# ISO 643:1983 — Withdrawn and superseded ISO standards

For ISO 643:1983, item title is Steels — Micrographic determination of the ferritic or austenitic grain size; status code is 9599; successor is ISO 643:2003; withdrawn / published date is 1983-09-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 643:1983 _(verified: appears in the quote below)_
- **Item title:** Steels — Micrographic determination of the ferritic or austenitic grain size _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 643:2003
- **Withdrawn / published date:** 1983-09-01 _(verified: appears in the quote below)_

## What the source says

> 4773,IS,,ISO 643:1983,Steels — Micrographic determination of the ferritic or austenitic grain size,Aciers — Détermination micrographique de la grosseur du grain ferritique ou austénitique des aciers,1983-09-01,1,['77.040.99'],ISO/TC 17/SC 7,9599,,[30694],"['en','fr']",27,"<p>Specifies the methods for revealing the grain and for estimating the mean size of the grain revealed. Includes a counting method (annex A) and determination of grain size by using of standard charts (annnexes B and C) taken from an AFNOR Standard and an ASTM document, respectively.</p>"

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).