# ISO 8994:1989 — Withdrawn and superseded ISO standards For ISO 8994:1989, item title is Anodized aluminium and aluminium alloys — Rating system for the evaluation of pitting corrosion — Grid method; status code is 9599; successor is ISO 8994:2011; withdrawn / published date is 1989-04-13, recorded from its source on 2026-08-05. - **Identifier:** ISO 8994:1989 _(verified: appears in the quote below)_ - **Item title:** Anodized aluminium and aluminium alloys — Rating system for the evaluation of pitting corrosion — Grid method _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 8994:2011 - **Withdrawn / published date:** 1989-04-13 _(verified: appears in the quote below)_ ## What the source says > 16523,IS,,ISO 8994:1989,Anodized aluminium and aluminium alloys — Rating system for the evaluation of pitting corrosion — Grid method,Aluminium et alliages d'aluminium anodisés — Système de cotation de la corrosion par piqûres — Méthode par quadrillage,1989-04-13,1,"['25.220.20','77.060']",ISO/TC 79/SC 2,9599,,[51497],"['en','fr']",2,"

Defines levels of performance of anodic oxide coatings that have been subjected to corrosion tests. The rating system is applicable to pitting corrosion of the basis metal resulting from accelerated tests, exposure to corrosive environments and practical service tests. It is frequently used for rating the results of short term corrosion tests on relatively t ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).