The ASTM B368-21 standard describes the method of the CASS (CASS) test to evaluate the corrosion performance of Eletroplating copper/nickel/chromium coatings. This test applies to decorative coatings and their performance on steel, zinc alloys, aluminum alloys and plastics. The standard provides test conditions but does not include specific provisions for Sample type or exposure period. CASS testing is used in manufacturing control and research and development to help improve Eletroplating mass and drive process improvements.