# ISO 674:1988 — Withdrawn and superseded ISO standards

For ISO 674:1988, item title is Metallic materials — Hardness test — Calibration of standardized blocks to be used for Rockwell hardness testing machines (scales A - B - C - D - E - F - G - H - K); status code is 9599; successor is ISO 6508-3:1999; withdrawn / published date is 1988-12-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 674:1988 _(verified: appears in the quote below)_
- **Item title:** Metallic materials — Hardness test — Calibration of standardized blocks to be used for Rockwell hardness testing machines (scales A - B - C - D - E - F - G - H - K) _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 6508-3:1999
- **Withdrawn / published date:** 1988-12-01 _(verified: appears in the quote below)_

## What the source says

> 4840,IS,,ISO 674:1988,Metallic materials — Hardness test — Calibration of standardized blocks to be used for Rockwell hardness testing machines (scales A - B - C - D - E - F - G - H - K),Matériaux métalliques — Essai de dureté — Étalonnage des blocs de référence à utiliser pour les machines d'essai de dureté Rockwell (échelles A - B - C - D - E - F - G - H - K),1988-12-01,1,['77.040.10'],ISO/TC 164/SC 3,9599,,[26049],"['en','fr']",3,

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).