ASTM B368 sets out the conditions required for copper-accelerated acetic acid-salt spray (fog) testing, known as the CASS test, for specification purposes. It does not prescribe the type of test specimen, the exposure periods or how to interpret the results.
The method applies to decorative copper/nickel/chromium or nickel/chromium coatings on steel, zinc alloys, aluminum alloys and plastics designed for severe service, and to anodized aluminum. For other coatings or materials, ASTM says the suitability of the test should be checked first and results correlated with service experience. The CASS test is widely used for specification acceptance, simulated service evaluation, manufacturing control, and research and development.
CASS exposure is run in a salt spray (fog) cabinet that holds the specified test conditions for the length of the exposure. Our GenSalt salt spray tester is used for salt spray testing to ASTM B368. If you need help matching ASTM B368 requirements to your parts or setup, contact our team.
