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IS0
I NT ERN AT I ON AL ORGAN IZATl O N FOR STAN DA RD IZATl ON
IS0 RECOMMENDATION
R 503
COMPOSITION OF WROUGHT
MAGNESIUM-ALUMINIUM-ZINC ALLOYS
1st EDITION
September 1966
COPYRIGHT RESERVED
The copyright of IS0 Recommendations and IS0 Standards
belongs to IS0 Member Bodies. Reproduction of these
documents, in any country, may be authorized therefore only
by the national standards organization of that country, being
a member of ISO.
For each individual country the only valid standard is the national standard of that country.
Printed in Switzerland
Also issued in French and Russian. Copies to be obtained through the national standards organizations.
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BRIEF HISTORY
The IS0 Recommendation R 503, Composition of Wrought Magnesium-Aluminium- Zinc
Alloys, was drawn up by Technical Committee ISO/TC 79, Light Metals and their Alloys, the
Secretariat of which is held by the Association Française de Normalisation (AFNOR).
Work on this question by the Technical Committee began in 1959 and led, in 1963, to
the adoption of a Draft IS0 Recommendation.
In October 1964, this Draft IS0 Recommendation (No. 760) was circulated to all the
IS0 Member Bodies for enquiry. It was approved, subject to a few modifications of an editorial
nature, by the following Member Bodies:
Austria Israel Switzerland
Belgium Italy Turkey
Brazil Japan U.A.R.
Korea, Rep. of United Kingdom
Canada
Czechoslovakia Norway U
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