BS en 10132-2021 [PDF]
BS EN 10132:2021 BSI Standards Publication Cold rolled narrow steel strip for heat treatment – Technical delivery cond
50 1 612KB
![BS en 10132-2021 [PDF]](https://vdoc.tips/img/200x200/bs-en-10132-2021.jpg)
- Author / Uploaded
- mossamorris
Datei wird geladen, bitte warten...
Zitiervorschau
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 It supersedes BS EN 10132-1:2000, BS EN 10132-2:2000, BS EN 101323:2000 and BS EN 10132-4:2000, which are withdrawn.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.
12
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
This page deliberately left blank
NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW
British Standards Institution (BSI) BSI is the national body responsible for preparing British Standards and other standards-related publications, information and services. BSI is incorporated by Royal Charter. British Standards and other standardization products are published by BSI Standards Limited. About us
Reproducing extracts
We bring together business, industry, government, consumers, innovators and others to shape their combined experience and expertise into standards -based solutions.
For permission to reproduce content from BSI publications contact the BSI Copyright and Licensing team.
The knowledge embodied in our standards has been carefully assembled in a dependable format and refined through our open consultation process. Organizations of all sizes and across all sectors choose standards to help them achieve their goals.
Information on standards We can provide you with the knowledge that your organization needs to succeed. Find out more about British Standards by visiting our website at bsigroup.com/standards or contacting our Customer Services team or Knowledge Centre.
Buying standards You can buy and download PDF versions of BSI publications, including British and adopted European and international standards, through our website at bsigroup. com/shop, where hard copies can also be purchased. If you need international and foreign standards from other Standards Development Organizations, hard copies can be ordered from our Customer Services team.
Copyright in BSI publications All the content in BSI publications, including British Standards, is the property of and copyrighted by BSI or some person or entity that owns copyright in the information used (such as the international standardization bodies) and has formally licensed such information to BSI for commercial publication and use. Save for the provisions below, you may not transfer, share or disseminate any portion of the standard to any other person. You may not adapt, distribute, commercially exploit or publicly display the standard or any portion thereof in any manner whatsoever without BSI’s prior written consent.
Storing and using standards Standards purchased in soft copy format: • A British Standard purchased in soft copy format is licensed to a sole named user for personal or internal company use only. • The standard may be stored on more than one device provided that it is accessible by the sole named user only and that only one copy is accessed at any one time. • A single paper copy may be printed for personal or internal company use only. Standards purchased in hard copy format: • A British Standard purchased in hard copy format is for personal or internal company use only. • It may not be further reproduced – in any format – to create an additional copy. This includes scanning of the document. If you need more than one copy of the document, or if you wish to share the document on an internal network, you can save money by choosing a subscription product (see ‘Subscriptions’).
This page deliberately left blank
Subscriptions Our range of subscription services are designed to make using standards easier for you. For further information on our subscription products go to bsigroup. com/subscriptions. With British Standards Online (BSOL) you’ll have instant access to over 55,000 British and adopted European and international standards from your desktop. It’s available 24/7 and is refreshed daily so you’ll always be up to date. You can keep in touch with standards developments and receive substantial discounts on the purchase price of standards, both in single copy and subscription format, by becoming a BSI Subscribing Member. PLUS is an updating service exclusive to BSI Subscribing Members. You will automatically receive the latest hard copy of your standards when they’re revised or replaced. To find out more about becoming a BSI Subscribing Member and the benefits of membership, please visit bsigroup.com/shop. With a Multi-User Network Licence (MUNL) you are able to host standards publications on your intranet. Licences can cover as few or as many users as you wish. With updates supplied as soon as they’re available, you can be sure your documentation is current. For further information, email [email protected].
Revisions Our British Standards and other publications are updated by amendment or revision. We continually improve the quality of our products and services to benefit your business. If you find an inaccuracy or ambiguity within a British Standard or other BSI publication please inform the Knowledge Centre.
Useful Contacts Customer Services Tel: +44 345 086 9001 Email: [email protected] Subscriptions Tel: +44 345 086 9001 Email: [email protected] Knowledge Centre Tel: +44 20 8996 7004 Email: [email protected] Copyright & Licensing Tel: +44 20 8996 7070 Email: [email protected]
BSI Group Headquarters 389 Chiswick High Road London W4 4AL UK