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BS EN 10132:2021

BSI Standards Publication

Cold rolled narrow steel strip for heat treatment – Technical delivery conditions

BS EN 10132:2021

BRITISH STANDARD

National foreword This British Standard is the UK implementation of EN 10132:2021. It supersedes BS EN 10132-1:2000, BS EN 10132-2:2000, BS EN 101323:2000 and BS EN 10132-4:2000, which are withdrawn.

The UK participation in its preparation was entrusted to Technical Committee ISE/105, Steels for Heat Treatment, Alloy Steels, Free-Cutting Steels and Stainless Steels.

A list of organizations represented on this committee can be obtained on request to its committee manager. Contractual and legal considerations

This publication has been prepared in good faith, however no representation, warranty, assurance or undertaking (express or implied) is or will be made, and no responsibility or liability is or will be accepted by BSI in relation to the adequacy, accuracy, completeness or reasonableness of this publication. All and any such responsibility and liability is expressly disclaimed to the full extent permitted by the law. This publication is provided as is, and is to be used at the recipient’s own risk.

The recipient is advised to consider seeking professional guidance with respect to its use of this publication. This publication is not intended to constitute a contract. Users are responsible for its correct application. © The British Standards Institution 2021 Published by BSI Standards Limited 2021 ISBN 978 0 539 13632 6

ICS 77.140.10; 77.140.25; 77.140.50

Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2021. Amendments/corrigenda issued since publication Date

Text affected

EN 10132

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM

BS EN 10132:2021

September 2021

ICS 77.140.10; 77.140.25; 77.140.50

Supersedes EN 10132-1:2000, EN 10132-2:2000, EN 10132-3:2000, EN 10132-4:2000

English Version

Cold rolled narrow steel strip for heat treatment Technical delivery conditions

Feuillards laminés à froid pour traitement thermique Conditions techniques de livraison

This European Standard was approved by CEN on 18 July 2021.

Kaltband aus Stahl für eine Wärmebehandlung Technische Lieferbedingungen

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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels © 2021 CEN

All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.

Ref. No. EN 10132:2021 E

BS EN 10132:2021 EN 10132:2021 (E)

Contents

Page

European foreword....................................................................................................................................................... 3 1

Scope .................................................................................................................................................................... 4

2

Normative references .................................................................................................................................... 4

3

Terms and definitions ................................................................................................................................... 5

4 4.1 4.2

Classification and designation.................................................................................................................... 5 Classification ..................................................................................................................................................... 5 Designation........................................................................................................................................................ 5

5 5.1 5.2 5.3

Information to be supplied by the purchaser ....................................................................................... 5 Mandatory information ................................................................................................................................ 5 Options ................................................................................................................................................................ 6 Ordering examples ......................................................................................................................................... 6

6 6.1 6.2 6.3 6.4

Manufacturing process.................................................................................................................................. 7 General ................................................................................................................................................................ 7 Deoxidation ....................................................................................................................................................... 7 Delivery conditions ........................................................................................................................................ 7 Traceability of the cast .................................................................................................................................. 7

7 7.1 7.2 7.3 7.4 7.5 7.6 7.7

Requirements ................................................................................................................................................... 7 Chemical composition and mechanical properties............................................................................. 7 Grain size ............................................................................................................................................................ 8 Surface characteristics .................................................................................................................................. 8 Non-metallic inclusions ................................................................................................................................ 9 Decarburisation ............................................................................................................................................... 9 Spheroidisation of carbides ..................................................................................................................... 10 Nominal dimensions, and tolerances on dimensions and shape ................................................ 10

8 8.1 8.2 8.3

Inspection ....................................................................................................................................................... 10 Types of inspection and inspection documents ................................................................................ 10 Content of inspection documents ........................................................................................................... 10 Summary of inspection .............................................................................................................................. 10

9 9.1 9.2

Sampling .......................................................................................................................................................... 11 Selection and preparation of samples for the product analysis.................................................. 11 Location of samples, orientation of tensile test pieces and preparation of tensile test pieces ................................................................................................................................................................ 11

10 10.1 10.2 10.3 10.4

Test methods ................................................................................................................................................. 11 Chemical analysis ......................................................................................................................................... 11 Tensile test ..................................................................................................................................................... 12 Hardness test ................................................................................................................................................. 12 Retests .............................................................................................................................................................. 12

11 11.1 11.2 11.3

Surface protection, coiling, packaging and marking ....................................................................... 12 Surface protection........................................................................................................................................ 12 Coiling and bundling ................................................................................................................................... 12 Packaging and marking ............................................................................................................................. 12

Annex A (normative) Supplementary or special requirements ............................................................... 22 Bibliography ................................................................................................................................................................. 24

2

BS EN 10132:2021 EN 10132:2021 (E)

European foreword This document (EN 10132:2021) has been prepared by Technical Committee CEN/TC 459/SC 5 “Steels for heat treatment, alloy steels, free-cutting steels and stainless steels”, 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 March 2022, and conflicting national standards shall be withdrawn at the latest by March 2022.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 10132-1:2000, EN 10132-2:2000, EN 10132-3:2000, EN 10132-4:2000.

The main changes with respect to the previous editions of EN 10132-1:2000 to EN 10132-4:2000 are listed below: a) the four parts of the previous edition were merged to one standard EN 10132;

b) following steel grades were deleted in part 3: C30E, 25Mn4 and in part 4 48Si7;

c) following steel grades were added: Steel grades for quenching and tempering C25E, 20MnB5, 27MnCrB5-2, 50CrMo4, Steels grades for springs C80S, 75Cr1, 95Cr1, 58CrV4, 68CrNiMo3-3; d) steel grade C25E was added since it could replace C22E in future;

e) the chemical composition of the steel grades for case hardening and steel grades for quenching and tempering were adapted to standards EN ISO 683-1 to EN ISO 683-3;

f)

the mechanical properties of the steels for quenching and tempering and of the spring steels were partially updated;

g) the requirements concerning the surface characteristics were completely revised; h) inspection certificate 3.1 is mandatory; i)

standard completely editorially revised.

Any feedback and questions on this document should be directed to the users’ national standards body. A complete listing of these bodies can be found on the CEN website.

According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

3

BS EN 10132:2021 EN 10132:2021 (E)

1 Scope This document specifies the technical delivery conditions for cold rolled narrow steel strip made of non alloy and alloy steel grades in the form of coils and cut lengths in rolling widths less than 600 mm. Cold rolled narrow steel strip is available in grades of case hardening steel and of steels for quenching and tempering for general and special applications particularily springs. — Case hardening steels in thicknesses up to and including 10 mm;

— steels for quenching and tempering in thicknesses up to and including 6 mm in the conditions annealed (+A), annealed and skin passed (+LC) or cold rolled (+CR);

— steels in the quenched and tempered condition (+QT) in thicknesses between 0,30 mm and 3,00 mm. In special cases supplementary requirements or deviations with respect to this document can be agreed between the purchaser and the supplier at the time of enquiry and order (see 5.2 and Annex A).

In addition to the requirements of this document, the general technical delivery requirements specified in EN 10021 apply.

This document does not cover cold rolled flat products for which separate standards exist, e.g.:

— cold rolled uncoated low carbon steel narrow strip for cold forming (EN 10139);

— cold rolled steel flat products with higher yield strength for cold forming (EN 10268).

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

EN 10020, Definition and classification of grades of steel

EN 10021, General technical delivery conditions for steel products EN 10027-1, Designation systems for steels - Part 1: Steel names

EN 10027-2, Designation systems for steels - Part 2: Numerical system

EN 10049, Measurement of roughness average Ra and peak count RPc on metallic flat products EN 10079, Definition of steel products

EN 10140, Cold rolled narrow steel strip - Tolerances on dimensions and shape EN 10204, Metallic products - Types of inspection documents

EN ISO 377, Steel and steel products - Location and preparation of samples and test pieces for mechanical testing (ISO 377) EN ISO 643, Steels - Micrographic determination of the apparent grain size (ISO 643)

EN ISO 3887, Steels - Determination of the depth of decarburization (ISO 3887) EN ISO 4885, Ferrous materials - Heat treatments - Vocabulary (ISO 4885)

4

BS EN 10132:2021 EN 10132:2021 (E) EN ISO 6507-1, Metallic materials - Vickers hardness test - Part 1: Test method (ISO 6507-1)

EN ISO 6508-1, Metallic materials - Rockwell hardness test - Part 1: Test method (ISO 6508-1)

EN ISO 6892-1:2019, Metallic materials - Tensile testing - Part 1: Method of test at room temperature (ISO 6892-1:2019)

EN ISO 14284, Steel and iron - Sampling and preparation of samples for the determination of chemical composition (ISO 14284)

3 Terms and definitions

For the purposes of this document, the following terms and definitions in EN 10020, EN 10021, EN 10079, EN ISO 377, EN ISO 4885 and EN ISO 14284 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses: — ISO Online browsing platform: available at https://www.iso.org/obp — IEC Electropedia: available at https://www.electropedia.org/

3.1 production lot products from the same cast, with the same thickness and the same heat-treatment cycle

4 Classification and designation 4.1 Classification

The classification of the relevant steel grades is allocated in accordance with EN 10020. All steel grades according to Table 4 are non alloy special steels. All steel grades according to Table 5 are alloy special steels.

4.2 Designation

For the steel grades covered by this document, the steel names and numbers given in the relevant tables shall be allocated in accordance with EN 10027-1 and EN 10027-2.

5 Information to be supplied by the purchaser 5.1 Mandatory information

The following information shall be supplied by the purchaser at the time of enquiry and order to enable the supplier to comply with the requirements of this document: a) the quantity to be delivered;

b) the designation of the product form (cold rolled narrow strip in coils or cold rolled narrow strip in cut lengths); c) the number of the standard for tolerances on dimensions and shape (EN 10140);

d) the dimensions and tolerances on dimensions and shape and in the case of cut lengths, the length in millimetres, and, if applicable, letters denoting relevant special tolerances; e) the number of this document;

5

BS EN 10132:2021 EN 10132:2021 (E) f)

steel name or steel number (see 4.2);

g) the delivery condition (see 6.3);

h) the tolerance for tensile strength or hardness, for delivery condition CR and QT;

i)

the surface appearance and the surface finish (see 7.3).

5.2 Options

A number of options are specified in this document and listed below. If the purchaser does not indicate any of these options, the products will be supplied in accordance with the basic specification of this document (see 5.1):

1) requirements concerning other types of edges than the usually delivered slit edges: GK = geschnittene Kanten, engl. slit edges, NK = Naturkanten, engl. mill edges, SK = Sonderkanten, engl. special edges; 2) verification of the chemical composition with product analysis (see 7.1.2, 9.1 and 10.1); 3) verification of the roughness of the surface (see 7.3, Table 2 and A.7)

4) special requirements concerning bend test (see 7.1.3 and A.2);

5) special requirements relating to grain size and verification (see 7.2 and A.3);

6) requirements concerning non-metallic inclusions and verification (see 7.4 and A.4);

7) requirements concerning the depth of decarburisation and verification (see 7.5 and A.5);

8) requirements concerning the spheroidisation of carbides and verification (see 7.6 and A.6); 9) requirements concerning protection during transport and handling (see 11.1);

10) requirements on dimension(s) and/or mass of coils and in the case of cut lengths on the mass of the bundles (see 11.2);

11) requirements on the method of packaging (see 11.3);

12) special requirements on marking including bar coding and labelling (see 11.3).

5.3 Ordering examples

EXAMPLE 1 5 tons of cold rolled narrow strip according to EN 10140 with a nominal thickness of 1,50 mm normal tolerances on thickness, with a nominal width of 200 mm with slit edges (GK), normal tolerances on width according to this document made of steel grade C10E in light skin passed condition (+LC) with a bright uniform surface appearance (MB) and a matt surface finish (RM) and an inspection certificate 3.1: 5 tons cold rolled narrow strip EN 10140 – 1,50x200 EN 10132 – C10E+LC–MB–RM

EXAMPLE 2 10 tons of cold rolled narrow strip in cut lengths according to EN 10140 with a nominal thickness of 2,00 mm, normal tolerances on thickness, with a nominal width of 450 mm with slit edges (GK), normal tolerances on width, with nominal lengths of 3000 mm, normal tolerances on length, according to this document

6

BS EN 10132:2021 EN 10132:2021 (E) made of steel grade C75S, in quenched and tempered condition (+QT), hardness tolerance 440 to 490 HV with a bright tempered surface and an inspection certificate 3.1: 10 tons of cold rolled narrow strip in cut lengths EN 10140 – 2,00x450x3000 EN 10132 – C75S+QT – hardness 440 to 490 HV, bright tempered

6 Manufacturing process 6.1 General

The manufacturing process of the steel and of the products is, with the restrictions given by the requirements in 6.2 and 6.4, left to the discretion of the manufacturer.

6.2 Deoxidation

All steels shall be deoxidized.

6.3 Delivery conditions

Cold rolled narrow steel strip shall be supplied in one of the following delivery conditions as indicated in Table 7:

— annealed (+A);

— annealed and skin passed (+LC); — cold rolled (+CR); or

— quenched and tempered (+QT).

The delivery condition – annealed to achieve spheroidised carbides (+AC) – may be agreed. In such cases, limits on spheroidisation and mechanical properties may also be agreed at the time of enquiry and order. The condition cold rolled (+CR) can also be applied to annealed material. The condition quenched and tempered (+QT) is aiming for a martensitic and/or bainitic structure. Specific structures may be agreed.

6.4 Traceability of the cast

The products shall be delivered by cast or part of a cast. Each product shall be traceable to the cast.

7 Requirements

7.1 Chemical composition and mechanical properties 7.1.1 General The steel grades given in Tables 4 and 5 are delivered in the conditions as mentioned in 6.3. The manufacturer is responsible, using the means he thinks fit, for controlling his production from the point of view of the various quality criteria specified. 7.1.2 Chemical composition

The chemical composition determined by cast analysis shall comply with the values in Tables 4 and 5.

Permissible deviations between the limiting values for cast analysis and the values for product analysis are given in Table 6.

7

BS EN 10132:2021 EN 10132:2021 (E) The product analysis shall be carried out when specified at the time of enquiry and order (see 9.1 and 10.1). 7.1.3 Mechanical properties

The mechanical properties of the products are given in Table 7. The tensile test is the usual reference test for the mechanical properties. If agreed at the time of enquiry and order, the hardness test with the values given in Table 7 may be performed instead of the tensile test (and not both at the same time).

For the delivery conditions +CR and +QT the steels are supplied with tolerance on the tensile strength with a range of 150 MPa or with tolerances on the hardness with a range of 50 HV as indicated by the purchaser at the time of enquiry and order, see also Table 7, footnotes c and d.

For thicknesses outside this range mentioned in Clause 1, the mechanical properties shall be agreed between the purchaser and the supplier.

Requirements for a bend test for steels in the annealed condition (+A) or annealed and skin passed condition (+LC) may be agreed at the time of enquiry and order, see A.2 NOTE 1 For steels for quenching and tempering guidelines for the heat treatment and the minimum hardness values in the quenched condition without tempering are shown in Table 8.

The steel may be quenched in water, oil or isothermally treated (e. g. metal bath), see Table 8.

NOTE 2 For those purchasers who specify Rockwell hardness rather than Vickers hardness or tensile strength, Table 9 shows Rockwell hardness values for information.

7.2 Grain size

Unless otherwise agreed at the time of ordering, the grain size shall be left to the discretion of the manufacturer. If a fine grain structure is required, the special requirement as detailed in A.3 shall be ordered.

7.3 Surface characteristics

Surface characteristics relate to a) surface appearance, see Table 1, for delivery conditions +A or +LC or +CR only and to b) surface finish, see Table 2 for all delivery conditions.

The appearences indicated in Table 1 for the conditions +A, +LC or +CR apply to the upper/outside surface of coils and the upper/top surface of cut lengths. The appearance of the other side shall correspond at least to surface appearance MA. These requirements to the appearances shall not apply to the first two inner and outer laps of coil or to cut lengths cut from them. Table 1 — Surface appearances for the conditions +A, +LC and +CR Surface appearance Symbol

Characteristic

Field of application

Available surface finishes (see Table 2)

MA

Bright, metallic clean surface; pitting grooves and scratches are permitted

All thicknesses and delivery conditions

RR rough

MB

Bright, metallic clean surface; pitting grooves and scratches are permitted as long as the uniform smooth appearance is not substantially impaired when viewed with the naked eye

Thicknesses ≤ 2,00 mm a and all delivery conditions except +A

RM matt

a

RM matt,

RL smooth RL smooth

The supply of products of greater thicknesses with this surface appearance shall be agreed at the time of enquiry and order.

8

BS EN 10132:2021 EN 10132:2021 (E) Cold rolled flat products in conditions +A, +LC or +CR shall be ordered by the purchaser at the time of enquiry and order with surface appearance MA or MB and the available surface finish as described in Table 1 (see 5.1). If not specified in the order, the products in the conditions +A or +LC or +CR shall be supplied with a surface appearance MA and a surface finish RL (Ra ≤ 0,6 μm).

Cold rolled flat products in condition +QT shall be ordered with one of the available surface finishes as described in Table 2. If not specified in the order, the products shall be supplied in the condition oxide finish. Due to the processing for cold rolled narrow steel strip in the condition +QT single scratches are possible. The depth of such scratches measured in roughness Ra shall be lower than 15 µm. Table 2 — Surface finishes

Surface finish

Note

Symbol

for conditions +A, +LC and +CR rough

–

smooth

–

matt

RR

–

RM RL

for condition +QT

oxide finish

unpolished (e.g. grey/blue)

–

polished

obtained by fine grinding, abrasive brushing or other processes

–

bright tempered

polished and coloured

unpolished

blue, yellow or other colours obtained by oxidization by heat treatment or other processes

–

–

Mean surface roughness Ra, µm Ra ≥ 1,5 μm

0,6 μm < Ra ≤ 1,8 μm Ra ≤ 0,6 μm Ra ≤ 0,6 μm

max. Ra value may be agreed at the time of enquiry and order

7.4 Non-metallic inclusions

The steels shall have a degree of cleanliness corresponding to the special steel quality. The degree of cleanliness and the verification may be agreed at the time of enquiry and order, see A.4.

7.5 Decarburisation

Independent of their heat treatment, all steels for quenching and tempering with a minimum carbon content ≥ 0,50 % shall not have decarburisation levels exceeding the following limits when measured at a distance of at least 10 mm from the strip edge: — For non alloy steel grades

max. 2 % of the material thickness per side;

— For alloy steel grades

max. 3 % of the material thickness per side;

for thicknesses lower than 0,20 mm: max. 4 µm per side; for thicknesses lower than 0,20 mm: max. 6 µm per side.

9

BS EN 10132:2021 EN 10132:2021 (E) For verification see A.5.

7.6 Spheroidisation of carbides If carbide spheroidisation is requested, reference shall be made to A.6.

7.7 Nominal dimensions, and tolerances on dimensions and shape The nominal dimensions shall be agreed during enquiry and order. Unless otherwise agreed at the time of enquiry and order, the tolerances on dimensions and shape shall conform to EN 10140, with the exception of the width tolerances for strip in the quenched and tempered condition (+QT) which shall be agreed between purchaser and supplier. Special edges are available by agreement between supplier and purchaser, and the tolerances on width for these edges are to be agreed.

8 Inspection

8.1 Types of inspection and inspection documents Products complying with this document shall be delivered with specific inspection and an inspection certificate 3.1 according to EN 10204 unless otherwise specified.

8.2 Content of inspection documents

8.2.1 The manufacturer shall carry out appropriate process control, inspection and testing to ensure himself that the delivery complies with the requirements of the order. A statement on the conformity of the products delivered with the requirements of this specification and the order shall be included in the inspection certificate 3.1.

8.2.2 In accordance with 8.1 an inspection certificate 3.1 is to be provided. The specific inspections and tests described in Clause 10 shall be carried out and the results shall be confirmed in the inspection certificate. Optionally, the manufacturer can use the symbols of EN 10168:2004, Tables 1 and 2.

8.3 Summary of inspection

The amount of testing, the sampling conditions and the test methods to be applied for the verification of the requirements shall be in accordance with Table 3. Verification of the mechanical properties shall be carried out in the delivery condition. Table 3 — Summary of inspection

Type of inspection and test Cast analysis Mandatory tests

Tensile test or if agreed hardness test instead of tensile test in the delivery condition Dimensional inspection Visual examination

10

Frequency of testing according to inspection certificate 3.1 One per cast

One test per production lot

Refer to 7.1.2

7.1.3, 10.2 and 10.3

Frequency of verification left to 7.7 the manufacturer Adequate intensity of visual examination of the surface 7.3 quality left to the manufacturer

BS EN 10132:2021 EN 10132:2021 (E)

Type of inspection and test

Refer to

Product analysis for the values specified

one test per production lot

7.1.2, 9.1 and 10.1

Verification of grain size

one test per production lot

7.2 and A.3

Bend test in condition +A or +LC Optional tests

Frequency of testing according to inspection certificate 3.1

Verification of roughness Verification inclusions

of

non-metallic

Verification of decarburisation Spheroidisation of carbides

9 Sampling

one test per production lot one test per production lot

one test per production lot one test per production lot one test per production lot

7.1.3 and A.2

7.3, Table 2 and A.7 7.4 and A.4 7.5 and A.5 7.6 and A.6

9.1 Selection and preparation of samples for the product analysis Samples for the product analysis, if required, shall be taken from the production lot. The selection and preparation of the sample shall be in accordance with EN ISO 14284.

9.2 Location of samples, orientation of tensile test pieces and preparation of tensile test pieces

The specifications of EN ISO 377 shall be observed in sampling and sample preparation. If agreed, the samples may be taken before flattening.

The samples shall be taken from products in the delivery condition. A sample of adequate size for all the tests to be carried out shall be taken from the product comprising the acceptance unit from any position on the strip or cut lengths. In cases of dispute the samples shall be taken from a position at least 3 m from one of the ends of the coil.

The tensile test pieces shall be taken from samples parallel to the direction in which the product was rolled, in a position halfway between the centre and a longitudinal edge (see EN ISO 377). The test pieces should not be further worked on either surface.

When cutting the test pieces from the sample, the deformation shall be minimized as far as possible. If shears or cutting torches are used, an adequate surplus shall be allowed, which will then be further worked.

10 Test methods

10.1 Chemical analysis The choice of a suitable physical or chemical analytical method for the analysis shall be at the discretion of the manufacturer. In cases of dispute, the method for the product analysis used shall be agreed taking into account the relevant existing European Standards. A list of available European Standards on chemical analysis is given in CEN/TR 10261.

11

BS EN 10132:2021 EN 10132:2021 (E) 10.2 Tensile test The tensile test shall be carried out in accordance with EN ISO 6892-1. The manufacturer may choose between method A or B specified in EN ISO 6892-1 for the tensile test.

The test pieces shall always have a gauge length Lo = 80 mm and a width of 20 mm (test piece number 2 of EN ISO 6892-1:2019, Annex B).

10.3 Hardness test

The hardness test shall be carried out in accordance with EN ISO 6507-1 (Vickers) or EN ISO 6508-1 (Rockwell).

10.4 Retests

For retests, EN 10021 shall apply.

11 Surface protection, coiling, packaging and marking 11.1 Surface protection The products are normally supplied oiled. In this case, both sides are protected by a coat of non-drying neutral oil, free from foreign bodies and spread uniformly so that under the normal packing, transport, loading and storage conditions there will be no corrosion after three months. The oil film shall be removable by an alkaline solution or other normal solvents. If the transport and storage conditions make special corrosion protection necessary, the user shall inform the manufacturer of this at the time of ordering. In this case the selection of protection oils shall be the subject of a separate agreement.

If the products are supplied in the as-rolled condition, or without oil, there is an increased risk of scratching and rust formation during transportation and storage.

11.2 Coiling and bundling

The internal/external diameter and/or the mass of the coil to be delivered shall be agreed during ordering. In case of cut lengths the mass of the bundles shall be agreed during ordering.

In case of narrow widths, strip complying with this document can also be wound in layers and supplied in the form of an oscillated wound coil / bobbin.

11.3 Packaging and marking

The method of packaging of the product to be delivered shall be agreed during ordering.

The manufacturer shall mark the products in a suitable way so that it is possible to identify the manufacturer's name or symbol, the cast number, the batch or lot number, the nominal dimensions and the steel grade. Where cold rolled narrow strip in cut lengths is supplied bundled, the required marking may be on a lable, which shall be securely attached to the bundle. Any special or additional marking or label shall be agreed upon at the time of the enquiry or order.

Bar coding according to EN 606 can be agreed at the time of enquiry and order.

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BS EN 10132:2021 EN 10132:2021 (E) Table 4 — Chemical composition of non-alloy steels (cast analysis) Steel designation Name C10E C15E

Number

C

Si

Mn

P

1.1121

0,07 to 0,13

0,40

0,30 to 0,60

0,025

1.1141

C22E

1.1151

C35E

1.1181

C25E C40E C45E C50E C55E C60E

1.1158 1.1186 1.1191 1.1206 1.1203 1.1221

0,12 to 0,18

0,40

0,17 to 0,24

0,40

0,32 to 0,39

0,40

0,22 to 0,29 0,37 to 0,44 0,42 to 0,50 0,47 to 0,55 0,52 to 0,60 0,57 to 0,65

0,30 to 0,60

C90S

C100S C125S a

1.1269 1.1217 1.1274 1.1224

0,80 to 0,90 0,85 to 0,95 0,95 to 1,05 1,20 to 1,30

0,40

0,30

–

0,025

0,035

0,40

0,40 0,40 0,40 0,40 0,40 0,40

0,15 to 0,35 0,15 to 0,35 0,10 to 0,35 0,15 to 0,35 0,15 to 0,35 0,15 to 0,35 0,15 to 0,35

0,10

0,40

0,30

– 0,63

0,50 to 0,80

0,025

0,035

0,40

0,10

0,40

0,30

0,63

0,40 to 0,70 0,50 to 0,80 0,50 to 0,80 0,60 to 0,90 0,60 to 0,90 0,60 to 0,90

0,60 to 0,90

C85S

0,10

0,30

0,15 to 0,35

0,75 to 0,85

0,40

0,40

0,65 to 0,73

1.1284

0,035

0,10

1.1231

C80S

Cr+Mo+Ni

0,40

C67S

0,70 to 0,80

Cu

0,035

C55S

1.1248

Ni

0,025

0,60 to 0,90

C75S

Mo

0,40 to 0,70

0,15 to 0,35

0,57 to 0,65

Cr

Steels for quenching and tempering

0,52 to 0,60

1.1211

S

Case hardening steels

1.1204

C60S

% by mass a, b

0,60 to 0,90 0,60 to 0,90 0,30 to 0,70 0,40 to 0,70 0,40 to 0,70 0,30 to 0,60 0,30 to 0,60

0,025 0,025 0,025 0,025 0,025 0,025

0,035 0,035 0,035 0,035 0,035 0,035

Steels for springs

0,40 0,40 0,40 0,40 0,40 0,40

0,10 0,10 0,10 0,10 0,10 0,10

0,40 0,40 0,40 0,40 0,40 0,40

0,30 0,30 0,30 0,30 0,30 0,30

0,63 0,63 0,63 0,63 0,63 0,63

0,025

0,025

0,40

0,10

0,40

0,30

0,63

0,025

0,025

0,40

0,10

0,40

0,30

0,63

0,025 0,025 0,025 0,025 0,025 0,025 0,025

0,025 0,025 0,025 0,025 0,025 0,025 0,025

0,40 0,40 0,40 0,40 0,40 0,40

0,40

0,10 0,10 0,10 0,10 0,10 0,10 0,10

0,40 0,40 0,40 0,40 0,40 0,40

0,40

0,30 0,30 0,30 0,30 0,30 0,30 0,30

0,63 0,63 0,63 0,63 0,63 0,63

0,63

Elements not quoted in this table shall not be intentionally added to the steel without the agreement of the purchaser, other than for the purpose of finishing the heat. All reasonable precautions shall be taken to prevent the addition, from scrap or other material used in manufacture, of such elements which affect the hardenability, mechanical properties and application. b

Maximum values unless otherwise stated.

13

BS EN 10132:2021 EN 10132:2021 (E) Table 5 — Chemical composition of alloy steels (cast analysis) Steel designation Name 17Cr3

16MnCr5

Number

C

Si

Mn

P

1.7016

0,12 to 0,20

0,40

0,60 to 0,90

0,025

1.7131

20MnB5

1.5530

27MnCrB5–2

1.7182

25CrMo4

1.7218

42CrMo4

1.7225

34CrMo4

50CrMo4

1.7220

1.7228

0,14 to 0,19 0,17 to 0,23

0,40 0,40

0,24 to 0,30

0,40

0,30 to 0,37

0,40

0,22 to 0,29

0,40

0,38 to 0,45

0,40

0,46 to 0,54

% by mass a, b S

Cr

Mo

Ni

others

0,035

0,70 to 1,25

-

-

Cu: 0,40

Cu: 0,40

Case hardening steels

1,00 to 1,30

0,025

0,035

Steels for quenching and tempering

0,40

1,10 to 1,40

–

–

–

1,10 to 1,40

0,025

0,035

–

–

0,60 to 0,90 0,60 to 0,90

0,025

0,90 to 1,20

0,15 to 0,30

–

0,60 to 0,90

0,025

0,035

0,30 to 0,60

0,025

0,035

0,90 to 1,20

0,15 to 0,30

–

0,50 to 0,80

0,025

0,035

0,035

Steels for springs

0,52 to 0,60

1,60 to 2,00

0,60 to 0,90

0,025

0,025

95Cr1

1.2018

0,90 to 1,00

0,15 to 0,30

0,20 to 0,40

0,025

0,025

102Cr6 125Cr2

80CrV2

1.2067 1.2002 1.2235

51CrV4

1.8159

58CrV4

1.8161

68CrNiMo3– 3

1.6595

75Ni8

14

1.5634

0,70 to 0,80 0,95 to 1,10 1,20 to 1,30 0,75 to 0,85 0,47 to 0,55

0,25 to 0,50 0,15 to 0,35 0,15 to 0,35 0,15 to 0,35 0,40

0,55 to 0,62

0,15 to 0,40

0,72 to 0,78

0,15 to 0,35

0,64 to 0,72

0,15 to 0,35

-

0,035

1.5026 1.2003

-

0,025

56Si7

75Cr1

0,80 to 1,10

0,60 to 0,80 0,20 to 0,40 0,25 to 0,40 0,30 to 0,50 0,70 to 1,10

0,025

0,025 0,025 0,025

0,90 to 1,20

0,15 to 0,30 0,15 to 0,30

–

–

–

Cu: 0,40

0,40 to 0,60

0,10

0,40

0,025

0,30 to 0,50

0,025 0,025

0,025 0,025

Cu: 0,40

–

0,40

0,025

Cu: 0,40

0,30 to 0,40

0,10

0,70 to 1,10

Cu: 0,40

Cu: 0,40

1,35 to 1,60

0,025

Cu: 0,40

0,40

0,025

0,025

Cu: 0,40

B: 0,0008 to 0,0050

0,10

0,30 to 0,40

0,025

B: 0,0008 to 0,0050

0,40

0,025

0,025

0,30 to 0,50

0,90 to 1,20

Cu: 0,40

0,40 to 0,60

0,90 to 1,20 0,90 to 1,20 0,40 to 0,60 0,15

–

0,10

–

0,40

0,10

0,40

–

–

0,15 to 0,30

0,50 to 0,75

0,10

1,80 to 2,10

Cu: 0,40

Cu: 0,40 Cu: 0,40

Cu: 0,40

V: 0,15 to 0,25 Cu: 0,40

V: 0,10 to 0,25 Cu: 0,40

V: 0,10 to 0,20 Cu: 0,40

Cu: 0,40

BS EN 10132:2021 EN 10132:2021 (E) Steel designation

a

Name

Number

C

Si

Mn

P

% by mass a, b S

Cr

Mo

Ni

others

Elements not quoted in this table shall not be intentionally added to the steel without the agreement of the purchaser, other than for the purpose of finishing the heat. All reasonable precautions shall be taken to prevent the addition, from scrap or other material used in manufacture, of such elements which affect the hardenability, mechanical properties and application. b

Maximum values unless otherwise stated.

Table 6 — Permissible deviation between the product analysis and the limiting values given in Tables 4 and 5 for the cast analysis Permissible maximum content in the cast analysis % by mass

Permissible deviation a % by mass

≤ 1,00 > 1,00 ≤ 2,00

+ 0,03 ±0,10

≤ 0,025

+ 0,005

Cr

≤ 0,40 > 0,40 ≤ 1,60

±0,03 ±0,05

Ni

≤ 1,00 > 1,00 ≤ 2,00 > 2,00 ≤ 2,10

Element

C Si

Mn P S

Mo

V

Cu B a

≤ 0,30 > 0,30 ≤ 1,00 > 1,00 ≤ 1,30 ≤ 1,00 > 1,00 ≤ 1,40 ≤ 0,035 ≤ 0,40

≤ 0,25 ≤ 0,40

≤ 0,005 0

±0,02 ±0,03 ±0,04 ±0,04 ±0,06

+ 0,005 ±0,03 ±0,03 ±0,05 ±0,07 ±0,02

+ 0,05

±0,000 3

± means that in one cast the deviation may occur over the upper value or under the lower value of the specified range in Tables 4 and 5, but not both at the same time.

15

BS EN 10132:2021 EN 10132:2021 (E) Table 7 — Mechanical properties and hardness requirements Steel designation

Delivery condition a

annealed (+A) or annealed and skin passed (+LC) Name

Number

C10E

1.1121

C22E

1.1151

C15E C25E C35E C40E C45E C50E C55E C60E

1.1141 1.1158 1.1181 1.1186 1.1191 1.1206 1.1203 1.1221

Rp0,2 e

MPa max

Rm e MPa max

A80 e % min

HV e max

Non alloy case hardening steels

cold rolled d (+CR) Rm e

HV e max

Rm e

HV e

MPa max

430

26

135

830

250

–

–

400

500

22

155

900

265

–

–

360

450

25

140

870

Non alloy steels for quenching and tempering 410 430 440 455 465 480 495

510 540 550 570 580 600 620

21 19 18 18 17 17 17

160 170 170

910 930 970

180

1020

185

1070

180 195

Non alloy steels for springs

1050 1100

260 270 275

1050 to 1650

325 to 505

305

1150 to 1750

300

185

1070

300

C67S

1.1231

510

640

16

200

1140

315

C75S C80S

1.1248

1.1284

C85S

1.1269

C100S

1.1274

C90S

C125S

16

1.1217 1.1224

510 525 535 545 550 600

640 660 670 680 690 740

15 15 15 14 13 11

195 200 205 210 215 220 230

1100 1170 1180 1190 1200 1200 1200

–

295

290

17 17

–

–

250 to 400

600 620

–

–

800 to 1300

480 495

–

280

1.1204 1.1211

MPa

345

C55S C60S

quenched and tempered b, c (+QT)

305 320 325 325 325 325 325

900 to 1500

1100 to 1700

1100 to 1700 1150 to 1750 1200 to 1900 1200 to 1900 1200 to 1950 1200 to 2000 1200 to 2000 1200 to 2000 1200 to 2000

280 to 460 340 to 520 345 to 530 340 to 520 345 to 530 370 to 580 370 to 580 370 to 590 370 to 600 370 to 600 370 to 600 370 to 600

BS EN 10132:2021 EN 10132:2021 (E) Steel designation

Delivery condition a

annealed (+A) or annealed and skin passed (+LC) 17Cr3

16MnCr5 20MnB5

27MnCrB5–2 25CrMo4 34CrMo4 42CrMo4 50CrMo4

1.7016 1.7131 1.5530 1.7182 1.7218 1.7220 1.7225 1.7228

Alloy case hardening steels

420 420 430 460 440 460 480 540

1.5026

600

95Cr1

1.2018

560

125Cr2

80CrV2 51CrV4 58CrV4

68CrNiMo3–3 102Cr6 75Ni8 a

b

1.2003 1.2002 1.2235 1.8159 1.8161 1.6595 1.2067 1.5634

550

21 21

170 170

f f

Alloy steels for quenching and tempering

56Si7

75Cr1

550

cold rolled d (+CR)

550 590 580 550 580 580 590 550

540 580 580 600 620 700

20 18 19 16 15 13

f

–

–

–

–

f

170

f

f

175

f

f

f

f

f

f

f

f

175 185 195 220

Alloy steels for springs

f

f

740

12

230

f

f

700

12

220

f

f

f

f

f

f

f

f

f

f

f

f

f

f

f

f

f

f

690 750 720 700 720 720 750 690

13 11 12 13 12 12 11 13

220 235 225 220 225 225 235 220

quenched and tempered b, c (+QT)

–

–

1000 to 1450

310 to 450

1020 to 1500

315 to 465

990 to 1400

1100 to 1600 1200 to 1800 1200 to 1700

305 to 435 340 to 490 370 to 550 370 to 520

1200 to 1900

370 to580

1300 to 2000

405 to 600

1200 to 2000 1200 to 1950 1200 to 1800 1200 to 1900 1200 to 1900 1300 to 2000 1200 to 1800

370 to 600 370 to 590 370 to 550 370 to 580 370 to 580 405 to 600 370 to 550

The purchaser may specify hardness or tensile values but not both. If neither is specified then tensile values shall apply.

Values apply to the quenched and tempered condition with thicknesses 0,30 mm ≤ t ≤ 3,00 mm and martensitic and/or bainitic structure. For thicker strip or other structure, the values for the mechanical properties shall be agreed at the time of enquiry and order. c

For material supplied in the quenched and tempered condition, a range of 150 MPa or 50 HV shall apply, e.g. 1150 MPa to 1300 MPa or e.g. 350 HV to 400 HV. d

For material supplied in the cold rolled condition, a range of 150 MPa or 50 HV shall apply, e.g. 700 MPa to 850 MPa or e.g. 200 HV to 250 HV.

17

BS EN 10132:2021 EN 10132:2021 (E) Steel designation

Delivery condition a

annealed (+A) or annealed and skin passed (+LC) e f

quenched and tempered b, c (+QT)

cold rolled d (+CR)

Rp0,2 = 0,2 % proof strength; Rm = tensile strength; A80 = Elongation on a gauge length of 80 mm; HV = Vickers hardness.

Cold rolled condition may be supplied on request. In this case, the mechanical properties shall be agreed at the time of enquiry and order.

Table 8 — Guidelines for the heat treatment and the minimum hardness values in the quenched condition (informative) Steel designation

Name C22E C25E C35E C40E C45E C50E C55E C60E C55S C60S C67S C75S C80S C85S C90S

C100S C125S

20MnB5

27MnCrB5–2 25CrMo4 34CrMo4 42CrMo4 50CrMo4

18

Austenitizing temperature

Number

°C

1.1151

–

Quenching medium

Non alloy steels for quenching and tempering 1.1158

–

– –

Minimum hardness a in the quenched condition without tempering HRC b, c

HV c

–

–

–

–

1.1181

840 to 880

water or oil

47

470

1.1206

810 to 850

oil or water

53

560

1.1186 1.1191 1.1203 1.1221 1.1204 1.1211 1.1231 1.1248 1.1284 1.1269 1.1217 1.1274 1.1224

830 to 870 820 to 870 805 to 845 800 to 840

water or oil water or oil

oil or water oil or water

Non alloy steels for springs 805 to 845 800 to 840 815 to 845 810 to 840 810 to 840 800 to 830 790 to 820 790 to 820 780 to 810

oil or water oil or water oil oil oil oil oil oil oil

Alloy steels for quenching and tempering

1.5530 1.7182 1.7218 1.7220 1.7225 1.7228

880 to 920

water

880 to 920

water or oil

820 to 860

oil or water

840 to 880 830 to 870 820 to 860

water or oil

oil or water oil

51 52 55 57 55 57 59 60 60 61 61 61 62 42 45 44 48 51 57

530 540 600 640 600 640 670 700 700 720 720 720 750 410 440 430 480 530 640

BS EN 10132:2021 EN 10132:2021 (E) Steel designation

Name

Austenitizing temperature

Number

56Si7

1.5026

125Cr2

1.2002

75Cr1

1.2003

95Cr1

1.2018

80CrV2

1.2235

51CrV4

1.8159

58CrV4

1.8161

68CrNiMo3–3

1.6595

102Cr6

1.2067

75Ni8

1.5634

Quenching medium

°C

Alloy steels for springs 840 to 870

oil

820 to 850

oil

810 to 840 800 to 840

oil oil

840 to 870

oil

820 to 860

oil

810 to 850

oil

810 to 840

oil

830 to 860

oil

820 to 850

oil

Minimum hardness a in the quenched condition without tempering HRC b, c

HV c

60

700

55 60

720

62

750

60

700

57

640

58

650

60

700

61

720

60

a

The thickness range up to which these minimum values apply is 0,30 mm to 3,00 mm.

c

HRC Rockwell hardness (scale C); HV Vickers hardness.

b

600

700

For thicknesses less than those allowed in EN ISO 6508-1, the scale of Rockwell hardness shall be agreed at the time of enquiry and order.

Table 9 — Reference values for Rockwell hardnesses (informative)

Steel designation Name

C10E C15E

Number

1.1121 1.1141

C22E

1.1151

C35E

1.1181

C25E C40E C45E C50E C55E C60E

1.1158 1.1186 1.1191 1.1206 1.1203 1.1221

Delivery condition a

annealed (+A) or annealed and skin passed (+LC) max. HRB d

Non alloy case hardening steels 73 76

Non alloy steels for quenching and tempering

quenched and tempered (+QT) b, c HRC d – –

78

–

86

–

80 87 88

– – –

89

33 to 49,5

91

35 to 51

90

34 to 50,5

19

BS EN 10132:2021 EN 10132:2021 (E) Steel designation Name

Number

C55S

1.1204

C67S

1.1231

C60S C75S C80S C85S C90S

C100S C125S 17Cr3

16MnCr5

1.1211 1.1248 1.1284 1.1269 1.1217 1.1274 1.1224 1.7016 1.7131

20MnB5

1.5530

25CrMo4

1.7218

27MnCrB5–2 34CrMo4 42CrMo4 50CrMo4

1.7182 1.7220 1.7225 1.7228

56Si7

1.5026

95Cr1

1.2018

75Cr1 125Cr2

80CrV2 51CrV4 58CrV4

68CrNiMo3–3 102Cr6 75Ni8 a

1.2003 1.2002 1.2235 1.8159 1.8161 1.6595 1.2067 1.5634

Delivery condition a

annealed (+A) or annealed and skin passed (+LC) max. HRB d

Non alloy steels for springs

quenched and tempered (+QT) b, c HRC d

90

34 to 50,5

92

38,5 to 54

91 93 94 94 94 95 97

Alloy case hardening steels 84 84

Alloy steels for quenching and tempering 86

35 to 51,5 38,5 to 54 38,5 to 54 38,5 to 55 38,5 to 55 38,5 to 55 38,5 to 55 – – –

89

31,5 to 45,5

88

32 to 46

87 90

31,5 to 44 35 to 48,5

94

38,5 to 52,5

96

38,5 to 50,5

95

38,5 to 55

Alloy steels for springs 94 97

38,5 to 54 42 to 55

95

38,5 to 52,5

94

38,5 to 54

94 94 97 94

38,5 to 52,5 38,5 to 54 42 to 55

38,5 to 52,5

For thicknesses less than those allowed in EN ISO 6508-1, the scale of Rockwell hardness shall be agreed at the time of enquiry and order. b

20

Values apply to the quenched and tempered condition to thicknesses 0,30 mm ≤ t ≤ 3,00 mm and martensitic and/or

BS EN 10132:2021 EN 10132:2021 (E) Steel designation Name

Number

Delivery condition a

annealed (+A) or annealed and skin passed (+LC) max. HRB d

quenched and tempered (+QT) b, c HRC d

bainitic structure. For thicker strip or other structure, the values for the mechanical properties shall be agreed at the time of enquiry and order. c

For material supplied in the quenched and tempered condition, a range of 5 HRC shall apply for hardnesses ≤ 40 HRC and a range of 4 HRC shall apply for hardnesses > 40 HRC. d

HRB Rockwell hardness (scale B); HRC Rockwell hardness (scale C).

21

BS EN 10132:2021 EN 10132:2021 (E)

Annex A (normative)

Supplementary or special requirements A.1 General One or more of the following supplementary or special requirements may be agreed upon at the time of enquiry and order. The details of these requirements may be agreed upon between the manufacturer and the purchaser at the time of enquiry and order, if necessary.

A.2 Bend test

The bend test shall be carried out in accordance with an agreed procedure and to agreed limits.

A.3 Fine grain structure

A.3.1 Verification of fine grain structure for case hardening steels When tested in accordance with EN ISO 643, fine grain steel shall have an austenite grain size of 5 or finer. If specific testing is ordered, the grain size requirement is to be verified by determining the aluminium content or micrographically. The fine grain structure is normally achieved, when the total aluminium content is a minimum of 0,018 %. In such a case, the micrographic investigation is not necessary. The aluminium content shall be given in the inspection certificate.

Otherwise, one test piece per cast shall be inspected for the determination of the apparent austenitic grain size. Sampling and sample preparation shall be as specified in EN ISO 643. The steel shall be tested in accordance with the Mc-Quaid-Ehn method described in EN ISO 643 and the grain structure shall be considered satisfactory if 70 % of the area is within the specified size limits.

A.3.2 Verification of fine grain structure for steels for quenching and tempering

When tested in accordance with EN ISO 643, fine grain steel shall have an austenite grain size of 5 or finer. If specific testing is ordered, the grain size requirement is to be verified by determining the aluminium content or micrographically. The fine grain structure is normally achieved, when the total aluminium content is a minimum of 0,018 %. In such a case, the micrographic investigation is not necessary. The aluminium content shall be given in the inspection certificate.

Otherwise, one test piece per cast shall be inspected for the determination of the apparent austenitic grain size. Sampling and sample preparation shall be as specified in EN ISO 643. The steel shall be tested in accordance with the Bechet-Beaujard method described in EN ISO 643 and the grain structure shall be considered satisfactory if 70 % of the area is within the specified size limits.

A.4 Microscopic non-metallic inclusions

The special steels shall have a certain degree of cleanness; however, verification of the non-metallic inclusion content requires a special agreement. If there is such an agreement at the time of enquiry and order, the microscopic non-metallic inclusion content shall be determined to an agreed procedure and within agreed limits, e.g. in accordance with ISO 4967, EN 10247, ASTM E45 or SEP 1571.

22

BS EN 10132:2021 EN 10132:2021 (E)

A.5 Decarburisation If agreed at the time of enquiry and order the depth of decarburisation shall be determined in accordance with the micrographic method specified in EN ISO 3887.

A.6 Spheroidisation of carbides

This requirement is applicable to products when ordered in the delivery conditions +AC, +A, +LC and +CR.

The cross-section of each test piece shall be prepared, polished and then etched by means of a suitable solution. The degree of spheroidization of cementite shall be verified by means of a microscopic examination of the section, normally with a magnification of × 500.

If so agreed at the time of ordering, the degree of spheroidization shall be assessed with reference to an agreed series of standard images, e.g.: SEP 1520 or ISO 23825.

A.7 Roughness

Surface roughness shall be determined to agreed limits in accordance with EN 10049.

23

BS EN 10132:2021 EN 10132:2021 (E)

Bibliography

[1]

EN 606, Bar coding - Transport and handling labels for steel products

[3]

EN 10247, Micrographic examination of the non-metallic inclusion content of steels using standard pictures

[2]

[4]

[5] [6] [7]

[8] [9]

24

EN 10168:2004, Steel products - Inspection documents - List of information and description

CEN/TR 10261, Iron and steel - European standards for the determination of chemical composition

ISO 4967, Steel — Determination of content of non-metallic inclusions — Micrographic method using standard diagrams

SEP 1520, Microscopic examinaton of carbide structure in steels by means of diagram series, 1998, 3rd edition SEP 1571, 2017, Evaluation of inclusions in special steels based on their surface area ASTM E45, Standard test methods for determining the inclusion content of steel

ISO 23825, Method for evaluating the nodularity of spheroidal carbides — Steels for cold heading and cold extruding

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