# ISO 13520:2002 — Withdrawn and superseded ISO standards For ISO 13520:2002, item title is Determination of ferrite content in austenitic stainless steel castings; status code is 9599; successor is ISO 13520:2015; withdrawn / published date is 2002-10-03, recorded from its source on 2026-08-05. - **Identifier:** ISO 13520:2002 _(verified: appears in the quote below)_ - **Item title:** Determination of ferrite content in austenitic stainless steel castings _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 13520:2015 - **Withdrawn / published date:** 2002-10-03 _(verified: appears in the quote below)_ ## What the source says > 20837,IS,,ISO 13520:2002,Determination of ferrite content in austenitic stainless steel castings,Détermination de la teneur en ferrite dans les pièces moulées en acier inoxydable austénitique,2002-10-03,1,['77.140.80'],ISO/TC 17/SC 11,9599,,[59273],"['en','fr']",9,"

In ISO 13520 procedures are covered for estimating ferrite content in certain grades of austenitic iron-chromium-nickel alloy castings that have compositions balanced to create the formation of ferrite as a second phase in amounts controlled within specified limits. Methods are described for estimating ferrite content by chemical, magnetic and metallographic means.

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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).