The test method covers procedures for the determination of the resistance of stainless steels and related alloys to pitting and crevice corrosion when exposed to oxidizing chloride environments.

This test cover the following five methods: Practice A to F. Susceptibility to intergranular attack associated with the precipitation of chromium carbides is readily detected in all five tests. Sigma phase in wrought chromium-nickel molybdenum steels, which may or may not be visible in the microstructure, can result in high corrosion rates only in nitric acid. Sigma phase in titanium or columbium stabilized alloys and cast molybdenum-bearing stainless alloys, which may or may not be visible in the microstructure, can result in high corrosion rates in both the nitric acid and ferric sulphate-sulphuric acid solutions.