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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Status
Published
Publication Date
23-Aug-2016
Current Stage
9020 - International Standard under periodical review
Start Date
15-Jul-2021
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ISO 16374:2016 - Evaluation method for cleanliness of magnesium and magnesium alloy ingots
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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
---------------------- Page: 1 ----------------------
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

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. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2016 – All rights reserved
---------------------- Page: 2 ----------------------
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
---------------------- Page: 3 ----------------------
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
---------------------- Page: 4 ----------------------
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
---------------------- Page: 1 ----------------------
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

member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Reproduction may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.
ii © ISO 2014 – All rights reserved
---------------------- Page: 2 ----------------------
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.
---------------------- Page: 3 ----------------------
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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