# ISO 4496:1978 — Withdrawn and superseded ISO standards

For ISO 4496:1978, item title is Metallic powders — Determination of acid insoluble content in iron, copper, tin and bronze powders; status code is 9599; successor is ISO/WD 4496 | ISO 4496:2017; withdrawn / published date is 1978-08-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 4496:1978 _(verified: appears in the quote below)_
- **Item title:** Metallic powders — Determination of acid insoluble content in iron, copper, tin and bronze powders _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/WD 4496 | ISO 4496:2017
- **Withdrawn / published date:** 1978-08-01 _(verified: appears in the quote below)_

## What the source says

> 10392,IS,,ISO 4496:1978,"Metallic powders — Determination of acid insoluble content in iron, copper, tin and bronze powders","Poudres métalliques — Détermination de la teneur en insolubles dans les acides pour les poudres de fer, de cuivre, d'étain et de bronze",1978-08-01,1,['77.160'],ISO/TC 119/SC 2,9599,,"[34926,69210]","['en','fr']",3,"<p>The insoluble matter is generally considered to be acid-insoluble silica and silicates, carbides, alumina, and clays. The methods are applicable to lubricant-free powders. ISO 4496 specifies apparatus and reagents, sampling, procedure, expression of results and test report.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).