# ISO 12135:2002 — Withdrawn and superseded ISO standards For ISO 12135:2002, item title is Metallic materials — Unified method of test for the determination of quasistatic fracture toughness; status code is 9599; successor is ISO 12135:2016; withdrawn / published date is 2002-12-06, recorded from its source on 2026-08-05. - **Identifier:** ISO 12135:2002 _(verified: appears in the quote below)_ - **Item title:** Metallic materials — Unified method of test for the determination of quasistatic fracture toughness _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 12135:2016 - **Withdrawn / published date:** 2002-12-06 _(verified: appears in the quote below)_ ## What the source says > 35554,IS,,ISO 12135:2002,Metallic materials — Unified method of test for the determination of quasistatic fracture toughness,Matériaux métalliques — Méthode unifiée d'essai pour la détermination de la ténacité quasi statique,2002-12-06,1,['77.040.10'],ISO/TC 164/SC 4,9599,,[60891],"['en','fr']",94,"
International Standard ISO 12135 specifies methods for determining fracture toughness in terms of K, δ, J and R-curves for homogeneous metallic materials subjected to quasistatic loading. Specimens are notched, precracked by fatigue and tested under slowly increasing displacement.
" ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).