# ISO 6621-3:2000 — Withdrawn and superseded ISO standards

For ISO 6621-3:2000, item title is Internal combustion engines — Piston rings — Part 3: Material specifications; status code is 9599; successor is ISO 6621-3:2021; withdrawn / published date is 2000-08-31, recorded from its source on 2026-08-05.

- **Identifier:** ISO 6621-3:2000 _(verified: appears in the quote below)_
- **Item title:** Internal combustion engines — Piston rings — Part 3: Material specifications _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 6621-3:2021
- **Withdrawn / published date:** 2000-08-31 _(verified: appears in the quote below)_

## What the source says

> 26893,IS,,ISO 6621-3:2000,Internal combustion engines — Piston rings — Part 3: Material specifications,Moteurs à combustion interne — Segments de piston — Partie 3: Spécifications des matériaux,2000-08-31,2,['43.060.10'],ISO/TC 22/SC 34,9599,[13035],[75122],"['en','fr']",3,"<p>This part of ISO 6621 classifies materials intended for the manufacture of piston rings, based on their mechanical</p><p>properties and the stresses the materials are capable of withstanding.</p><p>This part of ISO 6621 is applicable to piston rings for reciprocating internal combustion engines up to and including</p><p>those of 200 mm in diameter. It is also applicable to piston rings of compressors working under simi

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).