# ISO 5074:1994 — Withdrawn and superseded ISO standards For ISO 5074:1994, item title is Hard coal — Determination of Hardgrove grindability index; status code is 9599; successor is ISO/CD 5074 | ISO 5074:2015; withdrawn / published date is 1994-12-15, recorded from its source on 2026-08-05. - **Identifier:** ISO 5074:1994 _(verified: appears in the quote below)_ - **Item title:** Hard coal — Determination of Hardgrove grindability index _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/CD 5074 | ISO 5074:2015 - **Withdrawn / published date:** 1994-12-15 _(verified: appears in the quote below)_ ## What the source says > 20314,IS,,ISO 5074:1994,Hard coal — Determination of Hardgrove grindability index,Houille — Détermination de l'indice de broyabilité Hardgrove,1994-12-15,2,['73.040'],ISO/TC 27/SC 5,9599,[11097],"[41149,63236]",['en'],9,
Cancels and replaces the first edition (1980). Specifies the method for determining the grindability index of hard coal using the Hardgrove machine. Also specifies the procedure for calibrating the test machine and for preparing the standard reference coal samples.
## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).