ISO 11531:2015

Metallic materials — Sheet and strip — Earing test

ISO 11531:2015 specifies a method for determining the ear height of metal sheet and strip of nominal thickness from 0,1 mm to 3 mm after deep drawing.

Matériaux métalliques — Tôles et bandes — Essai de corne

General Information

• Status: Withdrawn
• Publication Date: 05-Nov-2015
• ICS: 77.040.10 - Mechanical testing of metals
• Technical Committee: ISO/TC 164/SC 2 - Ductility testing
• Drafting Committee: ISO/TC 164/SC 2 - Ductility testing
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 30-Sep-2022

Relations

• Revises: ISO 11531:1994 - Metallic materials — Earing test
• Effective Date: 27-Oct-2012
• Revised: ISO 11531:2022 - Metallic materials — Sheet and strip — Earing test
• Effective Date: 06-Jun-2022

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 11531
Second edition
2015-11-01
Metallic materials — Sheet and strip
— Earing test
Matériaux métalliques — Tôles et bandes — Essai de corne
Reference number
ISO 11531:2015(E)
©
ISO 2015

---------------------- Page: 1 ----------------------
ISO 11531:2015(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2015 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 11531:2015(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Symbols and their meanings . 1
3 Principle . 2
4 Test equipment. 3
5 Test piece . 3
6 Procedure. 4
7 Interpretation of results . 5
8 Test report . 5
© ISO 2015 – All rights reserved iii

---------------------- Page: 3 ----------------------
ISO 11531:2015(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 on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 164, Mechanical testing of metals, Subcommittee
SC 2, Ductility testing.
This second edition cancels and replaces the first edition (ISO 11531:1994), of which it constitutes a
minor revision.
iv © ISO 2015 – All rights reserved

---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 11531:2015(E)
Metallic materials — Sheet and strip — Earing test
1 Scope
This International Standard specifies a method for determining the ear height of metal sheet and strip
of nominal thickness from 0,1 mm to 3 mm after deep drawing.
2 Symbols and their meanings
The meanings of the symbols used in the earing test are given in Table 1 and illustrated in Figures 1 and 2.
Table 1 — Symbols
   Symbol   Meaning   Units
     a Thickness of test piece    mm
     d Diameter of punch    mm
1
     R Corner radius of punch    mm
1
     d Inside diameter of die   mm
2
    R Inside corner radius of die   mm
2
    d Diameter of circular blank   mm
b
     h Distance between outside bottom of cup and any ear    mm
t
peak
     h Distance between outside bottom of cup and any ear    mm
v
valley
     h Maximum value of h   mm
t,max t
     h Minimum value of h   mm
v,min v
Mean value of h   mm
t
     h
t
Mean value of h   mm
     h v
v
Mean ear height   mm
     h
e
     h Maximum ear height   mm
e,max
     N Number of ear peaks   —
ear peaks
     N Number of ear v
...