ISO/DIS 23700

DRAFT INTERNATIONAL STANDARD
ISO/DIS 23700
ISO/TC 79/SC 5 Secretariat: SAC
Voting begins on: Voting terminates on:
2020-06-22 2020-09-14
Wrought magnesium and magnesium alloys — Rolled
plates and sheets
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,
This document is circulated as received from the committee secretariat.
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 23700:2020(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 2020
---------------------- Page: 1 ----------------------
ISO/DIS 23700:2020(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

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

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

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

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

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

4 Orders or tenders ................................................................................................................................................................................................ 2

5 Requirements .......................................................................................................................................................................................................... 2

5.1 Designation ................................................................................................................................................................................................ 2

5.2 Production and manufacturing processes ...................................................................................................................... 3

5.3 Quality control ......................................................................................................................................................................................... 3

5.4 Chemical composition ...................................................................................................................................................................... 3

5.5 Dimensional tolerances ................................................................................................................................................................... 5

5.6 Mechanical properties ...................................................................................................................................................................... 5

5.7 Surface finish ............................................................................................................................................................................................ 9

6 Test procedure ........................................................................................................................................................................................................ 9

6.1 Sampling ....................................................................................................................................................................................................... 9

6.1.1 Sampling for chemical analysis ........................................................................................................................... 9

6.1.2 Sampling for mechanical testing ........................................................................................................................ 9

6.2 Test methods ..........................................................................................................................................................................................10

6.2.1 Chemical composition ..............................................................................................................................................10

6.2.2 Tensile test .........................................................................................................................................................................10

6.2.3 Erishen test ........................................................................................................................................................................10

6.2.4 Measurement of dimensions ..............................................................................................................................10

6.2.5 Surface finish ....................................................................................................................................................................10

6.3 Retests .........................................................................................................................................................................................................11

6.3.1 Mechanical properties .............................................................................................................................................11

6.3.2 Other properties ............................................................................................................................................................11

7 Inspection documents ..................................................................................................................................................................................11

7.1 General ........................................................................................................................................................................................................11

7.2 Certificat e of conformity ..............................................................................................................................................................11

7.3 Test report ................................................................................................................................................................................................11

7.4 Specific test report ............................................................................................................................................................................11

8 Marking .......................................................................................................................................................................................................................12

9 Packing.........................................................................................................................................................................................................................12

10 Transportation and storage ...................................................................................................................................................................12

11 Arbitration tests .................................................................................................................................................................................................12

Bibliography .............................................................................................................................................................................................................................13

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

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

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

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/

This document was prepared by Technical Committee ISO/TC 79, Light metals and their alloys,

This edition specifies chemical composition, mechanical properties, dimension and shape tolerance,

and the technical conditions for inspection and delivery of wrought magnesium and magnesium alloy

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

This document classifies the commercially available magnesium and magnesium alloy rolled plates and

sheets into a number of grades suitable for the application to which they might be put.

Some of the alloys referenced in this document can be the subject of a patent or of patent applications and

their listing herein is not to be construed in any way as the granting of a licence under such patent rights.

This International Standard specifies chemical composition, mechanical properties, dimension and

shape tolerance, heat treatment and the technical conditions for inspection and delivery of rolled

The following referenced documents 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

ISO 3116, Magnesium and magnesium alloys — Wrought magnesium and magnesium alloys

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

Product that is rectangular in cross-section with nominal thickness less than 6mm, but not less than

Product that is rectangular in cross-section and with thickness not less than 6 mm with sheared or

— H112: strain hardened from working at elevated temperature or from a limited amount of cold

— H × 4: half hardened (stain hardened to give an ultimate tensile strength approximately midway

— H × 2: quarter hardened (stain hardened to give an ultimate tensile strength approximately midway

— T5: cooled from an elevated temperature shaping process and then artificially aged.

The order or tender shall define the product required and shall contain the following details:

b) metallurgical temper (degree of hardness or heat treatment condition) of the material for delivery

c) number of ISO 23700 or specification number, or, where none exists, properties agreed between

d) dimensions and shape of the product (thickness, width, length, diameter of the coil);

e) tolerances of the dimensions and form, with reference to the appropriate part of ISO 23700;

h) any special requirements agreed between the supplier and the purchaser (for example drawings).

Unless otherwise specified in the order, the production and manufacturing processes shall be left to

the discretion of the producer. Unless it is explicitly stated otherwise in the order, no obligation shall be

placed on the producer to use the same processes for subsequent and similar orders.

The supplier shall be responsible for the performances of all inspection and tests required by the

relevant International Standard or specification, prior to shipment of the product. If the purchaser

wishes to inspect the product at the supplier's works, he shall notify the supplier at the time of placing

The chemical composition shall conform to the requirements for the appropriate material given in Table

If the purchaser requires content limits for elements not specified in Table 2 nor in ISO 3116, these