ISO 8994:2011

Anodizing of aluminium and its alloys — Rating system for the evaluation of pitting corrosion — Grid method ISO 8994:2011

Publication date:   Feb 16, 2011

Scope

ISO 8994:2011 specifies a grid rating system that provides a means of defining levels of performance of anodic oxidation coatings on aluminium and its alloys that have been subjected to corrosion tests.
This rating system is applicable to pitting corrosion resulting from

accelerated tests,
exposure to corrosive environments, and
practical service tests.

ISO 8994:2011 takes into account only pitting corrosion of the basis metal resulting from penetration of the protective anodic oxidation coating.