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DIN EN 10083-1
Vergtungssthle Teil 1: Allgemeine technische Lieferbedingungen Englische Fassung DIN EN 10083-1:2006-10
Normen-Download-Beuth-Presswerk Krefeld-KdNr.6963824-LfNr.3613261001-2007-05-07 16:10
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Together with DIN EN 10083-2:2006-10 and DIN EN 10083-3:2006-10, supersedes DIN EN 10083-1:1996-10 and DIN 17212:1972-08; together with DIN EN 10083-2:2006-11, supersedes DIN EN 10083-2:1996-10; together with DIN EN 10083-3.2006-10, supersedes DIN EN 10083-3:1996-02
Document comprises 27 pages
No part of this standard may be reproduced without prior permission of DIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, has the exclusive right of sale for German Standards (DIN-Normen). English price group 13 www.din.de www.beuth.de
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Steels for quenching and tempering Part 1: General technical delivery conditions English version of DIN EN 10083-1:2006-10
Supersedes: see below
The responsible German body involved in its preparation was the Normenausschuss Eisen und Stahl (Steel and Iron Standards Committee), Technical Committee 05/1. Amendments
This standard differs from DIN EN 10083-1:1996-10, DIN EN 10083-2:1996-10, DIN EN 10083-3:1996-02 and DIN 17212:1972-08 as follows:
The three parts are now divided up in a more appropriate manner: Part 1: General technical delivery conditions Part 2: Technical delivery conditions for non-alloy steels Part 3: Technical delivery conditions for alloy steels
DIN 1661: 1924-09, 1929-06 DIN 1662: 1928-07, 1930-06 DIN 1662 Supplement 5, Supplement 6, Supplement 8 to Supplement 11: 1932-05 DIN 1663: 1936-05, 1939x-12 DIN 1663 Supplement 5, Supplement 7 to Supplement 9: 1937x-02 DIN 1665: 1941-05 DIN 1667: 1943-11 DIN 17200 Supplement: 1952-05 DIN 17200: 1951-12, 1969-12, 1984-11, 1987-03 DIN 17212: 1972-08 DIN EN 10083-1: 1991-10, 1996-10 DIN EN 10083-2: 1991-10, 1996-10 DIN EN 10083-3: 1996-02
c) Flame and induction hardening steels are now included in the scope of this standards series.
b) This restructuring was achieved by including the following general information which was previously given in all three parts in the first part only: figures showing the location of test pieces and samples; and the Annexes Ruling sections for mechanical properties, Other relevant standards, Dimensional standards applicable to products complying with this European Standard, and Non-metallic inclusion content. However, the diagrams and information in Annexes specific to unalloyed or to alloyed quality steels have been left in the relevant part, namely Part 2 or Part 3, respectively.
a) This series of standards (DIN EN 10083-1 to -3) has been thematically restructured. Previously, the three parts were divided up as follows: Part 1: Technical delivery conditions for special steels Part 2: Technical delivery conditions for unalloyed quality steels Part 3: Technical delivery conditions for boron steels
This standard has been prepared by ECISS/TC 23 Steels for heat treatment, alloy steels and free-cutting steels Qualities and dimensions (Secretariat: Germany).
Aciers pour trempe et revenu - Partie 1: Conditions techniques gnrales de livraison
This European Standard was approved by CEN on 7 July 2006.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Vergtungssthle - Teil 1: Allgemeine technische Lieferbedingungen
Foreword..............................................................................................................................................................3 1 2 3 4 4.1 4.2 5 5.1 5.2 6 6.1 6.2 6.3 6.4 7 7.1 7.2 7.3 7.4 7.5 7.6 7.7 8 8.1 8.2 8.3 9 9.1 9.2 9.3 9.4 Normative references ............................................................................................................................5 Terms and definitions ...........................................................................................................................6
Scope ......................................................................................................................................................4
Information to be supplied by the purchaser .....................................................................................7 Mandatory information ..........................................................................................................................7 Options ...................................................................................................................................................7 Manufacturing process .........................................................................................................................8 General....................................................................................................................................................8 De-oxidation ...........................................................................................................................................8 Heat treatment and surface condition at delivery ..............................................................................8 Cast separation ......................................................................................................................................8 Requirements .........................................................................................................................................9 Chemical composition, hardenability and mechanical properties ...................................................9 Machinability ..........................................................................................................................................9 Shearability of semi-finished products and bars ...............................................................................9 Structure .................................................................................................................................................9 Internal soundness ..............................................................................................................................10 Surface quality .....................................................................................................................................10 Dimensions, tolerances on dimensions and shape .........................................................................10 Inspection .............................................................................................................................................10 Testing procedures and types of documents...................................................................................10 Frequency of testing ...........................................................................................................................11 Tests to be carried out for specific inspection.................................................................................11 Preparation of samples and test pieces ............................................................................................12 Selection and preparation of samples for chemical analysis .........................................................12 Location and orientation of samples and test pieces for mechanical tests..................................12 Location and preparation of samples for hardness and hardenability tests ................................12 Identification of samples and test pieces .........................................................................................12 Test methods........................................................................................................................................13 Chemical analysis................................................................................................................................13 Mechanical tests ..................................................................................................................................13 Hardness and hardenability tests ......................................................................................................13 Retests ..................................................................................................................................................14 Marking, labelling, packaging.............................................................................................................14
10 10.1 10.2 10.3 10.4 11
Classification and designation.............................................................................................................6 Classification..........................................................................................................................................6 Designation ............................................................................................................................................6
This document (EN 10083-1:2006) has been prepared by Technical Committee ECISS/TC 23 Steels for heat treatment, alloy steels and free-cutting steels - Qualities and dimensions, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2007, and conflicting national standards shall be withdrawn at the latest by February 2007. Together with Part 2 and Part 3 of this standard, this Part 1 is a revision of the following European Standards:
EN 10083-1:1991 + A1:1996, Quenched and tempered steels Part 1: Technical delivery conditions for special steels EN 10083-2:1991 + A1:1996, Quenched and tempered steels Part 2: Technical delivery conditions for unalloyed quality steels EN 10083-3:1995, Quenched and tempered steels Part 3: Technical delivery conditions for boron steels
EURONORM 86:1970, Steels for flame and induction hardening Quality specifications The specific requirements for steels for quenching and tempering are given in the following parts:
Part 3: Technical delivery conditions for alloy steels
Part 2: Technical delivery conditions for non alloy steels
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
This part of EN 10083 specifies the general technical delivery requirements for
semi-finished products, hot formed, e.g. blooms, billets, slabs (see NOTES 2 and 3), bars (see NOTE 2), rod, wide flats, hot-rolled strip and sheet/plate, forgings (see NOTE 2)
NOTE 2 Hammer forged semi-finished products (blooms, billets, slabs etc.), seamless rolled rings and hammer forged bars are in the following covered under semi-finished products or bars and not under the term "forgings". NOTE 3
NOTE 4 In accordance with EN 10020, the steels covered by EN 10083-2:2006 are quality and special steels, the steels covered by EN 10083-3:2006 are special steels. The differences between quality and special steels are characterized by the following requirements, which are valid for special steels only: the minimum impact values in the quenched and tempered condition (for non alloy special steels in the case of mean percentages by mass of carbon < 0,50 % only); limiting hardenability values in the Jominy test (for non alloy steels in the case of percentages by mass of carbon > 0,30 % only); limited oxide inclusion content;
lower maximum contents for phosphorus and sulphur.
Special agreements should be made when ordering un-worked continuously cast semi-finished products.
EN 10002-1, Metallic materials Tensile testing Part 1: Method of test at ambient temperature EN 10020:2000, Definition and classification of grades of steel
EN 10021, General technical delivery requirements for steel and iron products EN 10027-1, Designation systems for steels Part 1: Steel names
EN 10027-2, Designation systems for steels Part 2: Numerical system
EN 10045-1, Metallic materials Charpy impact test Part 1: Test method EN 10052:1993, Vocabulary of heat treatment terms for ferrous products EN 10079:1992, Definition of steel products
EN 10083-2:2006, Steels for quenching and tempering Part 2: Technical delivery conditions for non alloy steels
EN 10160, Ultrasonic testing of steel flat product of thickness equal or greater than 6 mm (reflection method) EN 10163-2, Delivery requirements for surface condition of hot-rolled steel plates, wide flats and sections Part 2: Plates and wide flats
EN 10204, Metallic products Types of inspection documents EN 10221, Surface quality classes for hot-rolled bars and rods Technical delivery conditions CR 10261, ECISS Information Circular 11 Iron and steel Review of available methods of chemical analysis EN 10308, Non destructive testing Ultrasonic testing of steel bars EN ISO 377:1997, Steel and steel products Location and preparation of samples and test pieces for mechanical testing (ISO 377:1997) EN ISO 642, Steel Hardenability test by end quenching (Jominy test) (ISO 642:1999) EN ISO 643, Steels Micrographic determination of the apparent grain size (ISO 643:2003)
EN ISO 3887, Steels Determination of depth of decarburization (ISO 3887:2003) EN ISO 6506-1, Metallic materials Brinell hardness test Part 1: Test method (ISO 6506-1:2005) EN ISO 6508-1:2005, Metallic materials Rockwell hardness test Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-1:2005) EN ISO 14284:2002, Steel and iron Sampling and preparation of samples for the determination of chemical composition (ISO 14284:1996)
EN 10083-3:2006, Steels for quenching and tempering Part 3: Technical delivery conditions for alloy steels
3.1 flame and induction hardening steels flame and induction hardening steels are characterized by the fact that, when in the usual quenched and tempered condition, they are capable of being surface hardened by local heating and quenching without any appreciable impairment of the strength and toughness properties of the core 3.2 quenched and tempered steels quenched and tempered steels are engineering steels which because of their chemical composition are suitable for hardening and in the quenched and tempered condition have good toughness at a given tensile strength
3.3 ruling section section for which the specified mechanical properties apply (see Annex A). Independent of the actual shape and dimensions of the cross-section of the product the size of its ruling section is always given by a diameter. This corresponds to the diameter of an "equivalent round bar". That is, a round bar, which, at the position of its cross-section specified for taking the test pieces for the mechanical tests, will, when being cooled from austenitizing temperature, show the same cooling rate as the actual ruling section of the product concerned at its position for taking the test pieces
For the purposes of this document, the terms and definitions given in EN 10020:2000, EN 10052:1993, EN 10079:1992, EN ISO 377:1997, EN ISO 14284:2002 and the following apply.
The manufacturer shall obtain the following information from the purchaser at the time of enquiry and order: a) b) c) d) e) f) g) the quantity to be delivered;
the designation of the product form (e.g. round bar, rod, sheet or forging); the number of the dimensional standard (e.g. EN 10060);
the number of this European Standard including the number of the relevant part; steel name or steel number (see 4.2, EN 10083-2 and EN 10083-3);
the type of inspection document in accordance with EN 10204 (see 8.1).
a) any particular heat treatment condition (see 6.3.2);
b) any particular surface condition (see 6.3.3);
c) any verification of the product analysis (see 7.1.1.2 and B.6); d) any requirement to the hardenability (+H, +HH, +HL) for special steels (see 7.1.2) and if agreed the information about calculation of the hardenability (see 10.3.2); e) any verification of mechanical properties of reference test pieces in the quenched and tempered (+QT) or normalized (+N) condition (see B.1 and B.2); any fine grain requirements or verification of fine grain size (see 7.4 and B.3);
g) any requirements for the verification of non-metallic inclusion content of special steels (see 7.4 and B.4); h) any requirement for internal soundness (see 7.5 and B.5); any requirement relating to surface quality (see 7.6.3);
any requirement regarding the permissible depth of decarburization (see 7.6.4);
k) suitability of bars and rod for bright drawing (see 7.6.5); any requirement relating to removal of surface defects (see 7.6.6);
A number of options are specified in this European Standard and listed below. If the purchaser does not indicate his wish to implement any of these options, the supplier shall act in accordance with the basic specification of this European Standard (see 5.1):
the dimensions and tolerances on dimensions and shape and, if applicable, letters denoting relevant special tolerances;
7.1.1.1 The chemical composition determined by cast analysis shall comply with the values in Table 3 of EN 10083-2:2006 or EN 10083-3:2006 respectively.
7.1.1.2 Permissible deviations between the limiting values for cast analysis and the values for product analysis are given in Tables 4 of EN 10083-2:2006 and EN 10083-3:2006 respectively.
The product analysis shall be carried out when specified at the time of the order (see B.6).
7.6.1 6.3.3
All products shall have a smooth finish appropriate to the manufacturing processes applied, see also
7.6.3 Where appropriate, requirements relating to the surface quality of the products shall be agreed on at the time of enquiry and order, if possible with reference to European Standards. Sheet/plate and wide flats shall be delivered with surface class A, subclass 1 according to EN 10163-2 unless otherwise agreed at the time of enquiry and order. Bars and rods shall be delivered with surface class A according to EN 10221 unless otherwise agreed at the time of enquiry and order.
7.6.4 Requirements relating to the permissible depth of decarburization may be agreed at the time of enquiry and order for special steels. The depth of decarburization shall be determined in accordance with the micrographic method specified in EN ISO 3887.
7.6.5 If suitability of bars and rod for bright drawing is required, this shall be agreed at the time of enquiry and order. 7.6.6 The removal of surface defects by welding shall only be permitted with the approval of the customer or his representative. If surface discontinuities are repaired, the method and maximum depth of removal shall be agreed at the time of enquiry and order.
7.6.2 Minor surface imperfections, which may occur also under normal manufacturing conditions, such as scores originating from rolled-in scale in the case of hot-rolled products, shall not be regarded as defects.
the time of enquiry and order. If the order does not contain any specification of this type, a test report shall be issued.
the confirmation that the material complies with the requirements of the order;
the results of the cast analysis for all the elements specified in Tables 3 of EN 10083-2:2006 and EN 10083-3:2006 for the steel grade concerned.
8.1.3 If, in accordance with the order agreements, an inspection certificate 3.1 or 3.2 is to be issued, the specific inspection described in 8.3, Clauses 9 and 10 shall be carried out and the results shall be confirmed in the inspection certificate. In addition, the inspection certificate shall contain the following information: a) b) c)
the manufacturer's results for the cast analysis of all elements specified in the Tables 3 of EN 10083-2:2006 and EN 10083-3:2006 for the steel grade concerned; the results of inspections and tests ordered as a result of supplementary requirements (see Annex B); the symbol letters or numbers relating the inspection certificate, test pieces and products to each other.
8.2.2 Test units
The verification of mechanical properties and hardenability shall be as specified in EN 10083-2 and EN 10083-3.
8.1.2 If, in accordance with the agreements made at the time of enquiry and order, a test report 2.2 is to be issued, it shall contain the following information:
9.2.1 9.2.1.1 Preparation of samples
The following samples shall be taken from one sample product of each test unit:
for normalized (+N) or quenched and tempered (+QT) products one sample for tensile testing;
for quenched and tempered (+QT) products one sample for one set of six impact test pieces (see 10.2.2). From bars, rods and flat products the samples shall be taken in accordance with Figures 1 to 3.
Test pieces may be non-proportional but in cases of dispute proportional test pieces having a gauge length Lo = 5,65
The requirements of EN 10002-1 as appropriate shall apply.
10.2.1 Tensile test The tensile test shall be carried out in accordance with EN 10002-1.
For the specified yield strength in the tables on mechanical properties in EN 10083-2 and EN 10083-3 the upper yield strength (ReH) shall be determined. If a yield phenomenon is not present, the 0,2 % proof strength (Rp0,2) shall be determined. 10.2.2 Impact test
The impact test shall be carried out in accordance with EN 10045-1.
If the above conditions are not satisfied then an additional set of three test pieces may be taken at the discretion of the manufacturer from the same sample and tested. To consider the test unit as conforming, after testing the second set, the following conditions shall be satisfied simultaneously:
The average value of six test pieces shall be equal to or greater than the specified value; Not more than two of six individual values may be lower than the specified value; Not more than one of the six individual values may be lower than 70 % of the specified value.
The average values of a set of three test pieces shall be equal to or greater than the specified value. One individual value may be below the specified value, provided that it is not less than 70% of that value.
tables in EN 10083-2 and EN 10083-3. The hardness values shall be determined in accordance with EN ISO 6508-1:2005, method C.
The surface hardness of steels after flame or induction hardening shall be determined in accordance with EN ISO 6508-1:2005, method C.
10.3.3 Surface hardness
A.1 Definition See 3.3. A.2 Determination of the diameter of the equivalent ruling section
A.2.1 If the test pieces are taken from products with simple cross sections and from positions with quasi two-dimensional heat flow, A.2.1.1 to A.2.1.3 shall apply. A.2.1.1 For rounds the nominal diameter of the product (not comprising the machining allowance) shall be taken as the diameter of the ruling section. A.2.1.2 For hexagons and octagons the nominal distance between two opposite sides of the cross section shall be taken as the diameter of the ruling section. A.2.1.3 For square and rectangular bars the diameter of the ruling section shall be determined in accordance with the example shown in Figure A.1.
For a rectangular bar with a section of 40 mm 60 mm, the diameter of the ruling section is 50 mm.
Key X distance from the quenched end Y bar diameter 1 surface 2 3/4 radius 3 centre
Figure A.2 Relationship between the cooling rates in end quench test pieces (Jominy test pieces) and in quenched round bars in mildly agitated water (source: SAE J406c) Dimensions in millimetres
Figure A.3 Relationship between the cooling rates in end quench test pieces (Jominy test pieces) and in quenched round bars in mildly agitated oil (source: SAE J406c)
B.1 Mechanical properties of reference test pieces in the quenched and tempered condition
For deliveries in a condition other than quenched and tempered or normalized, the requirements for the mechanical properties in the quenched and tempered condition shall be verified on a reference test piece. In the case of bars and rods, the sample to be quenched and tempered shall, unless otherwise agreed, have the cross-section of the product. In all other cases the dimensions and the manufacture of the sample shall be agreed at the time of enquiry and order, where appropriate, while taking into consideration the indications for the determination of the ruling section given in Annex A. The samples shall be quenched and tempered in accordance with the conditions given in the tables for the heat-treatment conditions in EN 10083-2 or EN 10083-3 or as agreed at the time of enquiry and order. The details of the heat treatment shall be given in the inspection document. The test pieces shall, unless otherwise agreed, be taken in accordance with Figure 1 for bars and rods and in accordance with Figure 3 for flat products. B.2 Mechanical properties of reference test pieces in the normalized condition For deliveries of non-alloy steels in a condition other than quenched and tempered or normalized, the requirements for the mechanical properties in the normalized condition shall be verified on a reference test piece. In the case of bars and rods, the sample to be normalized shall, unless otherwise agreed, have the crosssection of the product. In all other cases the dimensions and the preparation of the sample shall be agreed at the time of enquiry and order.
The details of the heat treatment shall be given in the inspection document. The test pieces shall, unless otherwise agreed, be taken in accordance with Figure 1 in the case of bars and rods and with Figure 3 in the case of flat products. B.3 Fine grain steel
When tested in accordance with EN ISO 643, the steel shall have an austenite grain size of 5 or finer. If specific testing is ordered, it shall also be agreed whether this grain size requirement is to be verified by determining the aluminium content or micrographically. In the first case, the aluminium content shall also be agreed. In the second case, one test piece shall be inspected per cast for the determination of the austenitic grain size. Sampling and sample preparation shall be as specified in EN ISO 643. For further details see EN 10083-2:2006, A.3 and EN 10083-3:2006, A.3. B.4 Non-metallic inclusion content This requirement is applicable to special steels. The microscopically determined non-metallic inclusion content shall be within agreed limits when tested according to a procedure to be agreed at the time of enquiry and order (see Annex E).
NOTE 1 The requirements for non metallic inclusion content apply in every case, however, verification requires a special agreement.
B.5 Non-destructive testing
Steel flat products of thickness equal to or greater than 6 mm shall be tested ultrasonically in accordance with EN 10160 and steel bars shall be tested ultrasonically in accordance with EN 10308. Other products shall be non-destructively tested in accordance with a method to be agreed at the time of enquiry and order and to acceptance criteria also to be agreed at the time of enquiry and order. B.6 Product analysis
The conditions for sampling shall be in accordance with EN ISO 14284. In the case of dispute about the analytical method, the chemical composition shall be determined in accordance with a reference method taken from one of the European Standards in CR 10261. B.7 Special agreements for marking
The products shall be specially marked (e.g. by bar coding in accordance with EN 606) in a way agreed upon at the time of enquiry and order.
One product analysis shall be carried out per cast for elements for which values are specified for the cast analysis of the steel type concerned.
For steels with a specified minimum sulphur content the agreements should only concern the oxides.
European Standards partially covering the same or very similar steel grades as in EN 10083-2 and EN 10083-3, but intended for other product forms or treatment conditions or for special applications: EN 10084, Case hardening steels Technical delivery conditions EN 10085, Nitriding steels Technical delivery conditions
EN 10087, Free-cutting steels Technical delivery conditions for semi-finished products, hot-rolled bars and rods EN 10089, Hot-rolled steels for quenched and tempered springs Technical delivery conditions
EN 10132-1, Cold-rolled narrow steel strip for heat-treatment Technical delivery conditions Part 1: General EN 10132-3, Cold-rolled narrow steel strip for heat-treatment Technical delivery conditions Part 3: Steels for quenching and tempering EN 10132-4, Cold-rolled narrow steel strip for heat-treatment Technical delivery conditions Part 4: Spring steels and other applications EN 10250-1, Open die steel forgings for general engineering purposes Part 1: General requirements
EN 10250-3, Open die steel forgings for general engineering purposes Part 3: Alloy special steels
EN 10263-1, Steel rod, bars and wire for cold heading and cold extrusion Part 1: General technical delivery conditions EN 10263-4, Steel rod, bars and wire for cold heading and cold extrusion Part 4: Technical delivery conditions for steels for quenching and tempering EN 10277-1, Bright steel products Technical delivery conditions Part 1: General EN 10277-5, Bright steel products Technical delivery conditions Part 5: Steels for quenching and tempering
EN 10250-2, Open die steel forgings for general engineering purposes Part 2: Non-alloy quality and special steels
EN 10017, Steel rod for drawing and/or cold rolling Dimensions and tolerances
For hot rolled bars:
EN 10058, Hot rolled flat steel bars for general purposes Dimensions and tolerances on shape and dimensions EN 10059, Hot rolled square steel bars for general purposes Dimensions and tolerances on shape and dimensions EN 10060, Hot rolled round steel bars for general purposes Dimensions and tolerances on shape and dimensions EN 10061, Hot rolled hexagon steel bars for general purposes Dimensions and tolerances on shape and dimensions For hot rolled strip and sheet/plate:
EN 10029, Hot rolled steel plates 3 mm thick or above Tolerances on dimensions, shape and mass
EN 10048, Hot rolled narrow steel strip Tolerances on dimensions and shape EN 10051, Continuously hot-rolled uncoated plate, sheet and strip of non-alloy and alloy steels Tolerances on dimensions and shape
EN 10108, Round steel rod for cold heading and cold extrusion Dimensions and tolerances
E.1 For the microscopic determination of the non-metallic inclusions in special steels, agreement may be reached at the time of enquiry and order on a test in accordance with one of the following standards: prEN 10247, Micrographic examination of the non-metallic inclusion content of steels using standard pictures
NF A 04-106, Iron and steel Methods for the determination of the non-metallic inclusion content of steel Part 2: Microscopic methods with standard series SS 111116, Steel Methods for estimation of the content of non-metallic inclusions Microscopic methods Jernkontoret's inclusion chart II for the assessment of non-metallic inclusions
If evidence is provided in accordance with DIN 50602, the requirements specified in Table E.1 apply. Table E.1 Requirements of microscopic degree of purity when tested in accordance with DIN 50602 (method K) (applicable to oxidic non-metallic inclusions)
Bars diameter d mm 140 < d 200 100 < d 140 70 < d 100 35 < d 70 17 < d 35 8 < d 17 d8
Total characteristic value K (oxides) for the individual cast
DIN 50602, Metallographic examination; microscopic examination of special steels using standard diagrams to assess the content of non-metallic inclusions
If evidence is provided in accordance with NF A 04-106, the requirements specified in Table E.2 apply. Table E.2 Requirements of microscopic degree of purity when tested in accordance with NF A 04-106 Inclusion type Type B Type C Type D Series fine thick fine thick fine thick Limiting value 2,5 1,0 2,5 1,5 1,5 1,0
If evidence is provided in accordance with SS 111116, the requirements specified in Table E.3 apply. Table E.3 Requirements of microscopic degree of purity when tested in accordance with SS 111116 Inclusion type Type B
Series fine middle thick fine middle thick fine middle thick
Limiting value 4 3 2 4 3 2 4 3 2
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