ISO 8993:1989

Anodized aluminium and aluminium alloys — Rating system for the evaluation of pitting corrosion — Chart method

Specifies a chart rating system based on standard charts that provides a means of defining levels of performance of anodic oxide coatings that have been subjected to corrosion tests. This rating system is applicable to pitting corrosion of the basis metal resulting from accelerated tests, exposure to corrosive environments and practical service tests.