# ISO/R 503:1966 — Withdrawn and superseded ISO standards

For ISO/R 503:1966, item title is Composition of wrought magnesium-aluminium- zinc alloys; status code is 9599; successor is ISO 3116:1981; withdrawn / published date is 1966-09-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO/R 503:1966 _(verified: appears in the quote below)_
- **Item title:** Composition of wrought magnesium-aluminium- zinc alloys _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 3116:1981
- **Withdrawn / published date:** 1966-09-01 _(verified: appears in the quote below)_

## What the source says

> 4558,R,,ISO/R 503:1966,Composition of wrought magnesium-aluminium- zinc alloys,Composition des alliages de corroyage magnésium-aluminium-zinc,1966-09-01,1,"['77.120.10','77.120.60','77.120.20']",ISO/TC 79/SC 5,9599,,[8273],"['en','fr']",1,

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).