ISO 16374:2016
(Main)Evaluation method for cleanliness of magnesium and magnesium alloy ingots
Evaluation method for cleanliness of magnesium and magnesium alloy ingots
ISO 16374:2016 describes a method to evaluate the cleanliness and the quality of magnesium and magnesium alloys ingots. The method includes naked eye inspection, the composition analysis and a brightness evaluation procedure based on an ISO standard.
Méthode d'évaluation de la propreté des lingots en magnésium et en alliages de magnésium
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INTERNATIONAL ISO
STANDARD 16374
First edition
2016-09-01
Evaluation method for cleanliness
of magnesium and magnesium alloy
ingots
Méthode d’évaluation de la propreté des lingots en magnésium et en
alliages de magnésium
Reference number
ISO 16374:2016(E)
©
ISO 2016
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ISO 16374:2016(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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ii © ISO 2016 – All rights reserved
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ISO 16374:2016(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Naked eye inspection . 1
5 Chemical composition analysis . 1
6 Brightness evaluation . 2
6.1 Principle of brightness evaluation . 2
6.2 Specimen preparation . 2
6.3 Shape of jig. 3
6.4 Brightness evaluation of the fracture surface . 4
6.5 Others . 5
7 Test report . 5
Bibliography . 6
© ISO 2016 – All rights reserved iii
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ISO 16374:2016(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 World Trade Organization (WTO) principles in the
Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.
The committee responsible for this document is ISO/TC 79, Light metals and their alloys, Subcommittee
SC 5, Magnesium and alloys of cast or wrought magnesium.
iv © ISO 2016 – All rights reserved
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INTERNATIONAL STANDARD ISO 16374:2016(E)
Evaluation method for cleanliness of magnesium and
magnesium alloy ingots
1 Scope
This document describes a method to evaluate the cleanliness and the quality of magnesium and
magnesium alloys ingots.
The method includes naked eye inspection, the composition analysis and a brightness evaluation
procedure based on an ISO standard.
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 2470-1, Paper, board and pulps — Measurement of diffuse blue reflectance factor —
...
DRAFT INTERNATIONAL STANDARD
ISO/DIS 16374
ISO/TC 79/SC 5 Secretariat: SAC
Voting begins on: Voting terminates on:
2014-03-17 2014-06-17
Evaluation method for cleanness of magnesium and
magnesium alloy ingots
Méthode d’évaluation de la propreté du magnésium et des lingots en magnésium allié
ICS: 77.120.20
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 16374:2014(E)
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. ISO 2014
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ISO/DIS 16374:2014(E)
Copyright notice
This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as
permitted under the applicable laws of the user’s country, neither this ISO draft nor any extract
from it may be reproduced, stored in a retrieval system or transmitted in any form or by any means,
electronic, photocopying, recording or otherwise, without prior written permission being secured.
Requests for permission to reproduce should be addressed to either ISO at the address below or ISO’s
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Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
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Reproduction may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.
ii © ISO 2014 – All rights reserved
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ISO/TC 79/SC 5/DIS 16374
Evaluation method for cleanness of magnesium and magnesium alloy ingots
1. Scope and field of application
This international standard describes a method to evaluate the quality of magnesium ingots
that are required by industries due to their expanded applications. This standard describes
specifications to evaluate the cleanliness and the quality of primary ingots of important
magnesium alloys including Mg-3Al-1Zn, Mg-5Al-0.5Mn, Mg-6Al-0.5Mn, and Mg-9Al-1Zn
alloys, using the naked eye inspection, the composition analysis and an ISO brightness
measurement method established by the international Organization for Standardization.
2. Normative references
The following references are indispensable for the application 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 8287 : Magnesium and magnesium alloys -- Unalloyed magnesium -- Chemical
composition
ISO 16220 : Magnesium and magnesium alloys -- Magnesium alloy ingots and castings
ISO 3116 : Magnesium and magnesium alloys -- Wrought magnesium alloys
ISO 2469 : Paper, board and pulps -- Measurement of diffuse radiance factor
ISO 2470-1 : Paper, board and pulps -- Measurement of diffuse blue reflectance factor --
Part 1: Indoor daylight conditions (ISO brightness) transmitting objects -
ISO 7724 : Paints and Varnishes - colorimetry part Ⅰ : principle CIE No. 15
ASTM E 1164 : Standard practice for obtaining spectrophotometric data for object - color
Evaluation
3. Naked Eye Inspection
Identify any presence of significant contraction or impurities on the surface of magnesium
ingots. The decision on the quality of ingots by naked eye inspection follows to an agreement
between the supplier and the purchaser.
4. Chemical Composition Analysis
Analyze the content of alloying elements of ingots. The chemical composition evaluation
method can be freely chosen under an agreement between the supplier and the purchaser.
However, the test method should be specified in the final report. The standard for the
chemical composition follows specifications of ISO 8287, ISO 16220 and ISO 3116. The
range of the composition of unspecified alloys or alloying elements can be determined by an
agreement between the supplier and the purchaser.
1
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ISO/DIS 16374:2014(E)
5. ISO Brightness Measurement
5.1 Principle of Brightness Measurement
The principle of the brightness measurement in this standard follows the specification in ISO
2470. Diffused light beams from a standard testing machine are shed on a specimen. Beams
...
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