# ISO 4491-4:1989 — Withdrawn and superseded ISO standards

For ISO 4491-4:1989, item title is Metallic powders — Determination of oxygen content by reduction methods — Part 4: Total oxygen by reduction-extraction; status code is 9599; successor is ISO 4491-4:2013; withdrawn / published date is 1989-09-28, recorded from its source on 2026-08-05.

- **Identifier:** ISO 4491-4:1989 _(verified: appears in the quote below)_
- **Item title:** Metallic powders — Determination of oxygen content by reduction methods — Part 4: Total oxygen by reduction-extraction _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 4491-4:2013
- **Withdrawn / published date:** 1989-09-28 _(verified: appears in the quote below)_

## What the source says

> 10387,IS,,ISO 4491-4:1989,Metallic powders — Determination of oxygen content by reduction methods — Part 4: Total oxygen by reduction-extraction,Poudres métalliques — Dosage de l'oxygène par les méthodes de réduction — Partie 4: Oxygène total par réduction-extraction,1989-09-28,1,['77.160'],ISO/TC 119/SC 2,9599,,[61879],"['en','fr']",4,"<p>The test method is applicable to all powders of metals, alloys, carbides and mixtures thereof which are non-volatile under the test conditions. The sample may be in powder or compact form. The test is not applicable if the powder contains a lubricant or binder. This part of ISO 4491 shall be read in conjunction with ISO 4491-1.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).