ISO/DIS 23700

Wrought magnesium and magnesium alloys -- Rolled plates and sheets

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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
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ISO/DIS 23700:2020(E)
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© ISO 2020

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ii © ISO 2020 – All rights reserved
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ISO/DIS 23700:2020(E)
Contents Page

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 2020 – All rights reserved iii
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ISO/DIS 23700:2020(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 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/

iso/ foreword .html.

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

Subcommittee SC 5, Magnesium and alloys of cast or wrought magnesium.

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

plates and sheets.

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

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved
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ISO/DIS 23700:2020(E)
Introduction

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.

© ISO 2020 – All rights reserved v
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DRAFT INTERNATIONAL STANDARD ISO/DIS 23700:2020(E)
Wrought magnesium and magnesium alloys — Rolled
plates and sheets
1 Scope

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

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

magnesium and magesium alloy plates and sheets.
It applies to rolled magnesium and magnesium alloy plates and sheets.
2 Normative references

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

documents (including any amendments) applies.

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

3 Terms and definitions
3.1
Sheet

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

0.20mm, and with slit, sheared or sawed edges.
3.2
Plate

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

sawn edges.
3.3
Tempers
The following symbols shall be used for temper designation:
— O: annealed;

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

work, and for which there are mechanical properties limits;

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

between that of annealed and H × 8 temper);

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

between that of annealed and H × 4 temper);

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

© ISO 2020 – All rights reserved 1
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ISO/DIS 23700:2020(E)
4 Orders or tenders

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

a) type and form of product:
— designation of the magnesium or magnesium alloy;
— form of the product (sheet, plate);

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

and, if different, metallurgical temper for use;

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

the supplier and the purchaser;

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;

f) quantity;
g) any requirements for certificates of conformity, test and/or analysis;

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

5 Requirements
5.1 Designation
The alloy designation and temper should be given in Table 1.
Table 1 — Alloy designation and temper
Alloy designation Alloy symbol Temper Thickness (mm)
MAM61 ISO-MgAl6Mn1 H112 1≤t≤5
MAM91 ISO-MgAl9Mn1 H112 1≤t≤5
MAT11 ISO-MgAl1Sn1 O 0.5≤t≤2
MAT61 ISO-MgAl6Sn1 O 0.5≤t≤2
MAZ31a ISO-MgAl3Zn1(A) O, H × 4, H × 2 0.5≤t≤25
MAZ31b ISO-MgAl3Zn1(B) O, H112 0.4≤t≤70
MAZ40 ISO-MgAl4Zn H112 40≤t≤70
MAZ41 ISO-MgAl4Zn1 H112 10≤t≤70
MAZX310 ISO-MgAl3Zn1Ca O 0.5≤t≤1.5
MAZE310 ISO-MgAl3Zn1RE O 0.5≤t≤1.5
MVWE751 ISO-MgGd7Y5RE1 T5 10≤t≤20
MVW76 ISO-MgGd7Y6 T5 12≤t≤70
MLAZ931 ISO-MgLi9Al3Zn1 O, H112 0.5≤t≤60
MME20 ISO-MgMn2RE H112 10≤t≤70
MWE43c ISO-MgY4RE3Zr(C) T5 12≤t≤70
MWEK711 ISO-MgY7RE1Zr1 T5 10≤t≤20
MZE10 ISO-MgZn1RE O 0.5≤t≤1.5
MZE20 ISO-MgZn2RE O 0.5≤t≤1.5
MZM21 ISO-MgZn2Mn1 O, H × 4 6≤t≤25
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ISO/DIS 23700:2020(E)
Table 1 (continued)
Alloy designation Alloy symbol Temper Thickness (mm)
MZK60 ISO-MgZn6Zr0 H112 20≤t≤60
MZK61 ISO-MgZn6Zr1 T5, H112 10≤t≤70
5.2 Production and manufacturing processes

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.

5.3 Quality control

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 order.
5.4 Chemical composition

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

2, or comply with the requirements specified in ISO 3116.

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

limits shall be stated i
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