# ISO 4698:1994 — Withdrawn and superseded ISO standards For ISO 4698:1994, item title is Iron ore pellets — Determination of relative free-swelling index; status code is 9599; successor is ISO 4698:2007; withdrawn / published date is 1994-01-27, recorded from its source on 2026-08-05. - **Identifier:** ISO 4698:1994 _(verified: appears in the quote below)_ - **Item title:** Iron ore pellets — Determination of relative free-swelling index _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 4698:2007 - **Withdrawn / published date:** 1994-01-27 _(verified: appears in the quote below)_ ## What the source says > 10680,IS,,ISO 4698:1994,Iron ore pellets — Determination of relative free-swelling index,Boulettes de minerais de fer — Détermination de l'indice relatif de gonflement libre,1994-01-27,1,['73.060.10'],ISO/TC 102/SC 3,9599,,[38076],"['en','fr']",13,"
The principle of the method specified is determination of swelling of fired iron ore pellets of a specified size range under isothermal reduction, determination of the volume of pellets before and after reduction at a temperature of 900 °C, using a reducing gas consisting of carbon monoxide and nitrogen, calculation of the free-swelling index, expressed as a percentage, using the difference between the two volumes.
" ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).