Metallic materials - Sheet and strip - Determination of tensile strain hardening exponent (ISO 10275:2020)

This document specifies a method for determining the tensile strain hardening exponent n of flat
products (sheet and strip) made of metallic materials.
The method is valid only for that part of the stress-strain curve in the plastic range where the curve is
continuous and monotonic (see 8.4).
In the case of materials with a serrated stress-strain curve in the work hardening range (materials
which show the Portevin-Le Chatelier effect, e.g. AlMg-alloys), the automatic determination (linear
regression of the logarithm true stress vs. the logarithm true plastic strain, see 8.7) is used to give
reproducible results.

Metallische Werkstoffe - Blech und Band - Bestimmung des Verfestigungsexponenten im Zugversuch (ISO 10275:2020)

Dieses Dokument legt ein Verfahren zur Bestimmung des Verfestigungsexponenten n im Zugversuch von Flacherzeugnissen (Band und Blech) aus metallischen Werkstoffen fest.
Das Verfahren ist nur anwendbar für den plastischen Bereich der Spannung/Dehnung-Kurve, in dem die Kurve kontinuierlich und monoton verläuft (siehe 8.4).
Bei Werkstoffen mit gezackter Spannung/Dehnung-Kurve im Verfestigungsbereich (Werkstoffe mit Portevin Le-Chatelier-Effekt, z. B. AlMg-Legierungen) wird die automatisierte Bestimmung (lineare Regression der logarithmierten wahren Spannung über die logarithmierte wahre plastische Dehnung, siehe 8.7) angewendet, um reproduzierbare Ergebnisse zu erhalten.

Matériaux métalliques - Tôles et bandes - Détermination du coefficient d'écrouissage en traction (ISO 10275:2020)

Le présent document spécifie une méthode pour la détermination du coefficient d'écrouissage en traction, n, des produits plats (tôles et bandes) en matériaux métalliques.
La méthode n'est valable que pour la partie de la courbe contrainte-déformation dans le domaine plastique où la courbe est continue et monotone (voir 8.4).
Dans le cas de matériaux avec une courbe contrainte-déformation en dents de scie dans le domaine de consolidation (matériaux qui présentent l'effet Portevin-Le Chatelier, par exemple les alliages AlMg), on utilise la détermination automatique (régression linéaire du logarithme de la contrainte vraie en fonction du logarithme de la déformation plastique vraie, voir 8.7) pour obtenir des résultats reproductibles.

Kovinski materiali - Pločevina in trakovi - Ugotavljanje koeficienta utrjevanja (ISO 10275:2020)

General Information

Status
Published
Public Enquiry End Date
23-Jul-2020
Publication Date
09-Nov-2020
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
17-Sep-2020
Due Date
22-Nov-2020
Completion Date
10-Nov-2020

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SLOVENSKI STANDARD
SIST EN ISO 10275:2020
01-december-2020
Nadomešča:
SIST EN ISO 10275:2014

Kovinski materiali - Pločevina in trakovi - Ugotavljanje koeficienta utrjevanja (ISO

10275:2020)

Metallic materials - Sheet and strip - Determination of tensile strain hardening exponent

(ISO 10275:2020)

Metallische Werkstoffe - Blech und Band - Bestimmung des Verfestigungsexponenten im

Zugversuch (ISO 10275:2020)

Matériaux métalliques - Tôles et bandes - Détermination du coefficient d'écrouissage en

traction (ISO 10275:2020)
Ta slovenski standard je istoveten z: EN ISO 10275:2020
ICS:
77.040.10 Mehansko preskušanje kovin Mechanical testing of metals
77.140.50 Ploščati jekleni izdelki in Flat steel products and semi-
polizdelki products
SIST EN ISO 10275:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO 10275:2020
---------------------- Page: 2 ----------------------
SIST EN ISO 10275:2020
EN ISO 10275
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2020
EUROPÄISCHE NORM
ICS 77.040.10 Supersedes EN ISO 10275:2014
English Version
Metallic materials - Sheet and strip - Determination of
tensile strain hardening exponent (ISO 10275:2020)

Matériaux métalliques - Tôles et bandes - Metallische Werkstoffe - Blech und Band - Bestimmung

Détermination du coefficient d'écrouissage en traction des Verfestigungsexponenten im Zugversuch (ISO

(ISO 10275:2020) 10275:2020)
This European Standard was approved by CEN on 28 August 2020.

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

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10275:2020 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 10275:2020
EN ISO 10275:2020 (E)
Contents Page

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

---------------------- Page: 4 ----------------------
SIST EN ISO 10275:2020
EN ISO 10275:2020 (E)
European foreword

This document (EN ISO 10275:2020) has been prepared by Technical Committee ISO/TC 164

"Mechanical testing of metals" in collaboration with Technical Committee CEN/TC 459/SC 1 “Test

methods for steel (other than chemical analysis)” the secretariat of which is held by AFNOR.

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 2021, and conflicting national standards shall

be withdrawn at the latest by March 2021.

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 ISO 10275:2014.

According to the CEN-CENELEC Internal Regulations, the national standards organizations 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.
Endorsement notice

The text of ISO 10275:2020 has been approved by CEN as EN ISO 10275:2020 without any modification.

---------------------- Page: 5 ----------------------
SIST EN ISO 10275:2020
---------------------- Page: 6 ----------------------
SIST EN ISO 10275:2020
INTERNATIONAL ISO
STANDARD 10275
Third edition
2020-08
Metallic materials — Sheet and strip
— Determination of tensile strain
hardening exponent
Matériaux métalliques — Tôles et bandes — Détermination du
coefficient d'écrouissage en traction
Reference number
ISO 10275:2020(E)
ISO 2020
---------------------- Page: 7 ----------------------
SIST EN ISO 10275:2020
ISO 10275:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 10275:2020
ISO 10275:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Symbols and designations .......................................................................................................................................................................... 2

5 Principle ........................................................................................................................................................................................................................ 3

6 Test equipment....................................................................................................................................................................................................... 3

7 Test pieces ................................................................................................................................................................................................................... 3

8 Procedure..................................................................................................................................................................................................................... 3

9 Test report ................................................................................................................................................................................................................... 7

Annex A (informative) International comparison of symbols used in the determination

of the tensile strain hardening exponent .................................................................................................................................... 9

Bibliography .............................................................................................................................................................................................................................10

© ISO 2020 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 10275:2020
ISO 10275:2020(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 164, Mechanical testing of metals,

Subcommittee SC 2, Ductility testing, in collaboration with the European Committee for Standardization

(CEN) Technical Committee CEN/TC 459, ECISS – European Committee for Iron and Steel Standardization,

in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

This third edition cancels and replaces the second edition (ISO 10275:2007), of which it constitutes a

minor revision.
The main changes compared to the previous edition are as follows:
— Clause 2 has been updated;

— new Clause 3 "Terms and definitions" has been added as per the latest Directives, Part 2;

— the symbol for true plastic strain has been changed from ε to ε ;

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 10275:2020
ISO 10275:2020(E)
Introduction

In the previous edition of this document, for the calculation of the true strain, the elastic strain did not

need to be subtracted from the total strain if it was lower than 10 % of the total strain.

In this document, the elastic strain is subtracted from the total strain for calculation of the true strain,

which is now referred to as “true plastic strain”.
© ISO 2020 – All rights reserved v
---------------------- Page: 11 ----------------------
SIST EN ISO 10275:2020
---------------------- Page: 12 ----------------------
SIST EN ISO 10275:2020
INTERNATIONAL STANDARD ISO 10275:2020(E)
Metallic materials — Sheet and strip — Determination of
tensile strain hardening exponent
1 Scope

This document specifies a method for determining the tensile strain hardening exponent n of flat

products (sheet and strip) made of metallic materials.
The method is valid only for that par
...

SLOVENSKI STANDARD
kSIST FprEN ISO 10275:2020
01-julij-2020
Kovinski materiali - Pločevina in trakovi - Ugotavljanje koeficienta utrujanja
(ISO/FDIS 10275:2020)

Metallic materials - Sheet and strip - Determination of tensile strain hardening exponent

(ISO/FDIS 10275:2020)

Metallische Werkstoffe - Blech und Band - Bestimmung des Verfestigungsexponenten im

Zugversuch (ISO/FDIS 10275:2020)

Matériaux métalliques - Tôles et bandes - Détermination du coefficient d'écrouissage en

traction (ISO/FDIS 10275:2020)
Ta slovenski standard je istoveten z: prEN ISO 10275
ICS:
77.040.10 Mehansko preskušanje kovin Mechanical testing of metals
77.140.50 Ploščati jekleni izdelki in Flat steel products and semi-
polizdelki products
kSIST FprEN ISO 10275:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
kSIST FprEN ISO 10275:2020
---------------------- Page: 2 ----------------------
kSIST FprEN ISO 10275:2020
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 10275
ISO/TC 164/SC 2
Metallic materials — Sheet and strip
Secretariat: JISC
— Determination of tensile strain
Voting begins on:
2020­05­04 hardening exponent
Voting terminates on:
Matériaux métalliques — Tôles et bandes — Détermination du
2020­07­27
coefficient d'écrouissage en traction
ISO/CEN PARALLEL PROCESSING
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 SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 10275:2020(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. ISO 2020
---------------------- Page: 3 ----------------------
kSIST FprEN ISO 10275:2020
ISO/FDIS 10275:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH­1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
kSIST FprEN ISO 10275:2020
ISO/FDIS 10275:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Symbols and designations .......................................................................................................................................................................... 2

5 Principle ........................................................................................................................................................................................................................ 3

6 Test equipment....................................................................................................................................................................................................... 3

7 Test pieces ................................................................................................................................................................................................................... 3

8 Procedure..................................................................................................................................................................................................................... 3

9 Test report ................................................................................................................................................................................................................... 7

Annex A (informative) International comparison of symbols used in the determination

of the tensile strain hardening exponent .................................................................................................................................... 9

Bibliography .............................................................................................................................................................................................................................10

© ISO 2020 – All rights reserved iii
---------------------- Page: 5 ----------------------
kSIST FprEN ISO 10275:2020
ISO/FDIS 10275:2020(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non­governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 164, Mechanical testing of metals,

Subcommittee SC 2, Ductility testing, in collaboration with the European Committee for Standardization

(CEN) Technical Committee CEN/TC 459, ECISS – European Committee for Iron and Steel Standardization,

in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

This third edition cancels and replaces the second edition (ISO 10275:2007), of which it constitutes a

minor revision.
The main changes compared to the previous edition are as follows:
— Clause 2 has been updated;

— new Clause 3 "Terms and definitions" has been added as per the latest Directives, Part 2;

— the symbol for true plastic strain has been changed from ε to ε ;

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved
---------------------- Page: 6 ----------------------
kSIST FprEN ISO 10275:2020
ISO/FDIS 10275:2020(E)
Introduction

In the previous edition of this document, for the calculation of the true strain, the elastic strain did not

need to be subtracted from the total strain if it was lower than 10 % of the total strain.

In this document, the elastic strain is subtracted from the total strain for calculation of the true strain,

which is now referred to as “true plastic strain”.
© ISO 2020 – All rights reserved v
---------------------- Page: 7 ----------------------
kSIST FprEN ISO 10275:2020
---------------------- Page: 8 ----------------------
kSIST FprEN ISO 10275:2020
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 10275:2020(E)
Metallic materials — Sheet and strip — Determination of
tensile strain hardening exponent
1 Scope

This document specifies a method for determining the tensile strain hardening exponent n of flat

products (sheet and strip) made of metallic materials.

The method is valid only for that part of the stress-strain curve in the plastic range where the curve is

continuous and monotonic (see 8.4).

In the case of materials with a serrated stress­strain curve in the work hardening range (materials

which show the Portevin-Le Chatelier effect, e.g. AlMg-alloys), the automatic determination (linear

regression of the logarithm true stress vs. the logarithm true plastic strain, see 8.7) is used to give

reproducible results.
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.

ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature

ISO 7500­1, Metallic materials — Calibration and verification of static uniaxial testing machines — Part 1:

Tension/compression testing machines — Calibration and verification of the force-measuring system

ISO 9513, Metallic materials — Calibration of extensometer systems used in uniaxial testing

ISO 10113, Metallic materials — Sheet and strip — Determination of plastic strain ratio

3 Terms and definitions
No terms and definitions are listed in this document.

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 http:// www .electropedia .org/
© ISO 2020 – All rights reserved 1
---------------------- Page: 9 ----------------------
kSIST FprEN ISO 10275:2020
...

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