# ISO 4498-2:1981 — Withdrawn and superseded ISO standards For ISO 4498-2:1981, item title is Sintered metal materials, excluding hardmetals — Determination of apparent hardness — Part 2: Case-hardened ferrous materials, surface enriched by carbon or carbon and nitrogen; status code is 9599; successor is ISO/DIS 4498 | ISO 4498:2005; withdrawn / published date is 1981-12-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 4498-2:1981 _(verified: appears in the quote below)_ - **Item title:** Sintered metal materials, excluding hardmetals — Determination of apparent hardness — Part 2: Case-hardened ferrous materials, surface enriched by carbon or carbon and nitrogen _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/DIS 4498 | ISO 4498:2005 - **Withdrawn / published date:** 1981-12-01 _(verified: appears in the quote below)_ ## What the source says > 10396,IS,,ISO 4498-2:1981,"Sintered metal materials, excluding hardmetals — Determination of apparent hardness — Part 2: Case-hardened ferrous materials, surface enriched by carbon or carbon and nitrogen",Matériaux métalliques frittés à l'exclusion des métaux-durs — Détermination de la dureté apparente — Partie 2: Matériaux ferreux durcis en surface par enrichissement superficiel en carbone ou carbone et azote,1981-12-01,1,"['77.160','77.040.10']",ISO/TC 119/SC 3,9599,,"[25003,39961]","['en','fr']",2,"

Applies to sintered materials which have been heat treated in such a way that hardness is not uniform in the section to a depth of 5 mm below the surface (by treatments such as carburizing, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).