The standard defines accelerated testing methods for corrosion of metals and alloys under controlled Humidity cycles and conditions of intermittent spray salt solutions. The standard aims to simulate the corrosion behavior of metallic materials under the influence of environmental factors, and is particularly applicable to metals and their coatings in the automotive industry. The test involves exposure to a 1% NaCl micro-acidified solution twice a week and a Humidity cycle between 95% RH and 50% RH at 35 ° C. This method is usually a better reflection of corrosion in actual conditions of use than continuous salt spray testing. The standard does not specify sample size and specific result interpretation. Detailed requirements should refer to the corresponding product specifications.