# ISO 9809-4:2021 — Withdrawn and superseded ISO standards

For ISO 9809-4:2021, item title is Gas cylinders — Design, construction and testing of refillable seamless steel gas cylinders and tubes — Part 4: Stainless steel cylinders with an R m value of less than 1 100 MPa; status code is 9599; successor is ISO 9809-4:2026; withdrawn / published date is 2021-11-03, recorded from its source on 2026-08-05.

- **Identifier:** ISO 9809-4:2021 _(verified: appears in the quote below)_
- **Item title:** Gas cylinders — Design, construction and testing of refillable seamless steel gas cylinders and tubes — Part 4: Stainless steel cylinders with an R m value of less than 1 100 MPa _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 9809-4:2026
- **Withdrawn / published date:** 2021-11-03 _(verified: appears in the quote below)_

## What the source says

> 76548,IS,,ISO 9809-4:2021,"Gas cylinders — Design, construction and testing of refillable seamless steel gas cylinders and tubes — Part 4: Stainless steel cylinders with an R m value of less than 1 100 MPa","Bouteilles à gaz — Conception, construction et essais des bouteilles à gaz et des tubes rechargeables en acier sans soudure — Partie 4: Bouteilles en acier inoxydable ayant une valeur de Rm inférieure à 1 100 MPa",2021-11-03,2,['23.020.35'],ISO/TC 58/SC 3,9599,[59839],[87936],"['en','fr']",54,"<p>This document specifies the minimum requirements for the materials, design, construction and workmanship, manufacturing processes, examinations and testing at time of manufacture for refillable,

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).