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
Published
Publication Date
05-Nov-2015
Current Stage
9060 - Close of review
Start Date
05-Mar-2021
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ISO 11531:2015 - Metallic materials -- Sheet and strip -- Earing test
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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

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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
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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
R Corner radius of punch mm
d Inside diameter of die mm
R Inside corner radius of die mm
d Diameter of circular blank mm
h Distance between outside bottom of cup and any ear mm
peak
h Distance between outside bottom of cup and any ear mm
valley
h Maximum value of h mm
t,max t
h Minimum value of h mm
v,min v
Mean value of h mm
h
Mean value of h mm
h v
Mean ear height mm
h
h Maximum ear height mm
e,max
N Number of ear peaks —
ear peaks
N Number of ear v
...

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