ISO/PRF 23694

DRAFT INTERNATIONAL STANDARD
ISO/DIS 23694
ISO/TC 79/SC 5 Secretariat: SAC
Voting begins on: Voting terminates on:
2020-06-18 2020-09-10
Wrought magnesium and magnesium alloys — Extruded
rods/bars and tubes
ICS: 77.150.01
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 23694:2020(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 23694:2020(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

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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 et definitions .......................................................................................................................................................................................... 1

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

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

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

5.2 Production et manufacturing processes ........................................................................................................................... 3

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

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

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

5.5.1 The dimensions et tolerances for extruded round, square et hexagonal bars ........... 5

5.5.2 The dimensions et tolerances for extruded tubes .............................................................................. 7

5.6 Mechanical properties ...................................................................................................................................................................... 9

5.7 Surface finish .........................................................................................................................................................................................10

6 Test procedure .....................................................................................................................................................................................................10

6.1 Sampling ....................................................................................................................................................................................................10

6.1.1 Specimens for chemical analysis .....................................................................................................................10

6.1.2 Specimens for mechanical testing .................................................................................................................10

6.1.3 Test pieces for tensile test .....................................................................................................................................11

6.2 Test methods ..........................................................................................................................................................................................12

6.2.1 Chemical composition ..............................................................................................................................................12

6.2.2 Tensile test .........................................................................................................................................................................12

6.2.3 Surface finish ....................................................................................................................................................................12

6.2.4 Measurement of dimensions ..............................................................................................................................12

6.2.5 Additional tests ..............................................................................................................................................................12

6.3 Retests .........................................................................................................................................................................................................12

6.3.1 Mechanical properties .............................................................................................................................................12

6.3.2 Other properties ............................................................................................................................................................13

6.4 Test report ................................................................................................................................................................................................13

7 Marking .......................................................................................................................................................................................................................13

8 Packing.........................................................................................................................................................................................................................13

9 Transportation et storage ........................................................................................................................................................................14

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

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 et magnesium alloy extruded rods/

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

This international standard gives specifies the technical conditions for inspection et delivery of

wrought magnesium et magnesium alloy rods/bars et tubes for general engineering applications.

It applies to wrought magnesium et magnesium alloy extruded round, square et hexagonal rods/bars et

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 3116:2019, Magnésium et alliages de magnésium — Magnésium et alliages de magnésium corroyés

ISO 6892-1, Matériaux métalliques — Essai de traction — Partie 1: Méthode d'essai à température ambiante

Solid wrought product of uniform cross-section along its whole length, supplied in straight lengths.

Note 1 to entry: The cross-sections are in the shape of circles, squares, rectangles or regular hexagons. Products

with a square, rectangular or hexagonal cross-section may have corners rounded along their whole length.

Note 2 to entry: Rod is normally less than 6 mm in diameter or minor dimension. In North America, the minimum

diameter of a rod is 9,525 mm (0,375 in). Below this limit the product is called wire.

Note 3 to entry: For rectangular bars, the thickness exceeds one-tenth of the width. The term “rectangular bar”

includes “flattened circles” et “modified rectangles”, of which two opposite sides are convex arcs, the other two

hollow wrought product of uniform cross-section with only one enclosed void along its whole length, et

with a uniform wall thickness, supplied in straight lengths or in coiled form, provided the inner et outer

Note 1 to entry: The cross-sections are in the shape of circles, squares, rectangles or regular hexagons. Hollow

products with square, rectangular or regular hexagonal cross-sections may have corners rounded along their

either a quantity of molten metal, product or products which are used for the production of specimens.

one or more pieces taken from each product in the sample, for the purpose of producing test pieces.

operation to which the test piece is subjected in order to measure or classify properties.

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

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

c) the number of ISO 23694 or specification number, or, where none exists, properties agreed between

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

e) tolerances of the dimensions et form, with reference to the appropriate part of ISO 23694;

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

The alloy designation et temper shall be given in Table 1. If there is any alloy not specified in Table 1,

the alloy designation et temper shall be in conformity with those specified in ISO 3116:2019 or those

Unless otherwise specified in the order, the production et 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 et similar orders.

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

International Standard, specification or customer requests, 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

The chemical composition of ISO-MgAl4Zn, ISO-MgMn2(A), ISO-MgZn6Zr(A), ISO-MgGd9Y2Nd1Zr, ISO-

MgGd8Y2ZrAgEr et ISO-MgGd9Y4Zn1Zr shall comply with the requirements specified in Table 2,others