The crevice corrosion resistance of commercial and experimental stainless steels was evaluated by a 60 day exposure in filtered seawater at 25 C (77 F). These results were compared with those of crevice tests in ambient seawater and in FeCl3. The filtered seawater revealed differences in corrosion resistance for a wide range of alloys, including many highly corrosion resistant compositions. It was found that ferritic, austenitic and duplex stainless steels with at least 25Cr and 3.5Mo offer good corrosion resistance in the filtered seawater test, provided that the austenitic and duplex stainless steels contain 0.2N and the ferritic steels have very low nitrogen content.

Subject
Molybdenum, Chromium, Hydrogen attack, Seawater, Crevices, Corrosion attacks, Penetration, Nitrogen content, Nitrogen, Crevice corrosion, Steel, Corrosion resistance, Stainless steel
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1984
Association for Materials Protection and Performance (AMPP)
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