kSIST FprEN 10132:2021
(Main)Cold rolled narrow steel strip for heat treatment - Technical delivery conditions
Cold rolled narrow steel strip for heat treatment - Technical delivery conditions
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).
Kaltband aus Stahl für eine Wärmebehandlung - Technische Lieferbedingungen
Dieses Dokument legt die technischen Lieferbedingungen für unlegiertes und legiertes Kaltband aus Stahl, hergestellt in Form von Coils und Kaltband in Stäben, in Walzbreiten kleiner als 600 mm fest. Kaltband ist verfügbar in Stahlsorten zum Einsatzhärten und zum Vergüten für allgemeine und besondere Anwendungen, insbesondere auch für Federn.
Einsatzstähle in Dicken bis einschließlich 10 mm;
Vergütungsstähle in Dicken bis einschließlich 6 mm in den Zuständen weichgeglüht (+A), weichgeglüht und leicht nachgewalzt (+LC) oder kaltgewalzt (+CR);
Stähle im Vergütungszustand (+QT) in Dicken zwischen 0,30 mm und 3,00 mm.
In besonderen Fällen können Zusatzanforderungen oder Abweichungen bezüglich dieses Dokumentes zwischen Besteller und Lieferer bei der Anfrage und Bestellung vereinbart werden. (siehe 5.2 und Anhang A).
Zusätzlich zu den Angaben dieses Dokumentes gelten die allgemeinen technischen Lieferbedingungen nach EN 10021.
Dieses Dokument umfasst nicht kaltgewalzte Flacherzeugnisse für die eigene Normen vorliegen, z. B.:
Kaltband ohne Überzug aus weichen Stählen zum Kaltumformen (EN 10139);
kaltgewalzte Flacherzeugnisse aus Stählen mit hoher Streckgrenze zum Kaltumformen (EN 10268).
Feuillards laminés à froid pour traitement thermique - Conditions techniques de livraison
Le présent document spécifie les conditions techniques de livraison des feuillards laminés à froid constitués de nuances d’aciers alliés et non alliés, se présentant sous forme de bobines et de feuillards coupés à longueur dont la largeur de laminage est inférieure à 600 mm. Les feuillards laminés à froid sont disponibles dans des nuances d’aciers pour cémentation et pour trempe et revenu destinées à des applications générales et spéciales, notamment pour les ressorts.
— aciers pour cémentation d’épaisseur inférieure ou égale à 10 mm ;
— aciers pour trempe et revenu d’épaisseur inférieure ou égale à 6 mm à l’état recuit (+A), recuit et skin-passé (+LC) ou laminé à froid (+CR) ;
— aciers à l’état trempé et revenu (+QT) d’épaisseur comprise entre 0,30 mm et 3,00 mm.
Dans des cas spéciaux, l’acheteur et le fournisseur peuvent, au moment de l’appel d’offres et de la commande, convenir d’exigences supplémentaires ou de divergences par rapport au présent document (voir 5.2 et l’Annexe A).
Outre les exigences du présent document, les exigences relatives aux conditions techniques générales de livraison spécifiées dans l’EN 10021 s’appliquent.
Le présent document ne traite pas des produits plats laminés à froid pour lesquels il existe des normes séparées, par exemple :
— feuillards non revêtus laminés à froid en aciers à bas carbone pour formage à froid (EN 10139) ;
— produits plats laminés à froid à haute limite d’élasticité pour formage à froid (EN 10268).
Hladno valjani ozki jekleni trakovi za toplotno obdelavo - Tehnični dobavni pogoji
General Information
RELATIONS
Standards Content (sample)
SLOVENSKI STANDARD
oSIST prEN 10132:2020
01-oktober-2020
Hladno valjani ozki jekleni trakovi za toplotno obdelavo - Tehnični dobavni pogoji
Cold rolled narrow steel strip for heat treatment - Technical delivery conditions
Kaltband aus Stahl für eine Wärmebehandlung - Technische LieferbedingungenFeuillards laminés à froid pour traitement thermique - Conditions techniques de livraison
Ta slovenski standard je istoveten z: prEN 10132ICS:
77.140.10 Jekla za toplotno obdelavo Heat-treatable steels
77.140.50 Ploščati jekleni izdelki in Flat steel products and semi-
polizdelki products
oSIST prEN 10132:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 10132:2020
DRAFT
EUROPEAN STANDARD
prEN 10132
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2020
ICS 77.140.10; 77.140.25; 77.140.50 Will supersede EN 10132-1:2000, EN 10132-2:2000,
EN 10132-3:2000, EN 10132-4:2000English Version
Cold rolled narrow steel strip for heat treatment -
Technical delivery conditions
Kaltband aus Stahl für eine Wärmebehandlung -
Technische Lieferbedingungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 459/SC 5.If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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.Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10132:2020 E
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Contents Page
European foreword ....................................................................................................................................................... 3
1 Scope .................................................................................................................................................................... 4
2 Normative references .................................................................................................................................... 4
3 Terms and definitions ................................................................................................................................... 5
4 Classification and designation .................................................................................................................... 5
5 Information to be supplied by the purchaser ....................................................................................... 5
6 Manufacturing process .................................................................................................................................. 7
7 Requirements ................................................................................................................................................... 7
8 Inspection ....................................................................................................................................................... 10
9 Sampling .......................................................................................................................................................... 11
10 Test methods ................................................................................................................................................. 11
11 Surface protection, coiling, packaging and marking ....................................................................... 12
Annex A (normative) Supplementary or special requirements ............................................................... 21
A.1 General ............................................................................................................................................................. 21
A.2 Bend test .......................................................................................................................................................... 21
A.3 Fine grain structure..................................................................................................................................... 21
A.3.1 Verification of fine grain structure for case hardening steels ..................................................... 21
A.3.2 Verification of fine grain structure for steels for quenching and tempering ......................... 21
A.4 Microscopic non-metallic inclusions..................................................................................................... 21
A.5 Decarburisation ............................................................................................................................................ 22
A.6 Spheroidisation of carbides ..................................................................................................................... 22
A.7 Roughness ....................................................................................................................................................... 22
Bibliography ................................................................................................................................................................. 23
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European foreword
This document (prEN 10132:2020) 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 document is currently submitted to the CEN Enquiry.
This document will supersede 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 −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.
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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 referencesThe 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 steelEN 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 productsEN 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)
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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 6508-1:2016)
EN ISO 6892-1:2019, Metallic materials – Tensile testing – Part 1: Method of test at room temperature
(ISO 6892-1:2019)ISO 14284, Steel and iron — Sampling and preparation of samples for the determination of chemical
composition3 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 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 http://www.iso.org/obp— IEC Electropedia: available at http://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 designation4.1 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;
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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 examplesEXAMPLE 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 – 1,50x200EN 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
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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 castThe products shall be delivered by cast or part of a cast. Each product shall be traceable to the cast.
7 Requirements7.1 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
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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.2NOTE 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 All thicknesses and RR rough
and scratches are permitted delivery conditions
RM matt,
RL smooth
MB Bright, metallic clean surface; pitting grooves a RM matt
Thicknesses ≤ 2,00 mm
and scratches are permitted as long as the
and all delivery conditions RL smooth
uniform smooth appearance is not substantially
except +A
impaired when viewed with the naked eye
The supply of products of greater thicknesses with this surface appearance shall be agreed at the time of enquiry and
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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 finishesSurface finish Note Symbol Mean surface
roughness
Ra, µm
for conditions +A, +LC and +CR
rough – RR Ra ≥ 1,5 μm
matt – RM 0,6 μm < Ra ≤ 1,8 μm
smooth – RL Ra ≤ 0,6 μm
for condition +QT
oxide finish unpolished (e.g. –
grey/blue)
Ra ≤ 0,6 μm
bright unpolished –
tempered
polished obtained by fine grinding, –
abrasive brushing or
other processes
max. Ra value
may be agreed at the
polished and blue, yellow or other –
time of enquiry and
coloured colours obtained by
order
oxidization by heat
treatment or other
processes
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 DecarburisationIndependent 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 thicknesses lower than 0,20 mm: max. 4 µm per side;
— For alloy steel grades max. 3 % of the material thickness per side;
for thicknesses lower than 0,20 mm: max. 6 µm per side.
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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 inspectionThe 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
Frequency of testing
Type of inspection and test according Refer to
to inspection certificate 3.1
Cast analysis One per cast 7.1.2
Tensile test or if agreed hardness
7.1.3, 10.2 and
test instead of tensile test in the One test per production lot
10.3
delivery condition
Mandatory
Frequency of verification left to
tests
Dimensional inspection 7.7
the manufacturer
Adequate intensity of visual
Visual examination examination of the surface 7.3
quality left to the manufacturer
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Frequency of testing
Type of inspection and test according Refer to
to inspection certificate 3.1
Product analysis for the values 7.1.2, 9.1 and
one test per production lot
specified 10.1
Bend test in condition +A or +LC one test per production lot 7.1.3 and A.2
Verification of grain size one test per production lot 7.2 and A.3
7.3, Table 2 and
Optional
Verification of roughness one test per production lot
A.7
tests
Verification of non-metallic
one test per production lot 7.4 and A.4
inclusions
Verification of decarburisation one test per production lot 7.5 and A.5
Spheroidisation of carbides one test per production lot 7.6 and A.6
9 Sampling
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
piecesThe 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.
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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 L = 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 length the mass of the bundles shall be agreed during ordering.
In case of narrow widths,...
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