# ISO/TS 4949:2003 — Withdrawn and superseded ISO standards For ISO/TS 4949:2003, item title is Steel names based on letter symbols; status code is 9599; successor is ISO/TS 4949:2016; withdrawn / published date is 2003-06-17, recorded from its source on 2026-08-05. - **Identifier:** ISO/TS 4949:2003 _(verified: appears in the quote below)_ - **Item title:** Steel names based on letter symbols _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/TS 4949:2016 - **Withdrawn / published date:** 2003-06-17 _(verified: appears in the quote below)_ ## What the source says > 37676,TS,,ISO/TS 4949:2003,Steel names based on letter symbols,Désignations des aciers fondées sur des lettres symboles,2003-06-17,1,['77.080.20'],ISO/TC 17,9599,[10965],[67751],"['en','fr']",8,"
ISO/TS 4949:2003 sets out rules for the designation of internationally standardized steel grades by means of symbolic letters and numbers to express application and principal characteristics (e.g. mechanical, physical, chemical) so as to provide an abbreviated identification of steel grades.
" ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).