# ISO 439:1994 — Withdrawn and superseded ISO standards

For ISO 439:1994, item title is Steel and iron — Determination of total silicon content — Gravimetric method; status code is 9599; successor is ISO 439:2020; withdrawn / published date is 1994-03-17, recorded from its source on 2026-08-05.

- **Identifier:** ISO 439:1994 _(verified: appears in the quote below)_
- **Item title:** Steel and iron — Determination of total silicon content — Gravimetric method _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 439:2020
- **Withdrawn / published date:** 1994-03-17 _(verified: appears in the quote below)_

## What the source says

> 4454,IS,,ISO 439:1994,Steel and iron — Determination of total silicon content — Gravimetric method,Aciers et fontes — Dosage du silicium total — Méthode gravimétrique,1994-03-17,2,['77.080.01'],ISO/TC 17/SC 1,9599,"[4452,4453]",[74714],"['en','fr']",6,"<p>The document specifies a gravimetric method for the determination of the total silicon content in steel and iron. The method is apllicable to silicon contents between 0,10 % (m/m) and 5,0 % (m/m). For samples containing molybdenum, niobium, tantalum, titanium, tungsten, zirconium or high levels of chromium, the result are less precise than for unalloyed steels.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).