044 1154 (Crl9-Nil0) .094 1.74 .038 .033 1.09 .560 10.25 19.58 .061 1155 (AISI 316) .046 1.63 .020 .018 0.50 .169 12.18 18.45 .047 1185 (AISI 316) .11 1.22 .019 .016 .40 .067 13.18 17.09

10
3.2.3. Stainless Steels (Continued)

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

recommended.

Group III consists of four stainless steels available only in 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 on the

chemical composition.)

GROUP I (Continued)

Chemical Composition (Nominal Weight Percent)

Ti Sn Nb Ta B Pb Zr 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 Nos.

7/32 in Dx

GROUP II (Continued)

Chemical Composition SRM Nos. (Nominal Weight Percent) 7/32 in D x l/2inDx 1 1/4 in D x Mo W Ti Sn Nb Ta 4 in Long 2 in Long 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

GROUP III (Continued)

Chemical Composition (Nominal Weight Percent)

Mo Co Ti As Sn Al Nb Ta B Pb Zr 3/4 in Disks

0.366 (0.095) (0.12) (0.01) (0.004) (0.003) (0.20) (0.085) (0.005) (0.001) (0.03) 1152

.463 (.12) (.48) (.03) (.023) (.035) (.26) (.045) (.0006) (.012) (.022) 1154

2.38 .101 .001 1155

2.01 <001 <001 <001 1185

SRM Nos.

1 1/4 inDx

11
3.2.4. Tool Steels

A group of six high-speed tool steel standards 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 Nos. 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 Name Mn Si Cu Cr V Mo W Co

436 836 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

3.2.5. 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. 1156, of

SRM Nos. Chemical Compositions (Nominal Weight Percent)

1 1/4 inDx

3/4 in Disk Name C Mn P s Si Cu

1156 Maraging, (Ni 19) .... 0.023 0.21 0.011 0.012 0.184 0.025

3.2.6. High-Temperature Alloys

(Solid Form)

High-temperature alloy standards are prepared to meet the critical needs of industry, particularly the aerospace industries, and government agencies, for alloy standard reference materials of

this type. These standards are useful in instrument calibration, primarily for x-ray and optical

SRM Nos.

1 1/4 in Dx rhemical Composition (Nominal Weight Percent) 3/4 in Disk Name C Mn P S Si Cu Ni Al

1194 A 286 0.81 0.67 0.011 0.008 0.71 0.047 24.06 1.45 1185 Crl7-Nil3 (AISI 316, AMS 5360A) .11 1.22 .019 .016 .40 .067 13.18 1155 Crl8-Nil2-Mo2 (AISI 316) .046 1.63 .020 .018 .502 .169 12.18

12
3.2.5. Maraging Steel (Continued)

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

spectroscopic methods of analysis.

Chemical Composition (Nominal Weight Percent)

Ni Cr Mo Co Ti Al Zr B Ca 3/4 in Disk

19.0 0.20 3.1 7.3 0.21 0.047 0.004 0.003 <0.001 1156

SRM Nos.

1 l/4inD x

3.2.6. High-Temperature Alloys

(Solid Form) (Continued)

emission spectroscopic methods of analysis. Additional new high-temperature alloy standards will be prepared, and issued as needs are recognized and documented.

Chemical Composition (Nominal Weight Percent)

Fe Cr V Mo Co Ti Nb Ta Pb Zr B 3/4 in Disk

51.3 16.35 17.09

18.45

0.32 1.27

2.01 2.38

2.77 1.45 <0.001

0.026 0.0090 1194

1185

1155

<0.001 <0.001

.047 0.101 0.001

SRM Nos.

1 1/4 in D x

13
3.2.7. Oxygen Standards

Standard reference materials, SRM Nos. 1090 through 1094, are available for the determination of oxygen by vacuum fusion, inert gas fusion, and neutron activation methods.

Details on the preparation and analysis of SRMs 1090, 1091, and 1092 are given in NBS Misc.

Publ. 260-14. (See inside back cover for ordering instructions.)

SRM Oxygen Nitrogen

Nos. Name Unit (ppm) (Ppm)

1090 Rods 1/4 in D x 4 in Long 491 (60) 1091 Stainless Steel (AISI 431) Rods 5/16 in D x 4 in Long 131 (945) 1092 Vacuum-melted steel Rods 1/4 in D x4 in Long 28 (4) 1093 Rods 1/4 in D x 4 in Long 60 (4807) 1094 Maraging steel Rods 1/4 in D x4 in Long 4.5 (71)

3.3. Cast Irons (Chip Form)

This group of cast iron standard reference materials is similar to the steels described in Section

3.1. and has been prepared for use in checking chemical methods in the cast iron industry. These

materials are furnished in the form of chips, usually sized between 16- and 25-mesh sieves. They

are prepared by lathe cutting of chips with a multiple-tooth cutting tool from thin-wall

SRM

Nos. Name

Wt/Unit

(grams)

Chemical Composition (Nominal Weight Percent)

Total Graphitic Mn Grav. Comb. Si Cu

0.088 1.04 0.050

.062 1.31 .24 .123 1.83 1.01 .123 1.06 0.50 .060 2.41 .128

.011 0.001 .065

.007 2.10 .038

.067 1.35 .235

.065 2.13 5.52

.074 0.510 0.033

.007 2.44 .152

.014 2.85 .14 .006 2.73 .14

3b White

4j Cast 5L Cast

Cast 7g Cast (High Phosphorus) 55e Ingot 82b Cast (Ni-Cr) 107b Cast (Ni-Cr-Mo) 115a Cast (Cu-Ni-Cr) 122e Cast (Car Wheel)

Ductile Nodular

Nodular

110

150

150

150

150

150 150

150

150

150

2.44

2.99

2.59

2.84

2.69 0.0112

2.85

2.75 2.62

3.51

2.38

1.99 2.00

2.59

2.37

1.87 1.96 2.78

0.353

.79 .68 1.06 0.612

.035

.745 .510

1.00 0.528

0.086

.17 .280

.56 .794

.003

.025 .058

.086

.349

0.061

.012

.067 .064

.007

.014
3.3. Cast Irons (Chip Form) (Continued)

cylindrical castings especially made for the purpose. Supplied with each material is a certificate

of analysis listing the chemical composition as determined at the National Bureau of Standards

and in other laboratories which have cooperated in their certification.

Ni Ci V Mo

0.010 0.052 0.006 0.002

.068 .09 .03 .080

.086 .15 .036 .020

.136 .37 .06 .035 .120 .048 .010 .012

.038 .006 <001 .011 1.22 .333 .027 .002

2.12 .560 .008 .750

14.49 1.98 .014 .050 0.080 (0.038) (.032) (.001) 20.32 1.98 .012 .010 0.023 0.032 .005 .009

.06 .034

Chemical Composition (Nominal Weight Percent)

Co Ti As Sn

Al

(Total) Mg N

SRM

Nos.

3b

4j5L

6g

0.05

.05 .06 .044

0.03 <005

.04 .014

0.006

.006

.004 7g

.007 0.007 0.002 .004 55e 82b

107b

115a

122e

.027 .016

.020

(.026)

(.008)

(.018) (.009) .018

.019 .020

0.068

.053

.069

341 342

342a

0.007
3.4. Cast Steels, White Cast Irons,

Ductile Irons and Blast

Furnace Irons (Solid Form)

These chill-cast standard reference materials 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.

SRM Nos.

1 1/4 in thick 1/2 in Disk Name

Chemical Composition (Nominal Weight Percent)

c Mn P s Cu Ni Cr V Mo

3.45 0.180 0.168 0.168 0.283 0.170 0.035 0.018 0.008 0.008

1.98 1.62 .648 .018 3.47 1.50 2.99 2.41 .222 1.49 3.60 0.78 .160 .059 1.31 0.23 0.070 0.093 .032 0.078

2.89 .66 .300 (.11) 1.82 .99 .091 .146 .036 .022

3.28 1.05 .564 .127 1.04 .49 .138 .363 .055 .036

3.18 0.725 .0070 .010 1.92 .10 .028 .030 .030 .090

3.64 .480 .072 .020 1.11 .21 .54 .145 .0090 .05 2.94 .18 .20 .015 3.33 1.02 1.65 .053 .006 .022 0.120 .43 .053 .053 0.34 0.09 0.10 .12 .020 .05 .792 .98 .011 .013 .85 .40 .93 1.96 .24 .51

3.91 .414 .158 .028 1.68 .144 .115 0.145 .008 (.005) 4.27 1.33 .112 .021 0.276 .090 .021 .019 .004 .007

1174a

1175a 1147

1148

1149 1140

1141 1142

1138

1139

1143

1144

White (Special 1) White (Special 2) White (4i) White (5L) White (6g) Ductile (No. 1) Ductile (No. 2) Ductile (No. 3) Cast Steel (No. 1) . .

Cast Steel (No. 2) . . .

Blast Furnace (No. 1) Blast Furnace (No. 2)

3.5. Steelmaking Alloys

These standard reference materials 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. A certificate of analysis accompanies each standard.

SRM

Nos. Name

Chemical Composition (Nominal Weight Percent) Wt/Unit

(grams) C Mn P

60

50

100 10060

0.087

.04 4.30

0.035

0.034

.76 .208

.28

0.008

.016

.012

75 100

26.2 .060 1.71 .035

Si Cu Ni

96.80 0.02 0.002

48.2 .05 .03 1.42

.38

4.39

57 59a 64b

196

7190 340

Refined Silicon Ferrosilicon-50% Ferrochromium (High Carbon)

Ferrochromium (Low Carbon)

Calcium Molybdate

Ferrophosphorus

Ferroniobium

0.005

.062

16
3.4. Cast Steels, White Cast Irons,

Ductile Irons and Blast

Furnace Irons (Solid Form) (Continued)

These standards are furnished as chill-cast sections. Details of the preparation and intended use of the standards 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 additional information on the

chemical composition).

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 .0220.23

.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

SRM Nos.

3.5. Steelmaking Alloys (Continued)

These standards 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.

Cr Mo

Chemical Composition (Nominal Weight Percent)

Nb Zr Ca Mg Fe SRM

Nos.

0.025

.08 68.03 70.87

0.15

.12 35.3

0.10

.06

.89

0.67

.35

57.51

0.025 0.73

.04

0.01 0.65 50.0

1.92

0.06 0.033

Ta 3.73

5759a 64b

196

7190 340

17
3.6. Nonferrous Alloys (Chip Form)

These SRMs 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 in the form of approximately 10- to 20-mesh chips.

The remaining standards 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 also give values obtained by industrial and other

outside laboratories cooperating in certification of the standards.

3.6.1. Aluminum-Base Alloys

Chemical Composition (Nominal Weight Percent) SRM

Nos. Name

Wt/Unit

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

85b

86c 87a

Wrought ....

Casting 75

75

75

0.61

.041

.26

0.18

.68 6.24

3.99 7.92 0.300.084

.030

.57

0.211

.029

.11

0.006 0.022

.035

.18 0.05

0.019

.02

0.24

.90

.61

0.021

.031

.10

1.49 0.002

.37

0.030

1.50

Al-Si <01 0.16

3.6.2. Cobalt-Base Alloys

Chemical Composition (Nominal Weight Percent) SRM

No. Name

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

3.6.3. Copper-Base Alloys

SRM Wt/Unit

Nos. Name (grams)

37e Brass, Sheet 150

52c Bronze, Cast 150 124d Bronze, Ounce Metal . . 150

157a Nickel Silver 135 158a 150

184 Bronze, Leaded Tin . . . 150

Chemical Composition (Nominal Weight Percent)

Mn Cu Ni

69.61 0.53 89.25 .76 83.60 .99 58.61 11.82 90.93 0.001 88.96 .50

0.174

1.11

0.001

.02 .009 .026

.009

0.002

.093

3.03

3.6.4. Lead-Base Alloys

Chemical Composition (Nominal Weight Percent) SRM

Nos. Name

Wt/Unit

(grams) Cu Ni As Sn Sb Bi Ag

127b Solder (Pb60-Sn40) . . . 150 0.011 0.012 0.01 39.3 0.43 0.06 0.01

Also available in solid form as SRM 1131, see Section 3.7.4.

18
3.6.2. Cobalt-Base Alloys (Continued)

Chemical Composition (Nominal Weight Percent)

Ta Fe Mn C P s 1 Si Cu V Ti No.

0.95 3.43 1.50 0.37 0.008 0.005 1 0.80 0.035 0.03 0.06 168

SRM

3.6.3. Copper-Base Alloys (Continued)

Chemical Composition (Nominal Weight Percent)

Co As Sn Fe Al Pb Sb

1.00 0.004 1.00

7.85 .004 0.011 0.02 4.56 .18 5.20 0.022 0.021 .174 0.034

.96 1.23 0.46 .097 6.38 0.005 1.44

Ag

SRM

Zn Nos.

27.85 37e

2.12 52c

5.06 124e

29.09 157a

2.08 158a

2.69 184

0.17 0.02

19
3.6.5. Magnesium-Base Alloys

Chemical Composition (Nominal Weight Percent) SRM

Nos. Name

Wt/Unit

(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

3.6.6. Nickel-Base Alloys

Chemical Composition (Nominal Weight Percent) SRM

Nos. Name

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 0.002

0.007 0.93

.29

30.61 0.006

63.95 57.150.042

19.50

3.6.6.1. Nickel Oxide

The nickel oxide standard reference materials 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

Nos. Name

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

3.6.10. Selenium Base

This standard reference material 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

Chemical Composition (Nominal Parts Per Million) SRM

Nos. Name

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

20
3.6.6. Nickel-Base Alloys (Continued)

Chemical Composition (Nominal Weight Percent) V Mo W Co Ti Al B Ca Fe Nb Ta Zr Nos.

0.076

13.95 0.005

3.05 0.501.23 0.013 2.19 0.13 162a

0.081 4.04 <0.01 0.0046 <0.01 <0.01 0.081 349

SRM

3.6.10. Selenium-Base Alloy (Continued)

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)

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

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

SRM

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

21
3.6.12. Tin-Base Alloys

Chemical Composition (Nominal Weight Percent) SRM

No. Name 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

3.6.13. Titanium-Base Alloys

Chemical Composition (Nominal Weight Percent) SRM

Nos. Name

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

2.47

6.47 4.27

5.16

0.15

.175 .070

0.018

.012

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

3.6.14. Zinc-Base

Chemical Composition (Nominal Weight Percent) SRM

Nos. Name

Wt/Unit

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

94b Die Casting

Alloy 150 4500.014 1.01 0.000570.006 0.006

(.000002)

4.07 0.002 .000120.018

.00027

0.006

.00111 0.042 728 0.00011

3.6.15. Zirconium-Base

Chemical Composition (Nominal Parts Per Million) SRM

Nos. Name

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

22
23
3.7. Nonferrous (Solid Form)

Several groups of standard reference materials have been prepared. They 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 standards have been prepared for many of the commercially

important nonferrous alloy systems.

3.7.2. Copper-Base Alloys

Eight groups of copper-base alloy standards have been prepared to provide for analytical

control by rapid instrumental methods in the copper industry. These standards are intended

primarily for calibration of optical emission and x-ray spectroscopic equipment, and have been

prepared in chill-cast form for the producer, and in wrought form for the consumer. Both forms

have nearly identical chemical compositions. Each of the eight principal copper-base alloys are covered by three standard reference materials comprised of a "nominal-composition" together

SRM Nos. Name

Chemical Composition (Nominal Weight Percent)

Cu Zn Pb Fe Sn Ni Al Sb As

67.43 69.50

72.85 59.23 61.33

32.20

30.30

27.10

35.7

35.3

0.106

.05 .020

3.73

2.77

0.072

.037

.011

.26 .088

0.055

.016

.006

.88

.43

0.052

.013

.005

.16 .070

0.008

.0006 .0007

0.018

.012

.005

0.019

.009

.004

63.7 59.08

61.21 64.95

82.2

34.0 40.08

37.34

34.42

17.4

2.0 0.032

.18 .063

.075

.044

.004

.037 .050

.053

.21 .74 1.04 0.39

.10

.043

.025 .098

.033

.10 84.59

87.14 93.38

95.03 96.45

15.20

12.81 6.30 4.80

3.47

.033

.013 .057

.026 .012

.033 .010

.070

.043

.017

.051 .019

.12 .064

.027

.053 .022 .100

.057

.021 87.96 90.37

93.01

75.1

77.1

11.73

9.44 6.87

21.9

20.5

.013 .042

.069

.025 .050

.13 .046

.014

.065 .030

.10 .044

.021

.074 .048

.020

2.80

2.14

.010

.050

.007 .040

80.1 18.1 .105 .015 1.46 .100 .090

97.49 (0.01) (.002) .085 .01 .012 0.07

97.45 (.01) (.003) .16 (.01) (.01) .17

97.10 (.01 (.001) .04 (.01) ( .01) .02

CI 100

1101 CHOI

1102 C1102

1103 C1103

1104 C1104

1105 CI 105 1106 CI 106 1107 C1107

1108 CI 108 1109 C1109

1110 C1110

1111 Cllll

1112 C1112

1113 C1113

1114 C1114

1115 C1115

1116 C1116

1117 C1117

1118 C1118

1119 C1119

1120 CI 120

1121 CI 121

1122 C1122

1123 CI 123

Cartridge Brass A

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

CABRA alloy 165-170

Beryllium Copper

CABRA alloy 25-172 . Beryllium Copper

CABRA alloy 10-175 .

24
3.7. Nonferrous (Solid Form) (Continued)

Also, a growing list of high-purity metals is becoming available for use in research and in the

development of more rapid and more meaningful methods of analysis and production quality

control.

3.7.2. Copper-Base Alloys (Continued)

with a low- and a high-composition standard. To make the standards more widely applicable, a number of trace elements were purposely added to the cartridge brass series. This series has been

certified for these elements. The beryllium copper standards are representative of the nominal

chemical composition of three Copper and Brass Research Association (CABRA) alloy designations, Nos. 165-170, 25-172, and 10-175 respectively. (Values in parentheses are not certified,

but are given for additional information on the chemical composition.)

Chemical Composition (Nominal Weight Percent)

Be Bi Cd Mn P Si Ag Te Co Cr SRM Nos.

0.0015

.00055

.00003

0.0010

.0004

.0005

0.013

.0055

.0045

0.003 .0055

.0045

0.010 .0020

.0048

.003

.005 .003

(0.010)

(.005)

(.002)

0.019

.003 .0010

0.0035

.0015

.0003 1101 1102

1103

1104

1105

1106 1107

1108

1109 1110

1111 1112

1113

1114 1115

1116 1117

1118 1119

1120

1121

1122

1123

CllOO

CllOl

C1102

C1103

CI 104 C1105

CI 106 C1107

C1108

C1109

ClllO

Cllll

C1112

C1113

C1114

C1115

C1116

C1117

C1118

C1119

CI 120

CI 1 21

C1122

CI 123

.005

.025 .006

.009

.008

.009

.005 .008 .002

.13 .070

.018

(.005)

( .004)

(.002)

0.295

.220

2.35

( 0.002)

(.002)

(.002)

.0021

.0015

.0011

.1

.17

.03

1.90

1.75

0.46

(.004)

(.004)

(.002)

(.005)

(.005)

- (.009)

25
3.7.3. Gold-Base Alloys

High purity gold, in wire and rod form, has been certified for chemical composition. This

standard reference material was prepared primarily for applications in quantitative spark mass

spectroscopic methods; it also is useful for analysts working at trace level concentrations of

elements in high-purity metals. Detailed information is given in Section 3.8.2., High-Purity

Metals.

Two series of gold-base alloy wires, are available, each consisting of a set of six wires, color

coded for identification, approximately 0.5 mm in diameter and 5 cm long. These consist of

high-purity gold, four intermediate alloys in steps of approximately 20 weight per cent of copper

and silver respectively and a high-purity copper and a high-purity silver wire. These standard

reference materials, sold only in sets, are intended primarily for reference points in quantitative

electron microprobe methods of analysis. Detailed information is given in Section 3.8.3.,

Microprobe Standards.

Also available is a high-purity gold wire calibrated as a vapor pressure standard reference

material. Detailed information is in Section, 4.23., Vapor Pressure.

3.7.4. Lead-Base Alloy

At present there is only one lead-base, solid form, standard reference material, No. 1131,

available from the National Bureau of Standards certified for chemical composition. This is a solder prepared to meet specifications of alloy 40B in ASTM Designation B32. The material for

the standard was prepared in powder form, with a particle size small enough to pass through a 200 mesh sieve, cold compacted at 1 3 tons psi to billets and cold extruded to rods from which

disks were cut. The same stock of powder was used for the preparation of granular form SRM 127b listed in Section 3.6.4.

Chemical Composition (Nominal Weight Percent) SRM

Nos. Name Unit Size Cu Ni As Sn Sb Bi Ag

1131 Solder PB60-Sn40 1 1/4 in D x 3/4 in thick 0.011 0.012 0.01 39.3 0.43 0.06 0.01

3.7.5. Nickel-Base Alloys

These standards 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

Nos. Name Unit Size C Mn P S Si Cu Ni Cr Mo Co Fe

1159 1160Ni48, balance Fe

Ni80, Mo4, balance Fe . . .

1 1/4 in Dx3/4 in thick

1 1/4 inDx3/4 in thick 0.007.019 0.305.550 0.003.003 0.003.001 0.32.37 0.038.021 48.280.3

0.06

.05 0.010

4.35 0.022.054 51.014.3

26
3.7.6. Platinum-Base Alloys

Two platinum standard reference materials, SRM Nos. 680 and 681, in wire form, have been

prepared and certified to provide homogeneous reference materials for analysis of high-purity

platinum. Prices and detailed information are given in Section 3.8.2., High-Purity Metals.

3.7.9. Silver-Base Alloys

A set of six silver-gold alloy wires are available color coded for easy identification, and

approximately 0.5 mm in diameter and 5 cm. long. This set is intended primarily for use in quantitative electron probe microanalysis. Detailed information is given in Section

3.8.3., Microprobe Standards.

3.7.10. Tin-Base Alloys

This tin metal standard reference material has been prepared primarily for the tin-plate

industry; it is useful for the calibration of optical emission spectroscopic equipment by the

"point-to-point" technique. It is furnished in the form of rods.

A 40 Sn-60 Pb solder also is available, in solid form, as SRM 1131 and, in granular form, as SRM 127b. These are listed in Section 3.7.4. and 3.6.4. respectively.

Chemical Composition (Nominal Weight Percent) SRM

Nos. Name Unit Size Cu Ni Co As Pb Sb Bi Ag Zn Cd

432 Tin B ... Rod- 1/4 in Dx 4 in long 0.097 0.020 0.011 0.075 0.094 0.095 0.0098 0.0095 0.020 0.0095

3.7.11. Titanium-Base Alloys

A number of titanium-base alloy standard reference materials, primarily for the aerospace

industries are available for analytical control and equipment calibration purposes. Included are materials 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

Nos. Name 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 Dx 3/4 in Disks 11.68 644 2Cr-2Fe-2Mo (A) . . . 1 1/4 in Dx 3/4 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 1.11 654 6A1-4V (B) 1 1/4 in Dx 3/4 in Disks 6.03 3.83

27
3.7.11.1. Titanium-Base Alloys — Oxygen

and Hydrogen Only

Standard reference materials, intended for determination of hydrogen and oxygen in titaniumbase 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. These are listed in Section

3.2.7..

SRM Wt/Unit

Nos. Name Unit Size (grams)

352 Unalloyed titanium for hydrogen .... 1/4 in square x 0.05 in thick 20 353 Unalloyed titanium for hydrogen .... 1/2 in square x 0.05 in thick 20 354 Unalloyed titanium for hydrogen .... 1/2 in squarex0.05 in thick 20

355 Rod-1/2 in Dx2 in long 356 AUoy, 6A1-4V Rod-.425 in D x 1 3/4 in long

Oxygen

(ppm)

Hydrogen

(Wt%)

3031

1332

0.0032

.0098

.0215

3.7.12. Tungsten-Base Alloy

A composite wire is available in the form of 1 mm thick wafers consisting of a tungsten-20

percent molybdenum wire embedded in a pure molybdenum jacket onto which has been

electroplated a layer of pure tungsten. Intended primarily as a standard for quantitative electron

microprobe analysis, it is listed in Section 3.8.3., Microprobe Standards.

3.7.13. Zinc-Base Alloys

Zinc-base alloy standard reference materials 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) intended for calibrating and checking optical emission and x-ray spectroscopic

techniques. The certificate of analysis supplied with each gives the chemical composition as determined at the National Bureau of Standards and values determined by outside laboratories

who, in most cases, have cooperated in certification of the standards.

3.7.13.1. High-Purity Zinc

Two high-purity zinc standards, SRM 682 and 683, are available as semicircular bar segments.

Detailed information is given in Section 3.8.2., High-Purity Metals. Also a Freezing Point

Standard, of high purity zinc, is available as SRM 740. Details are given in Section 4.21.1.
3.7.13.2. Die Casting Alloys and Spelter

Zinc-base die casting alloys and a spelter standard 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 standard reference materials 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 additional information on chemical

compositions.)

Chemical Composition (Nominal Weight Percent) SRM

Nos. Name 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 41

A

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 41A 1 3/4 in square x 3/4 in thick 0.976 4.30 .030 .023 .0083 .0048 631 1 3/4 in square x 3/4 in thick .0013 0.50 «001) .005 (.001) .0002

Chemical Composition (Nominal Weight Percent) SRM

Nos. Sn Cr Mn Ni Si In Ga Ca Ag Ge

625 626

627

628

629 630

631

0.0006

.0012

.0042

.0017

.012 .0040

.0001

0.0128

.0395 .0038

.0087

.0008

.0031

.0001

0.031

.048

.014

.0091 .0017 .0106

.0015

0.0184

.047 .0029

.030 .0075 .0027 K.0005)

0.017

.042

.021 .009

.078

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

3.7.14. Zirconium-Base Alloys

A zirconium metal standard reference material, certified at the parts-per-million level, is available in the form of a wrought disk for checking and calibration of optical emission and

x-ray spectroscopic instruments used in the analytical control of trace level constitents of

zirconium for use in nuclear power applications.

(Values in parentheses are not certified, but are given for additional information on the

chemical composition.)

Chemical Composition (Nominal Parts Per Million) SRM

Nos. Name Unit Size Mn Si Cu Ni Cr w Ti Al B U Fe

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

29
3.8. Miscellaneous Metals

3.8.1. Gases in Metals

Sections 3.1., 3.1.1., and 3.3. list steels, and cast irons, respectively, chip form, certified for

nitrogen.

Sections 3.6.13 and 3.7.11.1. list titanium-base alloys, chip form and solid form, respectively,

certified for hydrogen, oxygen, or nitrogen.

Section 3.2.7. lists steels, solid form, certified for oxygen and nitrogen.

Certified for Nitrogen

Steels, (Chip Form), See Section 3.1. for details.

SRM Nitrogen

Nos. Name (Wt %)

8i 0.018

10g .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 Electric Furnace, 1.2C .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 (Crl3-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), See Section 3.1.1. for details.

SRM Nitrogen

Nos. Name (Wt %)

163 0.007

Cast Irons (Chip Form), See Section 3.3. for details. SRM Nitrogen

Nos. Name (Wt%)

5L 0.006 6g .006 7g .004 55e .004 107b Cast iron (Ni-Cr-Mo) (.008)

30
3.8.1. Gases in Metals (Continued)

Titanium Base (Chip Form), See Section 3.6.13, for details. SRM Nitrogen

Nos. Name (Wt %)

173a 6A1-4V 0.018 174 4Al-4Mn .012 176 5Al-2.5Sn .010

Zirconium Base Alloys, (Chip Form), See Section 3.6.15, for details. SRM Nitrogen

Nos. Name (Wt %)

360a 0.0043

Certified for Oxygen and Nitrogen or Hydrogen

Steels (solid form), See Section 3.2.7. for details.

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

SRM Oxygen Nitrogen

Nos. Name (ppm) (ppm)

1090 491 (60) 1091 Stainless steel (AISI 431) 131 (945) 1092 28 (3.6) 1093 60 (4807) 1094 4.5 (71)

Certified for Hydrogen or Oxygen

Titanium Base (solid form), See Section 3.7.11.1., for details. SRM

Nos. Name

Hydrogen

(Wt%)

Oxygen

(ppm)

352

353

354

355 356

Unalloyed

Unalloyed 6A1-4V AUoy

0.0032

.0098

.0215 3031 1332

31
3.8.2. High-Purity Metals

Very high-purity metals are being made available to fill the needs of analysts working with

determination of 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 and

solids mass spectroscopy, activation and resistivity methods.

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

reported.

Available in the series of high-purity metals are gold, platinum and zinc which provide

homogeneous reference materials for these important elements.

The gold is available in the form of wire and rod. The wire form, designated by (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, designated by (R), is intended for application in other methods of characterization.

The platinum is available as a high-purity material and as a doped composition material in wire

form only.

The 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 distil- lation, zone refining, and degasification. The zinc is supplied in the form of semicircular bar

segments.

SRM

Nos. Name Unit Size

(Norn

Cu

Chemia

inal Parts

Ni

il Compo

Per Millie

Srt

sitions )n by We

Pb

ight)

Zr

685W

685R

680L1

680L2

681L1

681L2

682

683

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

Doped-Platinum (Wire) High-Purity Zinc

1.4mm D x 102mm long

5.9mm D x25mm long

0.51mm D x 102mm long

0.51mm Dx 1.0m long

0.51mm D x 102mm long

0.51mm D xl.Om 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

<o.i

11

SRM

Nos. Ag

Chemical Compositions

(Nominal Parts Per Million by Weight)

Mg In Fe O Pd Au Rh Ir Cd Tl

0.007

.007

0.3

2

[2] [<2]

0.7 4 0.2 <1 <0.2 <p.oi

5 7 6 9 9 11

(0.1) 2.2

(0.1)

1.1 (0.2)

685W*

685R*

680L1

680L2

681L1

681L2

682* 683*

[0.1]

[-1]

.1

2.0

(0.02)

1.3

<1

12

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

32
3.8.3. Microprobe Standards

These standard reference materials 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.

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 standard gives the values

for tungsten and molybdenum as determined by analysis and a summary of homogeneity testing

results from approximately 1 500 determinations for tungsten and molybdenum by electron

probe microanalysis. Additional details on homogeneity characterization are given in NBS Misc.

Publ. 260-16. (See inside back cover for ordering instructions).

Gold-Silver

Six color-coded wires comprise this set, SRM 481, of standard reference materials. 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 set gives

the results of a cooperative program of analysis and a summary of the extensive homogeneity

testing carried out in certification of 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 483, is similar to the gold-silver set. In both sets, special

precautions were taken to achieve homogeneity on a microscopic scale.

Chemical Composition (Nominal Weight Percent) SRM

Nos. Name Unit Size Au Cu Ag w Mo

480 Tungsten-20 Mo

Alloy Wafer-1 mm D x 1 mm thick Wire-0.5mm Dx 50 mm long

Wire-0.5mm D x50 mm long

Wire-0.5mm D x 50 mm long

Wire-0.5mm D x 50 mm long

Wire-0.5mm D x50 mm long

Wire-0.5mm D x50 mm long

Wire-0.5mm D x 50 mm long

Wire-0.5mm Dx 50 mm long

Wire-0.5mm Dx50 mm long

Wire-0.5mm D x50 mm long

Wire-0.5mm D x 50 mm long

78.5 21.5 481 AulOO A 100.00

80.05 60.05 22.43

Au80-Ag20 B 19.96 39.92 77.58 100.00

Au60-Ag40 C

Au20-Ag80E

AglOOF

482 AulOO A 100.00

80.15 60.36 40.10

20.12

Au80-Ag20 B 19.83 39.64 59.92

79.85 100.00

Au60-Cu40 C

Au40-Cu60 D

Au20-Cu80 E CulOOF

33
3.41. Primary, Working, and Secondary

Standard Chemicals

These SRMs 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 [Rf. 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

Nos. Name Wt/Unit

(grams) Certified Use

Purity on

basis of

titration

17 Sucrose 60 Polarimetric Value a 40h Sodium Oxalate 60 Reductometric Value 99.95 41a Dextrose (D-glucose) 70 Reductometric Value b

83c Arsenic trioxide 75 Reductometric Value 99.99 84h Acid potassium phthalate 60 Acidimetric Value 99.99 136c Potassium dichromate 60 Oxidimetric Value 99.98 350 30 Acidimetric Value 99.98 950a Uranium oxide (U3O8) 25 Uranium Oxide Standard Value 99.94 951 Boric Acid 100 Acidimetric and Boron Isotopic Value 100.00

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

3.42. Micro-analysis Standards

This group of materials is 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 Section 3.8.3., Microprobe Standards.

SRM Wt/Unit Elements

Nos. Name (grams) Certified

140b 2 C,H

141b 2 N,C,H

142 Anisic acid 2 Methoxyl(CH3 0-) 143b 2 S,C,H,N 147 Triphenyl phosphate 2 P

148 2 N,C,H

34
3.43. Clinical Laboratory Standards

These standard reference materials 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.

SRM Wt/Unit

Nos. Name Purity (%) (grams)

911 Cholesterol 99.4 0.5 912 99.7 25 913 Uric acid 99.7 10 914 99.8 10 915 Calcium carbonate .... 99.9 20

3.44. Metallo-organic Compounds

This group of standard reference materials is intended for the preparation of solutions in oils of known and reproducible concentrations of metals. Since "matrix" effects do occur it is desirable to prepare the standard solutions in oil identical with or similar to the oil being

studied. Possession of an adequate collection of these metallo-organic standard reference

materials 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).

A certificate is supplied with each standard reference material giving the percentage of the

element of interest and directions for preparing a solution of known concentration in lubricatins

oil. Constituent Certified SRM Wt/Unit

Nos. Element (wt. percent) (grams) Name

1075a Al 8.1 5 Aluminum 2-ethylhexanoate

1051b Ba 28.7 5 Barium cyclohexanebutyrate 1063a B 2.4 5 Menthyl borate 1053 Cd 24.0 5 Cadmium cyclohexanebutyrate 1074a Ca 12.5 5 Calcium 2-ethylhexanoate 1078a Cr 9.7 5 Tris(l-phenyl-l,3-butanediono)chromium(III) 1055b Co 14.8 5 Cobalt cyclohexanebutyrate 1080 Cu 16.5 5 Bis(l-phenyl-l,3-butanediono)copper(II)

1079b Fe 10.3 5 Tris( 1-phenyl-l ,3-butanediono)iron(III) 1059b Pb 36.7 5 Lead cyclohexanebutyrate 1060a Li 4.1 5 Lithium cyclohexanebutyrate

1061b 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 Octaphcnylcyclotetrasiloxane 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 Dibuty Itin bis( 2-ethylhexanoate)

1052b V 13.0 5 Bis( 1-phenyl-l, 3-butanediono)oxovanadium(IV) 1073b Zn 16.7 5 Zinc cyclohexanebutyrate

35
3.45. Microstandard Ion-Exchange Beads

This standard reference material is an ion-exchange resin containing a known absorbed

quantity of metallic counterion. The actual amount of the counterion may be calculated from

the diameter of the resin bead. The individual beads are supplied in quantities of 100 or more

cast on a glass slide. A certificate is supplied which describes the method for ascertaining the

absolute amount of counterion absorbed on each individual bead.

SRM Counterion/Bead

Nos. Counterion Unit (grams)

1800 Ion-exchange beads- calcium .... 100 Beads 10-9 to 10- 11

3.51. Analyzed Gases

These standard reference materials are intended for the calibration of apparatus used for the

measurement of various components in gas mixtures. Each sample is certified accurately within

limits and is primarily intended to monitor and correct for long-term drifts in instruments used.

Vol/Unit

SRM (Liters Constituents Certified Nos. Name as STP)

1601 Carbon dioxide in nitrogen . . . 68 C02 , 308 ±3 ppm

1602 Carbon dioxide in nitrogen . . . 68 C02 , 346 ± 3 ppm

1603 Carbon dioxide in nitrogen . . . 68 C02 , 384 ±4 ppm

1604 Oxygen in nitrogen 68 02 , 3 ppm

1605 Oxygen in nitrogen 68 02 , 10 ppm

1606 Oxygen in nitrogen 68 02 , 112 ppm

1607 Oxygen in nitrogen 68 02

, 212 ppm

1608 Oxygen in nitrogen 68 02 , 978 ppm

1609 Oxygen in nitrogen 68 02, 20.95 mole percent

3.52. Analyzed Liquids

These materials are intended for use as standard reference materials for the analysis of liquids

for individual elements.

SRM Element Weight Vol/Unit

Nos. Name Certified percent (ml)

1621 Residual fuel oil ... S 1.05 100 1622 Residual fuel oil . . . S 2.14 100

36
3.53. 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 standard reference materials, SRM Nos. 592, 594, 596, and 598, are representative of typical virgin napthas and the odd numbered ones, SRM Nos. 593, 595, 597, and 599,

are representative of typical catalytically cracked naphthas in the C7 and C8 paraffin and

cycloparaffin series. Each standard reference material 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.

SRM Nos. 592 593 594 595 596 597 598 599

Blend No. 1 2 3 4 5 6 7 8

Unit (Ampoules) 1 ft 1U 1 ft 10 10 10 10 i n 1 ft 1 u

Hydrocarbon Volume Percent (Nominal)

HO 11 7/ 2-Methylhexane 23 25 3-Methylhexane 16 30

2,2-Dimethylpentane 4 2,3-Dimethylpentane 6 20

<; j

ao 3,3-Dimethylpentane 1 n-Octane 39 12 2-Methylheptane 19 25

16 23

8 8 3-Ethylhexane 3 3 4 9

5 5 6 9

6 57 32 Ethylcyclopentane 9 14 4 3

1,trans- 2-Dimethylcyclopentane 14 30

16 21 20 17

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

l,trans-4-Dimethylcyclohexane 11 14

l-Methyl-cis-2-ethylcyclopentane 7 20

1,1,3-Trimethylcyclopentane 5 4

1,trans- 2-cis-3-Trimethylcyclopentane . . 9 6

1, trans- 2-cis-4-Trimethylcyclopentane . . 5 13

37
3.54. Ores

These materials 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 as a matter of information. These standard reference materials are supplied in the

form of fine powders, usually passing a 100-mesh or finer sieve.

SRM Wt/Unit

Nos. Name (grams)

27e Iron, (Sibley) 100 28a Iron, (Norrie) 50

181 Lithium, (Spodumene) 45 182 Lithium, (Petalite) 45

183 Lithium, (Lepidolite) 45

25c Manganese 100

138 Tin (N.E.I. Concentrate) 50

113 Zinc (Tri-State Concentrate) . . . 50

Chemical Composition (Nominal Weight Percent)

Mn P P2 Os Si0 2 Li 2 0 Sn

Available Oxygen

66.58

57.85 0.22

3.65

2.36

6.4

4.3

4.1

16.7 74.8

61.1

Chemical Composition

(Nominal Weight Percent as the Oxide)

SRM

Nos. Name

Wt/Unit

(grams) A12 03 Fe 2 03 Ti02 Zr02 p2o5 v2 o5 Si02

69a Bauxite 50 55.0 5.8 2.78 0.18 0.08 0.03 6.01

SRM

Nos. Cr2 0 3 CaO

(Non

BaO

linal Weight Percent as the C

MgO I MnO

xide)

Na 2 0 K2 0 so3

Loss on

Ignition

69a 0.05 0.29 0.01 0.02 1 <0.01 <0.01 <0.01 0.04 29.55

38

3.55. Cements

These materials are furnished as standards for x-ray spectroscopic analysis and for chemical

analysis of cements and related materials. Because these materials are hygroscopic, each unit

consists of three sealed vials each containing approximately 5 g of material.

Chemical Composition

(Nominal Weight Percent as the Oxide)

SRM

Nos. Name

Wt/Unit

(grams) Si02 A12 03 Fe2 03 Ti02 p2 o5

1011 Portland 15 21.03 5.38 2.07 0.25 0.33 1013 15 24.17 3.30 3.07 .20 .20 1014 15 19.49 6.38 2.50 .25 .32 1015 15 20.65 5.04 3.27 .26 .05 1016 15 21.05 4.97 3.71 .34 .13

3.56. Minerals, Refractories, Carbides

and Glasses

This group of standards is 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.

3.56.1. Minerals

SRM

Nos. Name

Wt/Unit

(grams) Si0 2 Fe2 03 A1203 Ti02 MnO CaO

lb Limestone, argillaceous 50 4.92 0.75 1.12 0.046 0.20 50.9 88a Limestone, dolomitic 50 1.20 .28 0.19 .02 .03 30.1 70a Feldspar, potash 40 67.1 .075 17.9 .01 0.11 99a Feldspar, soda 40 65.2 .065 20.5 .007 2.14 97a Clay, flint 60 43.7 .45 38.8 1.90 0.11 98a Clay, plastic 60 48.9 1.34 33.2 1.61 .31

Chemical Composition

(Nominal Weight Percent as the Oxide)

3.56.2. Refractories

SRM

Nos. Name

Wt/Unit

(grams) SiO.

Chemical Composition

(Nominal Weight Percent as the Oxide)

Total as A1203 Fe 2 03 FeO Ti02

29.96 12.43 0.22

0.16 0.66 .02

.48 .74 .06

.84 7.07 .03

103a 198

199

104

Chrome refractory

Silica refractory . . Silica refractory . . Burned magnesite .

60

45

45

60

4.6

2.54

40
3.55. Cements (Continued)

(Values in parentheses are not certified but are given to provide additional information on the

chemical composition.)

Chemical Composition

(Nominal Weight Percent as the Oxide)

CaO

(+SrO) SrO MgO S0 3 Mn203 Na2 0 K2 0 Li 2 0 Rb2 0

Loss on

Ignition

SRM

Nos.

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

3.56.1. Minerals (Continued)

SrO MgO

0.14 0.36

.01 21.3

0.02

.18 .15 .039 .42

Chemical Composition

(Nominal Weight Percent as the Oxide)

Na20 K2 0

0.04 0.25

.01 .12 2.55 11.8

6.2 5.2 0.037 0.50

.082 1.04

Li,0 ZrOi BaO

Loss on SRM

p2 os co2 Ignition Nos.

0.08 40.4 41.1 lb

.01 46.6 46.7 88a

0.40 70a

0.02 0.25 99a

.36 13.32 97a

.11 12.44 98a

0.03

.03

0.11 .070 0.063

0.042

0.02

.26 .078

.03

0.06

3.56.2. Refractories (Continued)

Chemical Composition

(Nominal Weight Percent as the Oxide)

Zr02 MnO p2 o5 Cr2 03 CaO MgO Li2 0 Na2 0 K2 0

Loss on

Ignition

SRM

Nos.

0.01 0.11 0.01 32.06 0.69 18.54 103a <01 .008 .022 2.71 0.07 0.001 0.012 0.017 0.21 198

.01 .007 .015 2.41 .13 .002 .015 .094 .17 199

.43 .057 0.026 3.35 85.67 .001 .015 .015 104

41
3.56.3. Carbides

Chemical Composition

(Nominal Weight Percent) SRM

Nos. Name

Wt/Unit

(grams)

Cart

Total onFree

Sili Total SiC 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

3.56.4. Glasses

Chemical Composition

(Nominal Weight Percent as the Oxide)

SRM

Nos. Name

Wt/Unit

(grams) SK) 2 PbO A1 2 03 Fe2 03 ZnO MnO Ti0 2 Zr02 CaO BaO

89 Lead-barium . . 45 65.35 17.50 0.18 0.049 0.088 0.01 0.005 0.21 1.40 91 Opal 45 67.53 0.097 6.01 .081 0.08 .008 .019 .010 10.48 92 Low-boron . . . 45

93 High-boron . . . 45 80.60 1.94 .076 .027 .013

SRM

Nos. MgO K2 0 Na 2 0

89 0.03 8.40 5.70

91 .008 3.25 8.48 9293 .026 0.16 4.16

Chemical Composition

(Nominal Weight Percent as the Oxide)

P,02^5 As2 Os As2 0 3 SOq CI

Loss on

Ignition

0.70

12.76

0.23

.022 0.36.10

.14

0.03

.091

.085

0.03

.009

0.05 .014

.036

0.32 5.72

42
3.61. Nuclear Materials

3.61.1. Special Nuclear Materials

This group of standards consists of a plutonium sulfate tetrahydrate issued to provide a secondary standard for the assay of plutonium materials, a plutonium sulfate hydrate isotopic

standard with an isotopic analysis by mass spectrometry and intended for the calibration of mass

spectrometers, and a group of 16 uranium oxide standards ranging from 0.5% U-235 to 93.27%

U-235. Certificates of analysis giving isotopic percentage determined by mass spectrometry are furnished and the standards are intended to serve as calibration materials for the standardization

of mass spectrometers.

Standards are available to AEC contractors, AEC or State Licensees, and foreign governments

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

Civil Uses of Atomic Energy. The purchase request for these standards must be made on special

forms obtainable from the National Bureau of Standards, Office of Standard Reference Materials,

Washington, D. C. 20234.

SRM Wt/Unit Weight

Nos. Name Certified for (grams) Percent

(Pu)

944 Plutonium sulfate tetrahydrate Plutonium content 0.5 47.50

SRM

Nos. Name

Wt/Unit

(grams) 238 pu

Isotopic Al

239 Pu

Sundance (Ato

240 Pu

m Percent)

:41 Pu 242 Pu

948 Plutonium sulfate hydrate .... 0.25 Pu 0.011 91.477 7.910 0.569 0.0330

Atom Percent SRM Wt/Unit 234 u

235 u

236y 238

Nos. Uranium Oxide (U3O8) (grams) u

U-005 1.0 0.00218 0.4895 0.00466 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 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 1.0 .0993 15.307 .0660 84.528 U-200 1.0 .1246 20.013 .2116 79.651 U-350 1.0 .2498 35.190 .1673 64.393 U-500 1.0 .5181 49.696 .0755 49.711 U-750 1.0 .5923 75.357 .2499 23.801 U-800 1.0 .6563 80.279 .2445 18.820 U-850 1.0 .6437 85.137 .3704 13.848 U-900 1.0 .7777 90.196 .3327 8.693 U-930 1.0 1.0812 93.336 .2027 5.380

43
3.61.2. Neutron Density

This standard is provided as a reference source of a cobalt-in-aluminum alloy to serve as a neutron density monitor wire standard. Accurate determination of thermal neutron densities is essential in irradiation tests in obtaining 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 win: is 0.5 mm in diameter and is available in one

meter lengths (approximately 0.6 g), or in multiples thereof (continuous length).

SRM Cobalt Content

Nos. Name Unit (Weight Percent)

953 Wire 0.5 mm D * 1 meter long 0.116

or continuous multiples thereof

3.62. Isotopic Reference Standards

Standard reference materials for isotopic ratio are natural-ratio materials, unless otherwise

noted, and are furnished with a certificate of isotopic composition.

The isotopic composition of all the standards has been determined by mass spectrometry, by

comparison with mixtures prepared from high-purity separated isotopes. They are useful as standard reference materials 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 normal and enriched boric

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

for ordering instructions.)

SRM Element Wt/Unit

Nos. Name Certified (grams)

727 Rubidium chloride Rubidium 1.0 951 Boron 100 952 Boron 0.25 975 Chlorine .25 976 Copper .25 977 Sodium bromide Bromine .25 978 Silver .25 979 Chromium .25 980 Magnesium metal Magnesium .25 981 Lead metal, natural Lead 1.0 982 Lead metal, equal atom (206/208) Lead 1.0 983 Lead metal, radiogenic (92 percent lead-206) Lead 1.0

3.66. Ion Activity Standards

These standard reference materials are intended for use in the preparation of solutions for the

calibration of specific-ion electrodes. This includes the pH and pD measuring systems.

44
3.66.1. pH Standards

These materials 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.

The standards, 1861c and 18611b are certified for use in admixture only. At an equimolar

(0.025 molal) mixture of the two salts a pH(S) of 6.865 at 25 °C is obtained. Directions also are furnished for the preparation of a physiological reference solution having a pH(S) of 7.413 at 25 °C.

SRM

Nos. Name

pH(S)

(at 25 °C)

Wt/Unit

(grams)

185d 4.004 60

1861c see above 30

18611b see above 30 187a 9.180 30 188 3.557 60

189 1.679 65 191 30 192 10.01 30

3.66.2. pD Standards

These materials 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

Nos. Name

pD(S)

Values

Wt/Unit

(grams)

2186-1

2186-11 2191 2192

Potassium dihydrogen phosphate

Disodium hydrogen phosphate 7.43

10.74

30

30

30

30

45
3.71. Reference Organics

These chemicals are intended for use in identifying the products of organic or biochemical

reactions. They may also be used in reactions where small amounts of these rare or high-purity

organic chemicals are necessary for starting material.

Hydrocarbon blends prepared for the calibration of mass spectrometers and other instrumental

procedures are listed in Section 3.53.

3.71.1. Rare Organic Compounds

These compounds are intended for use in identifying products of organic or biochemical

reaction. They may also be useful in reactions where small amounts of these rare or high-purity

organic chemicals are necessary for starting material.

SRM Wt/Unit

Nos. Name (mg)

1591 1 ,2-0-Isopropylidene-/}-L-idofuranose .... 15 1592 l,2-0-Isopropylidene-/3-D-thieo-pentulose

(xylulose) 50

1593 L-Inositol 250

1594 500

3.71.2. Labelled Organic Compounds

These compounds are intended for use in identifying deuterated or partially-deuterated

products resulting from reactions, principally physico-chemical, of deuterium substituted

compounds.

SRM Volume/ Unit Nos. Name cm

3 at STP

2175 5 2176 Propane-l,l,l-d3 5

4. Standards of Certified Physical Properties

Mechanical and Metrology Standards

These standard reference materials 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.

1 "Concept of a National Measurement System," Science 158, 67-71 (1967).

46
4.1. Coating Thicknesses

Nominal thickness only is given below. The certified thickness appears on the cards accompanying the

samples.

4.1.1. Nonmagnetic Coatings on Steel, or Nickel on Nonmagnetic Substrate

These standards are intended to be used to calibrate coating thickness gages of the magnetic type

for the measurement of the thickness of nonmagnetic coatings on steel, nickel on steel, or nickel on

nonmagnetic substrate. The steel substrate has the magnetic properites of AISI 1010 steel and the

nickel coatings have the magnetic properties of an annealed Watts nickel electrodeposit free of

cobalt and iron.

The certified thickness is within ± 5 percent of the true thickness except for numbers 1301,

1302, 1303, and 1304, which have an uncertainty of ± 0.00003 in. Sets of either two or four standards mounted on one card are available in the specific

combinations that are requested most frequently.

OKM IN OS. Prev. Desig. Nominal Thickness Coating Substrate

(inch)

Type I 0-0.08 Nonmagnetic Magnetic

i in

i

U.UUU1U copper + chromium steel

i AAA A .UUU/j do ao

1 QA"3 IJVJ A D Ad .UUUjU QO GO

1 ~1C\A 1 3U4 AMA \A

.(JUL) Id QO ao

1305 AC .0010 do do

L-A .(JUIo QO GO

1 ir\i AD .UU/U AnQO ao

1 "jnft 1 JXJO .UUZ J QO ao

1309 CM .0027 do do 1310 CB .0032 do do

1311 cc .0055 do do

1312 CD .0080 do do

1313 DA .010 do do

1314 DB .015 do do

1315 DC .020 do do 1316 DD .025 do do

1317 HA .03 do do 1318 HB .04 do do

1319 HC .06 do do 1320 HD .08 do do

Type II 0-0.0025 Magnetic Magnetic

1331 BA 0.00012 nickel steel 1332 BB .00035 do do

1333 BC .00055 do do

1334 BD .00075 do do

1335 EA .0010 do do

1336 EB .0013 do do

1337 EC .0016 do do

1338 ED .0020 do do 1339 EE .0025 do do

Type III 0-0.002 Magnetic Nonmagnetic

1341 FA 0.00012 nickel/chromium brass 1342 FB .00035 do do

1343 FC .00065 do do

1344 FD .0010 do do

1345 FE .0015 do do

1346 FF .0020 do do

47
4.1 .1 . Nonmagnetic Coatings on Steel, or Nickel on

Nonmagnetic Substrate (Continued)

(Sets of Two Standards Mounted on One Caid) 1351 One each of 1307 and 1311 1352 One each of 1332 and 1334

1353 One each of 1335 and 1339

(Sets of Four Standards Mounted on One Card) 1361 One each of 1302, 1303, 1305 and 1307 1362 One each of 1306, 1310, 1311 and 1312

1363 One each of 1313, 1314, 1315 and 1316

1364 One each of 1317, 1318, 1319 and 1320

1365 One each of 1331, 1332, 1333 and 1334

1366 One each of 1335, 1336, 1337 and 1338

1367 One each of 1341, 1342, 1343 and 1344

4.1.2. Gold Coating Thickness Standards (Various Substrates)

These standards are suitable for calibrating thickness gages of the beta-backscatter type for the

measurement of the thickness of gold coatings. The weight of gold per unit area is certified.

Thickness equivalents are computed assuming a density of 19.3 g/cm 3 for the gold coating. Each

standard is a 15 mm square and is mounted on a card with the certified weight per unit area and

equivalent thickness printed below it. The certified coating weights are within ± 5 percent of the

actual weight per unit area at the center of the specimen.

Sets of either two or four standards are available in the specific combinations that are requested

most frequently. Gold assay: 99.9%, certified.

SRM

Nos.

Nominal Coating

Weight

(mg/cm^)

Nominal Thickness

(microinches)

Substrate Material

1371 1.5 30 Fe-Ni-Co Glass Sealing Alloy3 1372 3.0 60 Fe-Ni-Co Glass Sealing Alloy 1373 6.0 120 Fe-Ni-Co Glass Sealing Alloy 1374 14.0 280 Fe-Ni-Co Glass Sealing Alloy

^The sealing alloy conforming to ASTM Designation F15; 53% iron, 29% nickel, and 17% cobalt

(available under various trade names), is commonly used for making hermetic seals to glass in electronic applications.

(Sets of two standards mounted on one card) 1381 One each of 1371 and 1372

1382 One each of 1372 and 1373

1383 One each of 1373 and 1374

(Sets of four standards mounted on one card) 1398 One each of 1371, 1372, 1373, and 1374

Nominal Coating

SRM Weight Thickness Substrate Material Nos. (mg/cm^) (microinches)

1375 1.5 30 Nickelb

1376 3.0 60 Nickel 1377 6.0 120 Nickel 1378 17.0 350 Nickel

DThe gold coating is electrodeposited on either an all nickel substrate about 15 mils thick or on a 2-mil thick nickel coating that has been electrodeposited on steel (AISI 1010). The nickel for either substrate is electrodeposited from a Watts nickel plating solution and buffed prior to the gold plating.

(Sets of Two Standards Mounted on One Card) 1384 One each of 1375 and 1376

1385 One each of 1376 and 1377

1386 One each of 1377 and 1378

(Sets of Four Standards Mounted on One Card) 1399 One each of 1375, 1376, 1377 and 1378

48
4.2. Density Standards

These standard reference materials 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 standards may be

used to calibrate picnometers, and density balances. A certificate is supplied with each of these

samples. 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

Nos. Name Approx.d20 Amount, ml

217b-5 0.6918 5 217b-8S .6918 8

21 7b-25 2,2,4-Trimcthylpentane .6918 25 217b-50 .6918 50

4.3. Glass Spheres for Particle Size

See Section 5.3.1., page 60.

4.4. Glass Viscosity Standards

Standard reference materials 710, 711, and 717 are furnished as rectangular-shaped bars, and

are certified for viscosity between values of IO2 and 1 0j 2 poises. They are furnished to check

the performance of high-temperature viscosity equipment (rotating cylinders) and lowtemperature viscosity equipment (fiber elongation). In addition, values are furnished for the

softening point, annealing point, and strain point by ASTM Designations (C388-61 and C336-61).

Certificates of data from 8 laboratories are furnished for these two glasses.

Standards 712, 713, 714, 715, and 716 are furnished in cone, 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 these glasses.

SRM Unit of

Nos. Name Issue

710 2 lb 711 3 lb 712 0.5 lb 713 Dense barium crown 620/603 glass, 1 3/8 in diam x 5/8 in thick gobs (4 pes.) .5 lb 714 .51b 715 200 g 716 250 g 717 500 g

SRM

Viscosity (Poises at Indicated Temperature (° C)

102 103 104 106

Softening Annealing Strain Nos. 105 10? 108 109 1010 ion 1012 Point Point Point °C °C °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

49
4.5. Polystyrene Molecular

Weight Standards

Two samples of polystyrene are available for use in calibrating non-absolute techniques of

measuring the number-average (Mn ) and weight-average (Mw ) molecular weights. Also these

polymeric samples can be used for determining the feasibility of some fractionating techniques

since the ratios of the Mn , Mw , and Z-average molecular weight are also given. The intrinsic

viscosities at a high rate of shear both in benzene and cyciohexane are also stated. In addition, these samples represent highly purified polystyrene samples for polymeric research

requiring the following chemical characteristics:

Standard 705 has a relatively narrow molecular weight distribution with a Mw 1.8 x 10s

. The

sample was prepared by the polymerization of styrene in benzene using- butyl lithium as an

initiator. Ash content and volatiles are 0.05 and 0.5 percent, respectively. The polystyrene is in pellet form, each pellet weighing about lOmg.

Standard 706 has a reasonably broad molecular weight distribution, the ratio Mw/Mn being

2.1, and an Mw of 2.7 x 10 s

. The sample was prepared by the thermal polymerization of

styrene at 140 °C to 37 percent conversion. Ash content and volatile content are 0.001 percent

and 0.8 percent respectively. The polystyrene is in pellet form, each pellet weighing about

80 mg.

SRM Wt/Unit

Nos. Description (grams)

705 Polystyrene, narrow molecular

2 706 Polystyrene, broad molecular

18

Heat Standards

These standard reference materials are intended to relate heat and temperature measurements

made in industrial, university and government laboratories with the International Practical

Temperature Scale 1 and with units of work associated with the mechanical equivalent of heat.

International Practical Temperature Scale of 1968, Metrologia, 5, 35-44 (1969).

4.21. Freezing-Point Standards

4.21.1. Defining fixed points - International

Practical Temperature Scale

These standard reference materials are of such purity that they are suitable for defining fixed

points for the International Practical Temperature Scale of 1 968. 1

"Concept of a National Measurement System," Science 158, 67-71 (1967).

Value assigned to de- SRM fining fixed point °C Wt/Unit

Nos. Kind (IPTS-1968) (grams)

740 Zinc .... 419.58 350

50
4.21.2. Secondary Reference Points

These standard reference materials 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.

These are intended for the calibration of resistance thermometers and thermocouples.

SRM Determined freezing Wt/Unit

Nos. Name point °C (IPTS-1948) (grams)

44e Aluminum 660.0 200 45d 1083.3 450

49e 327.417 600

42f Tin 231.88 350

4.22. Calorimetric Standards

These standard reference materials 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).1 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.

^NBS Handbook 102 "ASTM Metric Practice Guide," Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20604. Price 40 cents.

4.22.1. Combustion Calorimetric

Standards

These standards are issued primarily to check the performance of calorimetric methods for the

determination of the heat of combustion. Standard Reference Material 2 1 7b-8S is contained in a special ampoule with an internal break-off tip, the others are sealed "in vacuum" in a plain glass

ampoule.

SRM Unit Nos. Name 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

1651 Zirconium-barium chromate heat 50 g 1652 Zirconium-barium chromate heat 50 g 1653 Zirconium-barium chromate heat 50 g

51
4.22.2. Solution Calorimetric Standards

This standard is issued primarily to check the performance of calorimetric methods used f< the determination of heats of solution and heats of reactions in solution.

SRM Unit

Nos. Name Amount

724 Tris(hydroxymethyl)aminomethane .... 50 g

4.22.3. Heat Source Calorimetric Standards

These standards are intended primarily for the calibration of calorimeters used to determine

the change of energy or work with changes of temperature and changes in physical state.

4.23. Vapor Pressure Standards

These materials 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.

4.23.1. Gold

The vapor pressure of high-purity gold SRM 745 has been accurately determined over the

pressure range 10.3 to 10.8 atm and over the temperature range 1300 to 2100 °K. SRM 745 should

be of particular interest to laboratories making high-temperature vapor pressure measurements using

the Knudsen, torque Knudsen, or mass spectrometric techniques.

SRM

Nos. Description Unit Size

745 Gold-Vapor Pressure Standard Wire 1.44 mm (0.055 in) D x 152 mm (6 in) long
Optical Standards

4.41. Color Standards for

Spectrophotometer—Tristimulus

Integrator Systems

This set of 5 transparent colored glass standards is available to check the performance of

spectrophotometer-tristimulus integrator systems, the automatic recording and computing devices

used in routine color measurements. The set consists of five 2-inch (5 cm) square glass filters (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 standards the user of a spectrophotometer-integrator combination will be able not only to determine when the instrument goes out of adjustment, but also from the

pattern of the discrepancies between measured and reported tristimulus values, to obtain some

clue as to the type of maladjustment.

The glasses are available only in sets of five.

SRM

Nos. Name Unit Size

2101 Supplied only as a 2102 Signal yellow glass set - one each of 2103 5 filters 2104

2105

4.42. Phosphors

These materials are issued without certification. They are issued so that those interested in developing methods of measurement for phosphor materials can work on a common source of

materials. Technical Note 417, "Spectral Emission Properties of NBS Standard Phosphor Samples

Under Photo-Excition," which may be purchased from Superintendent of Documents. U.S.

Government Printing Office, Washington, D.C. 20402, price 25 cents, provides detailed

information on these materials.

SRM Wt/Unit

Nos. Name (grams)

1020 Zinc sulfide phosphor 14 1021 28 1022 Zinc sulfide phosphor 14 1023 Zinc-cadmium sulfide phosphor (Ag activator) 14 1024 Zinc-cadmium sulfide phosphor (Cu activator) 14 1025 Zinc phosphate phosphor 28 1026 Calcium tungstate phosphor 28 1027 Magnesium tungstate 28 1028 Zinc silicate phosphor 28 1029 Calcium silicate phosphor 14 1030 Magnesium arsenate 28 1031 Calcium halophosphate

28 1032 Barium silicate phosphor 28 1033 Calcium phosphate phosphor .... 28

53
4.43. Thermal Emittance Standards

Standards of normal spectral emittance are available in three materials, platinum- 13 percent

rhodium alloy having low emittance, sandblasted and oxidized Kanthal (an iron-chromiumaluminum alloy) having intermediate emittance, and sandblasted and oxidized Inconel (a nickelchromium-iron alloy) having high emittance. Standards of all three materials have been calibrated

for normal spectral emittance at 800 and 1100K; the Kanthal and Inconel standards at 1300 K

and the platinum- 13 percent rhodium at 1400 and 1 600 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 standards is supplied in the fifteen to thirty-five micron range at 1 100 K.

SRM

Nos. Name 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 2 in x 2 in squares Pt-13% Rh

1408 Emittance standards 1 in x 10 in strips Pt-13% Rh

1409 Emittance standards 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 Emittance standards 1 1/4 in disks Kanthal 1425 Emittance standards 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 Emittance standards 1 in disks Inconel 1443 Emittance standards 1 1/8 in disks Inconel 1444 Emittance standards 1 1/4 in disks Inconel 1445 2 in x 2 in squares Inconel

4.44. Refractive Index Standards

These standard reference materials 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(0, ,D 2 ) at 20, 25, and 30 °C to ±0.00002. A certificate is supplied with each of these

samples. 2 1 7b-8S is contained in a special ampoule with an internal breakoff tip, the others are sealed "in vacuum" in plain glass ampoules.

SRM

Nos. Name a 20

Approx. n rj

Quantity

(ml)

217b-5 2,2,4-Trimethylpentane 1.3915 5 217b-8S 2,2,4-Trimethylpentane 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. For details see Section 4.2.

54
4.51. Radioactivity Standards

Because of the nature of these materials, all, except the carbon- 14 dating standard, are shipped

only by express or air freight (shipping charges collect).

A certificate containing pertinent information is sent under separate cover. Information

concerning the standard appears on the standard or container.

4.51.1. Alpha Standards

These samples consist of a practically weightless deposit of the nuclide on a thin platinum foil 1.27-cm in diameter, which is cemented onto a monel disk 2.54-cm in diameter and 0. 16-cm

thick. Those samples marked with an asterisk can only be distributed to those who hold specific

Byproduct Material, Source Material or Special Nuclear Material licenses from the AEC, and a copy of the license must be on file at the National Bureau of Standards before orders can be

filled.

SRM Nominal Activity at Time of Nos. Radionuclide Calibration (Month, Year)

4906 Plutonium-238 1.4 x 103 to 3.4 x 10

4

nt/s (4/69)

4.51.2. Beta-Ray and Gamma-Ray

Gas Standards

These samples contain Krypton-85 in inactive krypton at a pressure of about one atmosphere

in a glass break-seal ampoule. The activity is such that a copy of the purchasers current

Byproduct Material License as required by the Atomic Energy Act of 1954 is required.

Approximate Activity

SRM Calibration or Emission Rate at Approx.

Nos. Radionuclide Radiation Time of Calibration Volume

(Month, Year)

4935-C Krypton-85 r 7 x 107 nt/s per mole (7/69) 10 ml

*4235 Krypton-85 y 1 x 10

7 nt/s (9/69) 3 ml

55
4.51.3. Beta-Ray, Gamma-Ray, and ElectronCapture Solution Standards

These standard reference materials are contained in flame-sealed ampoules. The calibration

radiation listed is the radiation for which the radionuclide is intended to be used as a standard.

Those samples with the identification number marked by an asterisk require a copy of the

purchaser's current AEC Byproduct Material License as required by the Atomic Energy Act of

1954. Total activity of the other samples is such that they may be ordered singly under the

general licensing provisions.

Approximate Activity Approximate

SRM Calibration or Emission Rate at Weight of Nos. Radionuclide Radiation 1 inie ol Calibration Solution (Month, Year) (grams)

4921-C Sodium-22 a+P 1 x 10 j3 /s/g (8/64) 3 Hy LZ.-H, 7

7 x i n R into (T,if,i\ 4924 Carbon-14 (Water) P~ 1 x 10

3 d/s/g (7/58) 25 4925 Caibon-14 (benzoic acid in toluene) . . P~ 2x 10

4

d/s/g (7/58) 3 4926 Hydrogen-3 (Water) P~ 9 x 10 3 d/s/g (9/61) 25 4927 Hydrogen-3 (Water) r 9 x 10

s d/s/g (9/61) 3 4929-B Iron-55 X 2x l(f d/s/g (5/64) 3 4940-B Promethium-147 r 5 x 10

4

d/s/g (11/67) 3 4941-C Cobalt-57 7 3 x 10

s nt/s/g (3/69) 5 4943 0" 1 x 10

4 |37s/g(1962) 3 4947 P~ 3 x 10

s d/s/g (2/64) 4 4948 P~ 2x 10

5 d/s/g (12/65) 3.3 4222 Carbon-14 (n-hexadecane) P~ 4 x 10

4 d/s/g (6/67) 3 4223 Carbon-14 (n-hexadecane) P~ 4 x 10

3 d/s/g (6/67) 3 4224 Carbon-14 (n-hexadecane) P~ 4 x 102 d/s/g (6/67) 3 4225 Tin-113-Indium-113m i 1 x 10

s 7/s/g (4/68) 5 *4226 Nickel-63 P~ 1.5 x 10

6 nt/s/g (5/68) 4

56
4.51.4. Point-Source Gamma-Ray Standards

This group of standard reference materials is usually prepared by depositing the activity

between two layers of polyester tape approximately 0.006-cm thick and mounted on aluminum

annuli, 0.8-cm wide and 5.5-cm outside diameter. The thorium standards are between gold foil which is sandwiched between two double layers of polyurethane-film tape.

Those samples with the identification number marked by an asterisk require a copy of the

purchaser's current Byproduct Material License as required by the Atomic Energy Act of 1954.

The total activity of the other samples is such that they may be ordered singly under the general

licensing provisions.

Approximate Emission Rate SRM Radionuclide at Time of Calibration Nos. (Month, Year)

4991-C Sodium-22 6x10 - 1.28-MeV 7/s (4/69) 4995-C Mercury-203 1.5 x 105 7/s (6/69) 4996-B Sodium-22 3 x 10s

- 1.28-MeV 7/s (6/69) 4997-D Manganese-54 5 x 10

4 7/s (6/66) 4998-E Yttrium-88 1 x 10

s

- 1.84-MeV 7/s (5/69) 4999-D Cerium- 139 2 x 10s 7/s (7/67) 4200-B 6 x 10

4 7/s (12/68)

4202 Cadmium-109 1 x 10

s 7/s (12/67)

4203-A Cobalt-60 3 x 10

s 7/s (8/66)

K 4203-B Cobalt-60 7 x 10

s 7/s (8/66) 4205 Thorium- 228 2 x 10

4

- 2.615-MeV7/s (8/68) 4206 Thorium-228 2 x 10 5

- 2.615-MeV 7/s (8/68) "4207 Cesium- 137 4 x 10

s 7/s (12/68)

4208 Mercury-203 6 x 10s 7/s (6/69) 4209 Yttrium-88 4 x 10

5

- 1.84-MeV 7/s (5/69) H210 Cobalt-60 2 x 10

6 7/s (4/69)

4.51.5. Radium Solution Standards

(for Radon Analysis)

These samples are contained in flame-sealed glass ampoules.

Nominal Radium Content Approximate

SRM Nos. (in micrograms) weight, grams

4955 0.1 5 4956 0.2 5 4957 0.5 5 4958 1.0 5 4959 2.0 5 4960 10 5 4961 10 5 4962 20 5 4963 50 5 4964-B 102 5

57
4.51.6. Radium Gamma-Ray Solution

Standards

(Recalibrated as of September 1967)

These samples are contained in flame-sealed glass ampoules.

SRM Nos. Radium Content (in grams)

Approximate

weight, grams

4950-B 4951 495 2-

4953

10 " 10"11 Blank solution 10~8

20 100 100

20

4.51.7. Contemporary Standard for

Carbon- 14 Dating Laboratories

SRM No. Description

4990-B 1 lb of oxalic acid; no specific activity is given

NOTE: These samples are shipped parcel post, prepaid to domestic and overseas purchasers.

4.86. Mossbauer Standards

This standard reference material is intended to furnish a base (zero) point for Mossbauer

spectrometry. It is furnished as a platelet 1 cm X 1 cm X 0.0775 cm cut from a single crystal of

sodium nitroprusside along the 100 crystal plane. The natural iron concentration is 25.0 mg/cm2 ± 4 percent. This standard reference material has an a"\erage value for the chemical shift of 0.0000 ± 0.0002 cm/sec, and an average value for the electric quadrupole splitting of 0.1726 ± 0.0002 cm/sec

at 25 °C.

SRM No. Name

725 Mossbauer Differential Chemical Shift for Iron-57 (Sodium Nitroprusside)

58
5. Engineering Type Standards

These standard reference materials 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.

5.1 . Standard Rubbers and

Rubber-Compounding Materials

These standard reference materials 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 since the properties

of different lots are not the same. Replacement lots of rubber-compounding materials impart

essentially the same characteristics to rubber vulcanizates so that certificates are not issued for

these materials.

5.1.1. Standard Rubbers

SRM Wt/Unit

Nos. Name (grams)

385b 34,000

386g Styrene-butadiene, type 1500 34,000 388e Butyl 34,000 389 Styrene-butadiene, type 1503 34,000

391 25,000

5.1.2. Rubber Compounding Materials

SRM Wt/Unit

Nos. Name (grams)

370d Zinc oxide 8,000 371f Sulfur 6,000

372g 3,200 373e 2,000 375f Channel Black 28,000 376a Light magnesia 450

377 Phenyl-beta-naphthylamine 600

378a 28,000 379 5,500 380 6,000

381 Calcium silicate 4,000 382a 40,000 383 3,200 384 N-tertiary-Butyl-2-benzo- thiazolesulfenamide 3,200

59
5.2. Electric and Magnetic Standards

5.2.1. Reference Magnetic Tapes

These reference magnetic tapes are intended for use in evaluating the performance of magnetic

computer tapes and maintaining control over their production.

SRM

Nos. Name Unit of Issue 3200 Secondary standard magnetic tape -computer

amplitude reference Reel

5.3. Sizing Standards

5.3.1. Glass Spheres for Particle Size

SRM Wt/Unit

Nos. Name (grams)

1003 40-45 1019 100

5.3.2. Turbidimetric and Fineness Standard

This standard reference material 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 ten units. Each unit

consists of two sealed vials, each containing approximately 10 grams of cement. This standard is supplied only in sets of ten units or multiples thereof.

SRM

Nos. Kind Certification Unit of Issue

114L Turbidity and fineness standard, cement

Residue on No. 325 sieve, bronze cloth, wet method

Residue on No. 325 sieve, electrofornied sheet (44.0 /im), wet method

Surface area (Wagner turbidimeter) Surface area (Air-permeability) Mean particle diameter (Air-permeability)

6.8 percent

12.2 percent 1820 cm

2 /g 3380 cm

2 /g 5.64 jUm

Set of

ten units (20 vials)

60
5.4. Color Standards

5.4.1. The ISCC-NBS Centroid

Color Charts

The ISCC-NBS centroid colors are available to illustrate a characteristic color for each of the

ISCC-NBS color-name blocks in the Color Names Dictionary, NBS Circular 553. The Color

Names Dictionary, 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, price $2. The color chart set, along with

the table containing the history of the color-names project, the centroid number and the Munsell

renotation of each of the 25 1 color chips included, constitutes the Supplement of the Color

Names Dictionary. 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

Nos. Name Unit of Issue

2106 Centroid color charts Set of 18 charts

5.4.2. Standard Colors for Kitchen

and Bathroom Accessories

These commercial standards establish certain colors having the greatest general acceptance.

They provide references whereby manufacturers can produce, and buyers can stock, items of

colored kitchen and bathroom accessories with assurance that the purchaser can obtain from

different sources and at different times, materials that will match one another in color.

SRM

Nos. Name Unit of Issue

1000 Enameled iron plaques, 3 by 5 inches, in accordance with Commercial Standards CS62-38 andCS63-38 Set of 10

61
5.4.3. Paint Pigment Standards for

Color and Tinting Strength

Material standards are the most practical means of designating color, tinting strength, and

character of tint of paint pigments. The present series of color pigment standards has been

developed for that purpose. Reference is made to these standard materials in the Federal

Specifications for pigments. Methods of making the required color comparisons between standard

and the delivered product are set forth in detail in the certificate supplied with each sample. The

procedures given are similar to those covered by Methods 4220 and 4221 of Federal Standard

141 and by ASTM Designation D387-60.

SRM

Nos. Name

Wt/Unit

(grams)

SRM

Nos. Name

300

301 302

303

304

305

306

307 308 309

310

311 312

313

314

Toluidine red toner Yellow ocher Raw sienna Burnt sienna Raw umber

Burnt umber

Venetian red

Metallic brown

Indian red Mineral red

Bright red oxide Carbon black (high color) . . . Carbon black (all-purpose) . .

Black iron oxide Yellow iron oxide, light lemon

40

45

4550

45

506060

50

6550

10 20

42

20

315 316

317

318 319

320

321 322

323

324

325

326

327 328

Yellow iron oxide, lemon

Yellow iron oxide, orange Yellow iron oxide, dark orange Lampblack

Primrose chrome yellow

Lemon chrome yellow

Medium chrome yellow

Light chrome orange Dark chrome orange Ultramarine blue

Iron blue Light chrome green Medium chrome green Dark chrome green

5.4.4. Phosphors

A series of 14 phosphors are available, without certification, to provide a common source of

materials for persons working with methods for measurement of phosphor materials.

Details are given in Section 4.42.

5.4.5. Light-Sensitive Papers

and Plastic Chips

5.4.5.1. 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

exposure 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. 260-15, which describes

the preparation and use of the materials, is furnished with each booklet.

SRM

Nos. Name Unit of Issue

700b Light-sensitive paper Pkg. of 100 pieces - 2 5/8 in x 3 1/4 in 701b Standard faded strips .... Booklet - 6 strips 1 1/4 in wide

62
5.4.5.2. 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

Nos. Name 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

5.50. Miscellaneous Standards

5.50.1. Microcopy Resolution Test Charts

These charts are used to test the resolving power of cameras or of whole microcopying

systems. They are printed photographically on paper, and have high-contrast five line patterns

ranging in spatial frequency from one cycle per millimeter to 18 cycles per millimeter.

Instructions for the use of the charts are supplied with each order.

SRM

Nos. Name Unit of Issue

1010a Microcopy resolution test charts Set of 5 charts

5.50.2. Surface Flammability Standard

This standard 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 = 210; Heat Evolution Factor, Q = 46.8.

SRM

Nos. Name Unit of Issue

1002b 4 specimens, 6x18 inches

63
5.50.3. Internal Tearing Resistance

Standard Paper

This standard 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 standard is sold only on a subscription basis in sets of four packages or multiples thereof.

SRM

Nos. Name Unit of Issue

704a Internal tearing resistance paper Sets of 4 packages

64
U. S. Department of Commerce

Maurice H. Stans

Secretary

APPENDIX 1. TYPICAL CERTIFICATE OF CHARACTERIZATION

National Bureau of Standards

L. M. Branscomb, Director

STANDARD REFERENCE MATERIAL 122e

Cast Iron Car Wheel

C Mn P S Si Cu Ni Cr V Mo Ti N As

acid

;ion o

ANALYS1

Total

Graphitic Persulfate

arsenite Combustioi lodate Perchloric

dehydral

Photometr: Photometr: Photometr:

Distillatior

titration

1 3.50 2.78 0.527 0.347* 0.073 0.511 b 0.034= 0.078d 0.038e 0.032f 0.001 0.026= 0.009 ().018 h

2 3.52 2.77 .528 .351' .074 .510 .032i .082k

Average 3.51 2.78 0.528 0.349 0.074 0.510 0.033 0.080

Molybdenum-blue photometric method. Double dehydration.

Diethyldithiocarbamate photometric method. Dimethylglyoxime photometric method. Chromium separated from the bulk of the iron in a

10-g sample by hydrolytic precipitation with NaHCOs.

Persulfate oxidation and potentiometric titration with

ferrous ammonium sulfate solution.

Vanadium separated from the bulk of the iron by mercury cathode, oxidized with KMnO» and titrated potentiometrically with ferrous ammonium sulfate

solution. Diantipyrylmethane photometric method.

Activation analysis. Alkalimetric method. Neocuproine photometric method. Weighed as nickel dimethylglyoxime.

List of Analysts

1. J. R. Baldwin, B. B. Bendigo, S. A. Wicks, aiid B. A. Thompson, Analytical Chemistry Division, Institute for Materials Research, National Bureau of Standards.

2. R. N. Smith and R. E. Deas, American Cast Iron Pipe Company, Birmingham, Alabama.

The overall direction and coordination of the technical measurements leading to certifica- tion were performed under the chairmenship of O. Menis and J. I. Shultz.

The technical and support aspects involved in the preparation, certification and issuance of

this Standard Reference Material were coordinated through the Office of Standard Reference

Materials by R. E. Michaelis.

The iron for the preparation of this standard was furnished by the American Cast Iron

Pipe Company, Birmingham, Alabama.

Washington, D. C. 20234 J. Paul Cali, Acting Chief

November 6, 1969 Office of Standard Reference Materials

65
APPENDIX II.

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 650 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 main functions of the NBS Institute for Materials Research is to develop, produce,

and distribute standard reference materials which 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 and industry 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 or industry.

The National Bureau of Standards recognizes and has 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 far exceed the Bureau's

capacity for development. Therefore, requests for new Standard Reference Materials which will have limited use and for which the need is not very great will have to be passed by 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.

66
INFORMATION NEEDED

Those requesting the development of new Standard Reference Materials should supply as much

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 NBS.

(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.

67
INDEX

Page

Alloys, Aluminum Base Giip Form 18

Alloys, Cobalt Base Chip Form 18

Alloys, Copper Base Chip Form 18

Solid Form 24

Alloys, Ferro (Steelmaking) 16

Alloys, Gold Base

Solid Form (Microprobe) 33

Alloys, Iron Base Chip and Granular Form 4.

Solid Form g. Alloys, Lead Base Chip Form

Solid Form 18

Alloys, Magnesium Base Chip Form 20

Alloys, Molybdenum Base

Solid Form (Microprobe) 33

Alloys, Nickel Base Chip Form and Oxides 20

Solid Form 26

Alloys, Platinum Base

Solid Form 32

Alloys, Selenium Base Granular Form 20

Alloys, Silver Base

Solid Form (Microprobe) 33

Alloys, Tin Base Chip Form 22

Solid Form 27

Alloys, Titanium Base Chip Form 22

Solid Form 27

Alloys, Tungsten Base

Solid Form (Microprobe) 33

Alloys, Zinc Base Chip Form 22

Solid Form 28

Alloys, Zirconium Base Chip Form 22

Solid Form 29 Aluminum

Al-Co Alloy (Neutron Density Monitor Wire) 44

Al-Si Alloy 18

Casting Alloy 18

Freezing Point Standard 5] Metallo-organic Compound 35 Ore (Bauxite) 38 Wrought Alloy 18 Analyzed Gases Carbon Dioxide in Nitrogen 35 Oxygen in Nitrogen 3g

Arsenic Trioxide (Oxidimetric Value) 34

Barium

Metallo-organic Compound 35 Bauxite (Aluminum Ore) 38 Boron

Boric Acid 34. Boric Acid (B-10 Enriched) 44

Metallo-organic Compound 35

Cadmium

Metallo-organic Compound 35 Calcium

Carbonate (Clinical) 35 Carbonate (Rubber Compounding) 59

Metallo-organic Compound 35 Microstandard Ion Exchange Beads 36 Molybdate (Steelmaking) 16

Silicate (Rubber Compounding) 59

Calorimetric Standards Combustion Calorimetric

7 Benzoic acid 51 14 2,2,4-trimethylpentane 51 Heat Source

s Zirconium-barium chromate 51 Solution Calorimetry

Tris(hydroxymethyl)aminomethane 52 Cane Sugar (Sucrose) 34

Carbides

Silicon (Refractory) 42

Carbon

Channel Black (Rubber Compounding) 59

Conducting Black (Rubber Compounding) 59

Gas Furnace Black (Rubber Compounding) 59

Oil Furnace Black (Rubber Compounding) 59 Carbon Dioxide

in Nitrogen 35 Carbon Steels 4.9 Cast Irons

Blast Furnace jg Car Wheel 14 Chip Form 14 Copper-Nickel-Chromium 14

Ductile 14-17 Gray 14

High Phosphorus ]4 Nickel-Chromium ]4

Nickel-Chromium-Molybdenum 14 Nodular . 14

Solid Form 16 White 14

Cast Steel 16 Cements

Portland (Chemical Composition) 4] Portland (Turbidimetric and Fineness) 60

Ceramic Materials Carbides 42

Glasses 42

Minerals 40

Refractories 40

Chemical Composition, SRMs Certified for 4.46 Chemical Standards Primary Acid potassium phthalate 34

Arsenic trioxide 34 Benzoic acid 34

Boric acid 34 Dextrose (D-Glucose) 34 Potassium dichromate 34 Sodium oxalate 34

Sucrose 34 44 Uranium oxide 34

Intermediate Purity

Rubidium Chlorine 44

68
Page Page

Selenium 20

Zinc 22

Chlorine, Isotopic Reference Standard 44 Chromium

Ferro (Steelmaking) 16

Metallo-organic Compound 35

Nitrate

(Isotopic Reference Standard) 44

Refractories 40

Clays

Flint 40

Plastic 40

Clinical Laboratory Standards Calcium carbonate 35

Cholesterol 35

Creatinine 35 Urea 35

Uric acid 35 Coating Thickness Copper on Steel 47

Gold on Fe-Ni-Co Glass Sealing Alloy 49 Gold on Nickel 49

Nickel on Brass 47;48

Nickel on Steel 47;48

Cobalt Co41-Mo4-Nb3-Tal-W4 Alloy 18

Metallo-organic Compound 35 Color Standards For Kitchen and Bathroom Accessories 61 For Paint Pigment Color and Tinting Strength 62 For Spectrophotometer - Tristimulus Integrator Systems 53 The ISCC-NBS Centroid Color Charts 61 Copper

Beryllium Copper Alloys

CABRA alloy 165-170 24 CABRA alloy 25-172 24 CABRA alloy 10-175 24

Brass, Aluminum 24

Brass, Cartridge 24

Brass, Free Cutting 24

Brass, Naval 24

Brass, Red 24

Brass, Sheet 18 Bronze, Cast 18

Bronze, Commercial 24

Bronze, Leaded Tin 18

Bronze, Ounce Metal 18

Bronze, Silicon 18

Coating Thickness (on steel) 47;48

Freezing Point 5 ] Gilding Metal 24

Linear Thermal Expansion

Metal (Isotopic Reference Standard) 44

Metallo-organic Compound 35 Microprobe (Gold-Copper Wires) 33

Nickel Silver alloy (Cu58-Nil2-Zu29) 18

Density Standards

2,2,4-trimethylpentane 49

Dextrose (Glucose) 34

Discontinued and Renewal SRMs (Policy) 2

Ductile Iron 14-] 7

Engineering Properties, SRMs Certified for 58-64

Feldspars Soda 40

Potash 40

Flammability Standards 63

Freezing Point Standards Aluminum 51 Copper 5] Lead 5 ] Tin 51 Zinc 50

Gases, Analyzed Carbon dioxide in nitrogen 36 Oxygen in nitrogen 36

Gases, in metals

Iron Alloys 30

Steels 30

Titanium Alloys 31 Zirconium Alloys 31

Glass, Composition Standards High-boron 42

Lead-barium 42 Low-boron 42

Opal 42

Spheres for sieve calibration 60

(see also sizing standards)

Viscosity Standards 49

Glucose (Dextrose) 34 Gold

Coating Thickness on Fe-Ni-Co Glass Sealing Alloy 48 on Nickel 48

High Purity 32 Microprobe Standards (Gold-Copper Wire) 33 Microprobe Standards (Gold-Silver Wire) 33 Vapor Pressure Standard 52

Guide for Submitting Requests for Development of New

SRMs 67

High-Purity Metals Gold, wire and rod 32

Platinum, wire 32

Zinc, solid 32 High Temperature Alloys 12 Hydrocarbon Blends 37 Hydrogen

in Titanium 31

Information needed When Ordering SRMs 2 When Requesting Development of New or Renewal or Out of Stock SRMs 67

Integrator Systems

Cobalt blue glass 53

Orange-red glass 53

Selective neutral glass 53

Sextant green glass 53

Signal yellow glass 53

Introduction to Catalog 1 IronCast 14-17

Ingot 6-9 ;1

Metallo-organic Compound 35 Nodular 14-17

69
Page

Ore 38

White 14-17

Isotopic Reference Standards

Boric Acid 44

Boric Acid (95% Boron-10) 44 Chromium Nitrate 44 Copper Metal 44

Lead Metal, equal atom, (206/208) 44

Lead Metal, Natural 44 Lead Metal, Radiogenic, 92% lead-206 44 Magnesium Metal 44 Rubidium Chloride 44

Silver Nitrate 44 Sodium Bromide 44 Sodium Chloride 44

Lead

Alloys 18;26

Freezing Point 51 Isotopic Reference Standards 44

Metallo-organic Compound 35

Light Sensitive Standards

Light Sensitive Papers 62

Light Sensitive Plastic Chips 53

Limestone

Argillaceous 40

Dolomitic 40

Liquids, Analyzed

Sulfur in residual fuel oil 3g Lithium

Metallo-organic Compound 35 0res 38 Low Alloy Steels 4.9

Magnesium

Alloy 20

Magnesia, Light (MgO) (Rubber Compounding) 59

Metal (Isotopic Reference Standard) 44

Metallo-organic Compound 35

Refractory (Burned Magnesite) 40

Magnetic Tape - Secondary Standard Magnetic Tape - computer amplitude reference go

Manganese

Metallo-organic Compound 35 Ore 38

Maraging Steels 1 2 Mercury (Metallo-organic Compound) 35

Metallo-organic Compounds 35

Micro-Analysis Standards

Acetanilide 34

Anisic Acid 34

Benzoic Acid . . . 34

Cystine 34

Nicotinic Acid 34 Triphenylphosphate 34 Microcopy Resolution Test Charts 63 Microprobe Standards Gold-Copper 33

Gold-Silver 33 Tungsten-20% Molybdenum 33 Microstandard Ion-Exchange Beads 36

Minerals Clays 40

Feldspars 40

Page Limestones 40

Ores 38

Molecular Weight Distribution Polystyrene, Narrow Molecular Weight Distribution . . 50

Polystyrene, Broad Molecular Weight Distribution ... 50

Molybdenum (Microprobe) 33 Mossbauer Standard 53

(see also Radioactive Standards)

Neutron Density Monitor Wire (Co in Al) 44 New Standard Reference Materials (Policy for Development) 2

Nickel Alloys 20;26

Coating Thickness on Brass 47 on Steel 47

Metallo-organic Compound 35 Oxides 20

Nitrogen in Cast Iron 30

Ingot Iron 30

Steel 30

Titanium 31 Zirconium 31 Nuclear Materials Neutron Density Monitor Wire 44

Plutonium Sulfate Hydrate 43 Plutonium Sulfate Tetrahydrate 43 Uranium Oxide (L^Og),

U-235 Depleted 43

U-235 Enriched 43

Ordering Procedure, for Purchasing SRMs 2 Ores 38

Organic Compounds

Labeled

Ethane-d 6 45

Propane-l,l,l-d3 45

Rare

1.2-o-Isopropylidene-'y-L-idofuranose 4^

2.3-o-Isopropylidenc-'y-D-threo-pentulose (xylulose) 45

L-Inositol 4g

Quebrachitol 4^

Reference 45

(see also hydrocarbon blends) Oxides Magnesium (Rubber Compounding) 59

Nickel 20 Oxygen in Ingot Iron 3 j Nitrogen 3^

Steel 31 Titanium 3^ Zirconium

Paint Pigment Color and Tinting Strength Standards .... ^

Paper

Internal Tearing Resistance Standard ^4

Light Sensitive ^2 pD Standards Disodium hydrogen phosphate 45

Potassium dihydrogen phosphate 45 Sodium bicarbonate 45 Sodium carbonate 45

70
Page

pH Standards Acid potassium phthalate 45 Borax 45

Disodium hydrogen phosphate 45

Potassium dihydrogen phosphate 45

Potassium hydrogen tartrate 45

Potassium tetroxalate 45 Sodium bicarbonate 45 Sodium carbonate 45

Phosphors

Barium silicate 53

Calcium halophosphate 53 Calcium phosphate 53 Calcium silicate 53 Calcium tungstate 53 Magnesium arsenate 53 Magnesium tungstate 53

Metallo-organic Compound 53 Zinc-Cadmium sulfide (Ag Activator) 53 Zinc-Cadmium sulfide (Cu Activator) 53

Zinc phosphate 53

Zinc silicate 53 Phosphorus

Ferro (Steelmaking Alloy) 16

Metallo-organic Compound 35

Physical Properties, SRMs Certified for 46-58

Platinum Doped, wire 32

High-Purity, wire 32 Plutonium

Sulfate Hydrate 43

Sulfate Tetrahydrate 43

Policy (on Development of SRMs) 67

Polystyrene, Molecular Weight Broad Distribution 50 Narrow Distribution 50

Potassium Acid Phthalate (pH Standard) 45 Dichromate (Oxidimetric Value) 34 Dihydrogen Phosphate (pD and pH Standards) 45 Hydrogen Tartrate (pH Standard) 45

Metallo-organic Compound 35

Tetroxalate (pH Standard) 45

Preface to 1970 Catalog (Changes in Arrangements) II Price List (Supplement to Catalog) 2 Procurement Procedures (Ordering SRMs) 2 Publications of Interest to SRM Users 79

Radioactivity Standards

Alpha, Point Source Plutonium-238 55 Beta-Ray and Gamma-Ray, Gas

Krypton-85 7 55 Krypton-85 OL 56

Carbon-14, Contemporary for Carbon-14 Dating Laboratories 56

Beta-Ray, Gamma-Ray, and Electron-Capture, Solution Carbon-14 (Benzoic acid in toluene) 7 56 Carbon-14 (n-hexadecane) 7 56

Carbon-14, Water 56

Cerium-Praseodymium-144 7 , 56

Chlorine-36 7 56

Cobalt-57 a 56

Hydrogen-3 (tritiated toluene) 7 56 Hydrogen-3 (water) 7 56

Page

Iron 55 56

Nickel-63 7 56 Promethium-147 7 56 Sodium-22 7+ 56 Sodium-22 (X 56 Tin-113-Indium-113m G! 56 Gamma-Ray, Point Source Cadmium-109 57 Cerium-139 57 Cesium-137 57

Cobalt-60 57

Manganese-54 57 Mercury-203 57 Sodium-22 57 Thorium-228 57

Yttrium-88 57 Radium, Solution 57 Radium Gamma-Ray, Solution 58

Refractive Index

2,2,4-trimethylpentane 54 Renewal and Discontinued SRMs (Policy) 2 Rubber and Rubber Compounding Standards

Acrylonitrile butadiene 59

Benzothiazyl disulfide 59

Butyl Rubber 59

Calcium carbonate 59 Calcium silicate 59 Channel black 59 Conducting black 59 Gas furnace black 59

Light magnesia 59 Mercaptobenzothiazole 59

Natural Rubber 59

N-tertiary-Butyl-2-benzolesulfenamide 59

Oil furnace black 59 Phenyl-beta-naphthylamine 59

Stearic acid 59

Styrene-butadiene, type 1500 Rubber 59 Rubidium

Chloride (Isotopic Reference Standard) 44

Selenium

Metal 20 Shipment of SRMs

Domestic 3 Foreign 3 Silicon Ferro (Steelmaking Alloy) 16 Metal 16

Metallo-organic Compound 35

Refractories (SiO 2

) 40

SilverAlloys (Microprobe) 33

Metallo-organic Compound 35

Nitrate

(Isotopic Reference Standard 44

Sizing Standards

Calibrated Glass Spheres 60

Turbidimetric and Fineness (Portland Cement) 60 Sodium

Bicarbonate (pD and pH Standard) 45 Bromide (Isotopic Reference Standard) 44

Carbonate (pD and pH Standard) 45

Chloride (Isotopic Reference Standard) 44

Di, Hydrogen Phosphate (pD and pH Standard) 45

71
Page

Metallo-organic Compound 35

0xalate(0xidimetric Value) 34

Tetraborate (Borax) (pH Standard) 45

Solder Chip Form 18

Solid Form 26

Stainless Steels 10

Steels Carbon 4 A.O.H. 0.2C 4

A. O.H. 0.6C 6

B. O.H. 0.1C 4 B.O.H. 0.2C 4

B.O.H. 0.4C 4 B.O.H. 0.5C, 0.03Sn 4

B.O.H. 0.6C 4 B.O.H. 0.8C 4

B.O.H. 1.1C 4

Basic Electric 4 Bessemer 4

Electric Furnace 4 Medium-carbon 4

Gases in High Alloy and Specialty

Crl5-Ni7-Mo2-All 4

Crl6-Ni4-Cu3 4

Maraging 12 M26-Crl5 (A286) 4 Ni36 4 Vacuum Melted 14 Valve (Cr22-Ni4-Mn9) 4 Low Alloy A.O.H. 0.4C 6

A. O.H. 0.6C 6

B.O.H. 0.4C 6 B.O.H. 0.6C 6

Basic Electric

g Cr-Mo (SAE X4130) 6 Cr-Mo (SAE X4140) 6 Cr-Mo (SAE X4150)(boron only) 6 Cr2-Mol 4 Cr-Mo-Al (Nitralloy G) 4 Chromium-Nickel g Cr-Ni-Mo (AISI 8640) 4 Chromium Vanadium g Cr-V (SAE 6150) 4 Cr-W0.9C 6 A (modified TS46B1 2) g B (modified TS86B45) 8 C (modified TS94B 17) 8 D (modified 14 B5 2) g G (modified C1010) 8 H (modified TS4720) 8 Manganese (SAE Tl 340) 4 Medium Manganese g

Nickel 6

Ni-Cr (SAE 3140) 4 Ni-Mo (SAE 4620) 4 Ni-Mo (SAE 4820) 4 Selenium Steel (0.3% Se) 8

Sulfur

Higli (Carbon only) 4

Stainless AMS 5360a, AISI 316 12 CR13 (SAE 420) 4

Page

Cr9-Mo 0.3 (modified AISI 403) 10 CR13-Mo 0.9 (modified AISI 410) 10 Crl3-Mo0.3-S0.3 4 Cr3-Ni25 10

Cr5.5-Ni6.5 10 Crl6-Ni2 (SAE 431) 4 Crl6-Nil0 10 Crl7-Ni9-Se (SAE 303SE) 4 Crl8-Ni9 (modified AISI 321) 10 Crl8-Ni9 (SAE 304) 10 Crl8-Nil0, Stainless Steel B 4 Crl8-Nil0-Ti0.4 (SAE 321) 10

Crl8.5-Ni9.5 10 Crl9-Nil0, Stainless Steel D 10 Crl9-Nil4-Mo3 (SAE 316) 10 Cr20.5-Nil0 10 Cr24-Nil3 (modified AISI 309) 4

Stainless Steel (AISI 431) 4 Tool

Cr0.5-W0.5 4 Co8-Mo9-W2-Cr4-V2 4 Mo5-W6-Cr4-V2 4 Mo8-W2-Cr4-Vl 4 Mo High Speed (A1SI-SAE-M30) ]2

Mo High Speed (AISI-SAE-M36)

n

Special (Cr6-Mo3-W10) 12

Special (Cr8-Mo2-W3-Co3) 12

Special V/ High Speed (Cr2-W13-Col 2) ]2

Special

W High Speed (Cr2-W13-Col2) ] 2

Steel Making Alloys Calcium Molybdate ]g

Ferrochromium (liigh carbon) ](, Ferrochromium (low carbon) \(, Ferroniobium ]6 Ferrophosphorus 16

Ferrosilicon (50%) ]6

Silicon, Refined 16 Stronthium

Metallo-organic Compound 35 Sucrose (Cane Sugar) 34

Sulfur Elemental (Rubber Compounding) 59

in Residual Fuel Oils 35

Surface Flammability Standard Hardboard Sheet 53

Thermal Emittance Standards

Inconel 54

Kanthal 54

Platinum 13%-rhodium alloy 54

Tin,Chip Form 22

Freezing Point 51 Metal 27

Metallo-organic Compound 35 Ore (N.E.I. Concentrate) 38

Solid Form 27 Titanium

Alloys A14-Mn4 22

A15-Sn2.5 22 A16-V4 22 A16-V4 (B) 27 Cr2-Vc2-Mo2 (A) 27 Cr2-Fe2-Mo2 (B) 27 Cr2-Fe2-Mo2 (C) 27

72
Page

Mn8 (A) 27 Mn8(B) 27 Mn8(C) 27 Chip Form 22

Gases in 28

Solid Form 27 Tool Steels 4 ; ] 2 Tungsten, Microprobe, (W-20% Mo) 33' Turbidimetric and Fineness Standard 60

Uranium

Primary Standard (U 3 08) 34 U-235 Depleted (U 3 08) 43

U-235 Enriched (U 3 08 ) 43

Vanadium

Metallo-organic Compound 35 Vapor Pressure Standard Gold 52

Viscosity Standards, Glass

Alkali-free aluminosilicate 49

Alkaline earth alumina silicate 49

Borosilicate 49

Dense Barium Crown 620/603 49

Leaded-silica type 617/366 49

Mixed alkali lead silicate 49

Neutral (borosilicate) 49

Soda-lime silica type 523/586 49

ZincDie Casting Alloys 29

Freezing Point 50

High Purity 32

Intermediate Purity 22

Metallo-organic Compound 35 Oxide (Rubber Compounding) 59

Spelter Modified 29 Zirconium

Metal 29

Zircaloy-2 22

73
INDEX BY SRM NUMBER

SRM No. Category No. Page 1 SRM No. Category No. | Page SRM No. Category No. Page

lb 3.56.1. 40 99a 3.56.1. 40 217b-8S 4.2. 49

3b 3.3. 14 100b 3.1. 4 2l7b-25 4.2. 49

'J J.J. 1 A1 4 1 A1 f 1U1 

7. 1 1 J. 1. 1. 6 7Z 1 7K_ ^ A 1 /D-jU

A 1 4. Z. 49

CTjL J.J. 1 4J 4 1 A7 <i lUja 7. C£ 7 40 jUU 7AA ^ A 1 j.4. J. 62

°g J.J. 1 d \ C\A 1 U4 j.oO.Z. 40 701 JU1 J.4. J. 02

7g 3.3. 14 i1 U j 7 1 J. 1. 4 302 5.4.3. 62

8i 3.1. 4 106b 3.1. 4 303 5.4.3. 62 1 Arr lUg ^ 1 J. 1. 4 1 A7K 1 U / D 7 7 J.J. 14 JUH 704 j.4. J. £7oZ

11V. 1 1 n J. 1 . A i 1 1 K 1 1 ID 7 1 J. 1. 4

7a<, j.4. J. A7OZ 1 7v» l zn 7. 1 J. 1. H- 1 1 7 1 IZ 7 c/: 7

J. JU. J. 42 JUO 70£ J.4. J. £7OZ

13g 3.1. 4 1 1 7 7 S.A j. j4. 38 307 5.4.3. 62

14e 3.1. 4 114L 5.3.2. 60 308 5.4.3. 62 7 1 J. 1 

115a 3.3. 1 

7 AQCA 1 0.4.0. 62

IDC 7. 1 J. 1. 4 121c 3.1. 4 7 1 A J 1 U Z A 1 0.4.0. 02 1 7 1 / J.H- 1 

34 122e 3.3. 14 7 11 J 1 

C /I "2 0.4.0. OZ

19g 3.1. 4 1 24

a 5.0.1. 1 o 312 5.4.3. 62

25c 3.54. 38 126b 3.1. 4 313 5.4.3. 62

27e 3.54. 38 1 0 OK 1 2 / D 1 (.

A 0.0.4. 1 o71/1 J 14 0.4.0. 02

28a 3.54. 38 1 o 1 b O. 1. 4 7 1^ J 1 J

C /I ^ 0.4.0. 02

30f 3. 1. 4 132a 3.1. 4 31b

CA 1 5.4.J. 02

32e 3.1. 4 o. 1 

4 317 5.4.3. 62 33d 3.1. 4 134a 3.1. 4 318 5.4.3. 62 36b 3. 1. 4 1 7£ K 1 JO D

7/11 3.4 1. 34 319

CA 1 5.4.3.

A 7 OZ

37e 3.6.2. 1 8 1 7Q 1 JO 7 ZA j. j4. 38

"5 or* 320 5.4.3. A7oZ

39i 4.22.1. 51 1 7Qo i jya 7 1 j. 1 

4 321 5.4.3. A7OZ 40h 3.41. 34 1 4UD 7 A 7 J.4Z. 34 322 5.4.3. 62 41a 3.41. 34 141b 3.42. 34 323 5.4.3. 62 t _ 1 51 1/1') 1 4Z 7 4 7 J.4Z. 34 324 5.4.3. 02

ddp 51 1 A 7K 1 Al J.4Z. 34 325 5.4.3. 02

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70a 3.56.1. 40 173a 3.6.13. 22 345 3.1. 4 7 1 / 1 7 /I 1 6 174 3.6.13. 22 j40 7AA 7 1 J. 1.

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88a 3.56. 1.

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89 3.56.4. 42 187a 3.66.1. 45 370d 5. 1.2. 59

90 0 .H. 16 188 3.66.1. 45 3711

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91 3.56.4. 42 189 3.66. 1. 45 372g

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92 3.56.4. 42 191 3.66. 1. 45 373e 5.1.2. 59

93 3.56.4. 42 192 3.66.1. 45 375f 5.1.2. 59

94

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49

378a 5.1.2. I 59

74
SRM No. Category No.

j Page SRM No. Category No. Page l>KJM INO. Category No.

| Page

379 5.1.2. 59 628 3.7. 13.2. 2y

\ 837 3.2.4. 1 2 380 5.1.2. 59 629 3.7. 13.2. 2y D837 3.2.4. ] 2 381 5.1.2. 59 630 3.7. 13.2. 2y 838 3.2.4. 1 2 382a 5. 1.2. J 7 631 3.7.13.2. 29 UOjO % ~> 4 12 383 5.1.2. 59 641 3.7.11. 27 839 3.2.4. 12 384 c 1 T

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0

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4"*fi J), ^."r. 1

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2

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481 3.8.3. 33 805a 3.2. 1. 6 1016 3.55. 4U 482 3.8.3. J J> 807a T. J 1 6 1019 5.3.1. 60 592 3.53. 37 808a 3.2.1. 6 1020 4.42. 53 593 3.53. 37 809b 3.2.1. 6 1021 A A ^ 594 3.53. 37 D809b 3.2.1.

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75
SRM No. Category No. Page SRM No. Category No. Page SRM No. Category No. Page

1031 4.42. 53 1115 3.7.2. 24 1315 4.1.1. 47 1032 4.42. 53 CI 115 3.7.2. 24 1316 4.1.1. 47 1033 4.42. 53 1116 3.7.2. 24 1317 4.1.1. 47 1051b 3.44. 35 CI 1 16 3.7.2. 24 1318 4.1.1. 47 1052b 3.44. 35 1117 3.7.2. 24 1319 4.1.1. 47 1053a 3.44. 35 CI 1 17 3.7.2. 24 1320 4.1.1. 47 1055b 3.44. 35 1118 3.7.2. 24 1331 4.1.1. 47 1057b 3.44. 35 C1118 3.7.2. 24 1332 4.1.1. 47 1059b 3.44. 35 1119 3.7.2. 24 1333 4.1.1. 47 1060a 3.44. 35 C1119 3.7.2. 24 1334 4.1.1. 47 1061b 3.44. 35 1120 3.7.2. 24 1335 4.1.1. 47 1062a 3.44. 35 C1120 3.7.2. 24 1336 4.1.1. 47 1063a 3.44. 35 1121 3.7.2. 24 1337 4.1.1. 47 1064 3.44. 35 CI 121 3.7.2. 24 1338 4.1.1. 47 1065b 3.44. 35 1122 3.7.2. 24 1339 4.1.1. 47 1066a 3.44. 35 C1122 3.7.2. 24 1341 4.1.1. 47 1069b 3.44. 35 1123 3.7.2. 24 1342 4.1.1. 47

1070a 3.44. 35 C1123 3.7.2. 24 1343 4.1.1. 47 1071a 3.44. 35 1131 3.7.4. 26 1344 4.1.1. 47 1073b 3.44. 35 1138 3.4. 16 1345 4.1.1. 47 1074a 3.44. 35 1139 3.4. 16 1346 4.1.1. 47 1075a 3.44. 35 1140 3.4. 16 1351 4.1.1. 48

1076 3.44. 35 1141 3.4. 16 1352 4.1.1. 48 1077a 3.44. 35 1142 3.4. 16 1353 4.1.1. 48 1078a 3.44. 35 1143 3.4. 16 1361 4.1.1. 48 1079a 3.44. 35 1144 3.4. 16 1362 4.1.1. 48

1080 3.44. 35 1147 3.4. 16 1363 4.1.1. 48 1090 3.2.7. 14 1148 3.4. 16 1364 4.1.1. 48

1091 3.2.7. 14 1149 3.4. 16 1365 4.1.1. 48 1093 3.2.7. 14 1152 3.2.3. 10 1366 4.1.1. 48 1094 3.2.7. 14 1154 3.2.3. 10 1367 4.1.1. 48 C1100 3.7.2. 24 1155 3.2.3. 10 1371 4.1.2. 48

1101 3.7.2. 24 1156 3.2.5. 12 1372 4.1.2. 48 CHOI 3.7.2. 24 1159 3.7.5. 26 1373 4.1.2. 48 1102 3.7.2. 24 1160 3.7.5. 26 1374 4.1.2. 48 C1102 3.7.2. 24 1163 3.2.2. 8 1375 4.1.2. 48

1103 3.7.2. 24 1165 3 7

"> 8 1376 4.1.2. 48 C1103 3.7.2. 24 1166 3.2.2. 8 1377 4.1.2. 48

1104 3.7.2. 24 1167 3.2.2. 8 1378 4.1.2. 48

CI 104 3.7.2. 24 1168 3.2.2. 8 1381 4.1.2. 48

1105 3.7.2. 24 1170 3 ? ? 8 1382 4.1.2. 48

CI 105 3.7.2. 24 1174a 3.4. 16 1383 4.1.2. 48

1106 3.7.2. 24 1175a 3.4. 16 1384 4.1.2. 48 C1106 3.7.2. 24 1185 3.2.3. 10 1385 4.1.2. 48

1107 3.7.2. 24 1194 3.2.6. 10 1386 4.1.2. 48 C1107 3.7.2. 24 1210 3.7.14. 29 1398 4.1.2. 48

1108 3.7.2. 24 1301 4.1.1. 47 1399 4.1.2. 48 C1108 3.7.2. 24 1302 4.1.1. 47 1402 4.43. 54 1109 3.7.2. 24 1303 4.1.1. 47 1403 4.43. 54 CI 109 3.7.2. 24 1304 4.1.1. 47 1404 4.43. 54 1110 3.7.2. 24 1305 4.1.1. 47 1405 4.43. 54 C1110 3.7.2. 24 1306 4.1.1. 47 1406 4.43. 54

1111 3.7.2. 24 1307 4.1.1. 47 1407 4.43. 54 Cllll 3.7.2. 24 1308 4.1.1. 47 1408 4.43. 54

1112 3.7.2. 24 1309 4.1.1. 47 1409 4.43. 54 CI 1 12 3.7.2. 24 1310 4.1.1. 47 1420 4.43. 54

1113 3.7.2. 24 1311 4.1.1. 47 1421 4.43. 54 CI 113 3.7.2. 24 1312 4.1.1. 47 1422 4.43. 54 1114 3.7.2. 24 1313 4.1.1. 47 1423 4.43. 54

Cll 14 3.7.2. 24 1314 4.1.1. 47 1424 4.43. 54

76
SRM No. Category No. Page SRM No. Category No. Page

1425 4.43. 54 4929-B 4.51.3. 56 1427 4.43. 54 4935-C 4.51.2. 55 1428 4.43. 54 4940-B 4.51.3. 56 1440 4.43. 54 4941-C 4.51.3. 56

1441 4.43. 54 4943 4.51.3. 56 1442 4.43. 54 4947 4.51.3. 56 1443 4.43. 54 4948 4.51.3. 56 1444 4.43. 54 4950-B 4.51.6. 58 1445 4.43. 54 4951 4.51.6. 58

1591 3.71.1. 46 4yo2-A A C 1 £L 4.51.6. ^ Q JO

1592 3.71.1. 46 4953 4.51.6. 58 1593 3.71.1. 46 4955 5.51.5. 57 1594 3.71.1. 46 4956 5.51.5. 57 1601 3.51. 36 4957 5.51.5. 57 1602 3.51. 36 j.M.j. j^7/ 1603 3.51. 36 4959 5.51.5. 57 1604 3.51. 36 4960 5.51.5. 57 1605 3.51. 36 4961 5.51.5. 57 1606 3.51. 36 4962 5.51.5. 57 1607 3.51. 36 4VD D j.jI.j. J / 1608 3.51. 36 4964-B 5.51.5. 57 1609 3.51. 36 4990-B 4.51.7. 58

1621 3.52. 36 4991-C 4.51.4. 57 1622 3.52. 36 4995-C 4.51.4. 57 1651 4.22.1. 51 A C 1 A 4. J 1.4. z> 1 1652 4.22.1. 51 4997-D 4.51.4. 57 1653 4.22.1. 51 4998-E 4.51.4. 57 1800 3.45. 36 4999-D 4.51.4. 57

101-5 4.41. 53 U-005 3.61.1. 43 2106 5.4. 1. 61 u-ui u 3.61.1. 2175 3.71.2. 46 U-015 3.61.1. 43

2176 3.71.2. 46 U-020 3.61.1. 43

2186-1 3.66.2. 45 U-030 3.61.1. 43

2186-11 3.66.2. 45 U-050 3.61.1. 43

2191 3.66.2. 45 U-100 3.61.1. A 0 4 J 2192 3.66.2. 45 U-150 3.61.1. 43 3200 5.2.1. 60 U-200 3.61.1. 43

4200-B 4.51.4. 57 U-350 3.61.1. 43 4202 4.51.4. 57 U-500 3.61.1. 43 4203-A 4.51.4. 57 Tl qfri U- / 5(J 3.6 1. 1. 4 J 4203-B 4.51.4. 57 U-800 3.61.1. 43 4205 4.51.4. 57 U-850 3.61.1. 43 4206 4.51.4. 57 U-900 3.61.1. 43 4207 4.51.4. 57 U-930 3.61.1. A 1

A 7f\0 4ZU6 4.51.4. 5 / 4209 4.51.4. 57 4210 4.51.4. 57 4222 4.51.3. 56 4223 4.51.3. 56

A T)A 4224 4.5 1 .3. 56 4225 4.51.3. 56 4226 4.51.3. 56 4235 4.51.2. 55 4906 4.51.1. 55 4921-t 4.5 1.3. 56 4922-E 4.51.3. 56 4924 4.51.3. 56 4925 4.51.3. 56 4926 4.51.3. 56 4927 4.51.3. 56

77

TECHNICAL CONTACT POINT

FOR STANDARD REFERENCE MATERIALS (SRM's) FROM NBS

Please complete and return to:

Office of Standard Reference Materials

National Bureau of Standards

Washington, D, C. 20234

Please add my name to your technical mailing list to receive information concerning new

and renewed Standard Reference Materials (SRM's), updated values, revised instructions for use, and technical publications pertaining to SRM's.

Name: Title:

Department or Division:

Company or Organization.

Street or P.O. Box:

City: State:

Country. Zip Code:

u5 AREAS OF INTEREST AND/OR USE

o (Check pertinent boxes)

Isotopic Clinical

Metals, Ferrous Metals , Non-ferrous

Polymers, Plastics Vi scosi ty

Color Coating Thickness

Permittivity Structure: eg., Mossbauer

Nuclear and Radioactivity DGases, including Air-pollution

Rubber and Rubber Compounding Organics and Metal lo-organi cs High Purity Metals and Compounds Copying and Photographic Processes

Ores, Cements, Ceramics, Pigment, Phosphors

Primary Chemical Standards, including pH, pD, Microchemical

Thermodynamic Properties, including Heat, Thermal Emittance, Calorimetry, Melting and

Freezing Point

Paper, including Light Sensitivity and Tearing Tests

Particle Size, including Turbidimetric and Fineness

Others (specify):

Please send me a Catalog

U.S. GOVERNMENT PRINTING OFFICE : 1970 431-98S/10

(Use additional forms for additional names)


I

J
U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS October 1, 1965

QUARTERLY INSERT SHEETS FOR NBS MISCELLANEOUS

PUBLICATION 260- STANDARD REFERENCE MATERIALS

Catalog and Price List of Standard Materials Issued by the National Bureau of Standards

New and renewal Standard Reference Materials are continuously being prepared while the supply

of others is gradually depleted. This Quarterly Addendum is issued to bring the Catalog and Price

List up-to-date as of October 1, 1965. NEW STANDARD REFERENCE MATERIALS

4.6.2—Rubber Compounding Materials (p. 30)

Sample No. Kind Weight Price

384 N-tertiary-Butyl-2-benzothiazolesulfenamide 800 g $5.00

4.18—Glass Spheres for Sieve Calibration (p. 35)

Sample No. Kind Weight Price

1003 5-30 Micron Glass Spheres 40-45 g $15.00

4.5.5—Point-Source Gamma-Ray Standards (p. 29)

Sample No. Kind Weight Price

4201 Niobium-94

1 X 104 dps (>65)

Point source $55.00

4.21—Coating Thickness (p. 35)

Sample No. Nominal thickness

(in inches) Coating Substrate Price

1302 0.00025 Nonmagnetic

(copper + chromium)

Steel $7.50

1
Coating Thickness (Cont'd)

Nominal thickness

(in inches)

.00050

.00075

.0010 .0015 .0020

.0025

.0032 .0055

.008

.010

.015 .020

.025

.03

.04 .06

.08 .00012 .00035

.00055

.00075

.0010

.0013

.0016 .0020

.0025 .00012

.00035 .00065

.0010

Coating

Nonmagnetic

(copper + chromium)

do

Substrate

Steel

do

do do

do do

do do

do do

do do

do do

do do

do do

do do

do do

do do

do do

do do

do do

do do

Nickel

do

Steeldo

do do

do do

do do

do do

_ QO - _ _ - _UO_ - - - --...do do

do do

Nickel

do

Nonmagnetic

(brass) do

do do

do do

RENEWALS OF EARLIER MATERIALS

3.16—Ceramic Materials (p. 21)

Sample No. Kind Weight Price

70a Feldspar, potash 40 g $10.00

99a Feldspar, soda 40 g 10.00

2
4.6.2—Rubber Compounding Materials (p. 30)

Sample No. Kind Weight Price

371e Sulfur 1,400 g $4.50

4.5.3—Beta-ray, gamma-ray and electron-capture solution standards (p. 28)

Sample No. Kind Weight Price

4946-B Cerium-141 0 §> $53.00

7 X 104 dps/g(4/65)

4.5.8—Radium Gamma-Ray Solution Standards (p. 30)

Sample No. Kind vv eigui Price

4964B Radium 226 Gamma-Ray Solution Std. 5 ff $43.00

4.5.5—Point Source Gamma-Ray Standards (p. 29)

Sample No. Kind Weight Price

4991-B Sodium-22 Point source $57.00

6 X 104 y/s(1/65)

4992-C Zinc-65 Point source 50.00

5 X 104 t/s(1/65)

4998-C,D Yttrium-88 Point source 53.00

1 X 104 t/s(3/65)

4999-C Cerium-139 Point source 56.00

1 X 105 TPs

3
MATERIAL TEMPORARILY OUT OF STOCK

3.1—Steels (Chip Form) (p. 3)

Sample No. Kind

llg

12g

15f

30e

152

Basic Open Hearth Steel, 0.2% C

i T-? on gis? q 1 q r\rvi 1 1 orpn lQfifil ^XVcilcWtll dUUUL IVldlCJUj j.u\)\)

J

Basic Open Hearth Steel, 0.4% C

(Renewal available by Oct. 15, 1965)

Basic Open Hearth Steel, 0.1% C

(Renewal available by Oct. 15, 1965)

CrV (SAE 6150) Steel (Renewal planned but probably not before July, 1966) Basic Open Hearth Steel (Tin Bearing 0.4% C)

(Renewal available by Oct. 15, 1965)

4.6.1—Standard Rubbers (p. 30)

Sample No. Kind

385b Natural Rubber

3.4—White Cast Iron (Solid Form) (p. 10)

Sample No. Kind

1176

1178

1181

White Cast Iron—Piston Ring

(Will be replaced by 1174 and 1175—available about Nov., 1965)

White Cast Iron—Die

(Will be replaced by 1174 and 1175—available about Nov., 1965)

Whitn Cast Iron—Special 1 (Will be replaced by 1174 and 1175—available about Nov., 1965)

MATERIAL OUT OF STOCK—DISCONTINUED

3.19—Microchemical Standards (p. 24)

Sample No. Kind

145 Iodobenzoic Acid

4
3.1—Steel (Chip Form) (p. 3)

Sample No. Kind

159 Chromium-Molybdenum-Silver Steel

3.10—Tin Metal (Solid Form) (p. 16)

Sample No. Kind

433

434

833

Tin C

Tin D

Tin C

3.2—Steels (Solid Form) (p. 9)

Sample No. Kind

1042 Bessemer, Rimming

3.2—Steels (Solid Form) (p. 8)

Sample No. Kind

1153 Stainless Steel

PRICE CHANGES

3.19—Microchemical Standards (p. 24)

Sample No. Kind New Price

143b Cystine $11.50

5
3.1—Steels (Chip Form), (p. 3)

Sample No. Kind New Price

339

346

Stainless Steel, Selenium

Valve Steel $20.0020.00

4.6.2—Rubber Compounding Materials (p. 30)

Sample No. Kind New Price

373e Benzothiazyl Disulfide $ 9.00

4.15—Light-Sensitive Papers (p. 34)

Sample No. Kind New Price

701a Booklet of Standard Faded Paper $60.00

4.17—Microscopy Resolution Test Chart (p. 34)

Sample No. Kind New Price

1010 Resolution Chart for Testing the Resolving Power of Microscopying

Cameras (add $2.00 per order for handling).

$ .60

3.7—Copper-Base Alloys (Solid Form) (p. 14)

Sample No. Kind New Price

CllOO

1101 CllOl

1102 C1102

1103 C1103

L104

Cartridge Brass A

Cartridge Brass B

Cartridge Brass B

Cartridge Brass C

Cartridge Brass C

Free-Cutting Brass A

Free-Cutting Brass A

Free-Cutting Brass B

$35.00

35.00

35.00

35.00

35.00

35.00

35.00

35.00

6
3.7—Copper-Base Alloys (Solid Form) (Cont'd)

Sample No. Kind New Price

C1104 Free-Cutting Brass B 35.00

1105 Free-Cutting Brass C 35.00

C1105 Free-Cutting Brass C 35.00

1106 Naval Brass A 35.00

C1106 Naval Brass A 35.00

1107 Naval Brass B 35.00

C1107 Naval Brass B 35.00

1108 Naval Brass C 35.00

C1108 Naval Brass C 35.00

1109 Red Brass A 35.00

CI 109 Red Brass A 35.00

1110 Red Brass B 35.00

C1110 Red Brass B 35.00

1111 Red Brass C 35.00

Cllll Red Brass C 35.00

1112 Gilding Metal A 35.00

C1112 Gilding Metal A 35.00

1113 Gilding Metal B 35.00

C1113 Gilding Metal B 35.00

1114 Gilding Metal C 35.00

C1114 Gilding Metal C 35.00

1115 Commercial Bronze A 35.00

C1115 Commercial Bronze A 35.00

1116 Commercial Bronze B 35.00

C1116 Commercial Bronze B 35.00

1117 Commercial Bronze C 35.00

C1117 Commercial Bronze C 35.00

1118 ^ no C1118 Aluminum Brass A 35.00

1119 Aluminum Brass B 35.00

C1119 Aluminum Brass B 35.00

1120 Aluminum Brass C 35.00

C1120 Aluminum Brass C 35.00

4.5.8—Radium Gamma-Ray Solution Standards (p. 30)

Sample No. Kind New Price

4955 Radium Gamma-Ray Solution Standard $34.00

4956 Radium Gamma-Ray Solution Standard 34.00

4957 Radium Gamma-Ray Solution Standard 34.00

7
4.5.8—Radium Gamma-Ray Solution Standards (Cont'd)

Sample No. Kind New Price

4958 Radium Gamma-Ray Solution Standard 34.00

4959 Radium Gamma-Ray Solution Standard 34.00

4960 Radium Gamma-Ray Solution Standard 34.00

4961 Radium Gamma-Ray Solution Standard 34.00

4962 Radium Gamma-Ray Solution Standard 34.00

4963 Radium Gamma-Ray Solution Standard 34.00

4.8.1—CGS Units (p. 31)

Sample No. Kind New Price

Oil L Viscometer Calibrating Liquid L

Oil M Viscometer Calibrating Liquid M 20.00

Oil N Viscometer Calibrating Liquid N 25.00

Oil OB Viscometer Calibrating Liquid OB 37.50

Oil SB Viscometer Calibrating Liquid SB 8.00

Oil SF Viscometer Calibrating Liquid SF 8.00

8
Other NBS Publications of Interest to SRM Users NBS Misc. Publ. 260-1, Standard Reference Materials: Preparation of NBS White Cast Iron Spectrochemical Standards, June 1964. 30 cents. NBS Misc. Publ. 260-2, Standard Reference Materials: Preparation of NBS Copper-Base Spectro- chemical Standards, October 1964. 35 cents. NBS Misc. Publ. 260-6, Standard Reference Materials: Methods for the Chemical Analysis of White Cast Iron Standards, July 1965. 45 cents. NBS Misc. Publ. 260-7, Standard Reference Materials: Methods for the Chemical Analysis of NBS

Copper-Base Spectrochemical Standards, October 1965. 60 cents. NBS Misc. Publ. 260-9, Standard Reference Material: Half Lives of Materials Used in the Preparation of Standard Reference Materials of Nineteen Radioactive Nuclides Issued by the National Bureau of Standards, November 1965. 15 cents. NBS Misc. Publ. 260-10, Standard Reference Materials: Homogeneity Characterization of NBS

Spectrometric Standards II: Cartridge Brass and Low-Alloy Steel, December 1965. 30 cents. NBS Misc. Publ. 260-11, Standard Reference Materials: Viscosity of a Standard Lead-Silica Glass, November 1966. 25 cents. NBS Misc. Publ. 260-12, Standard Reference Materials: Homogeneity Characterization of NBS

Spectrometric Standards III: White Cast Iron and Stainless Steel Powder Compact, September

1966. 20 cents. NBS Misc. Publ. 260-13. Standard Reference Materials: Mossbauer Spectroscopy Standard for Chemical Shift of Iron Compounds, July 1967. 40 cents. NBS Misc. Publ. 260-14, Standard Reference Materials: Determination of Oxygen in Ferrous

Materials SRM 1090, 1091, and 1092, 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 Colorfastness to Light, July 1967. 20 cents. NBS Spec. Publ. 260-16. Standard Reference Materials: Homogeneity Characterization of NBS

Spectrometric Standards IV: Preparation and Microprobe Characterization of W-20% Mo Alloy

Fabricated by Powder Metallurgical Methods, January 1969. 35 cents. NBS Spec. Publ. 260-17, Standard Reference Materials: Boric Acid Isotopic and Assay Standard Reference Materials, December 1969. 65 cents. NBS Spec. Publ. 260-18, Standard Reference Materials: Calibration of NBS Secondary Standard Magnetic Tape (Computer Amplitude Reference) Using the Reference Tape Amplitude Measurement "Process A," November 1969. 50 cents. NBS Monograph 54 "Analytical Standards for Trace Elements in Petroleum Products." 25 cents.

Send orders for the above, with remittance, to: Superintendent of Documents, U.S. Government

Printing Office, Washington, D.C. 20402. Remittances from foreign countries should include an additional one-fourth of the purchase price for postage.
U.S. DEPARTMENT OF COMMERCE

WASHINGTON, D.C. 20230

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