# ISO 5940:1981 — Withdrawn and superseded ISO standards

For ISO 5940:1981, item title is Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of softening point by the ring-and-ball method; status code is 9599; successor is ISO 5940-1:2019; withdrawn / published date is 1981-05-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 5940:1981 _(verified: appears in the quote below)_
- **Item title:** Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of softening point by the ring-and-ball method _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 5940-1:2019
- **Withdrawn / published date:** 1981-05-01 _(verified: appears in the quote below)_

## What the source says

> 12134,IS,,ISO 5940:1981,Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of softening point by the ring-and-ball method,Produits carbonés utilisés pour la production de l'aluminium — Brai pour électrodes — Détermination du point de ramollissement par la méthode bille et anneau,1981-05-01,1,['71.100.10'],ISO/TC 226,9599,,[73941],"['en','fr']",5,"<p>Specifies a method using a disc-shped test piece to be prepared by moulding a test portion ina ring which is fitted into a heated bath. A steel ball is placed on the upper surface of the test piece. Then the temperature (softening temperature) is determined at which the test piece, on heating at a prescr

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).