The Volvo VCS 1027, 14-0 standard defines an accelerated corrosion test (ACT) method for evaluating the corrosion resistance of metallic materials, particularly in environments where significant chloride effects are present, such as marine-derived sodium salts or road de-icing salts. The test uses periodic exposure to changing climate conditions. The main test period is one week, divided into two 12-hour sub-cycles: one is a cycle process controlled by Humidity, and the other involves the application of salt solutions. Humidity and temperature changes are included in the test to simulate corrosion conditions in the real environment. This standard is suitable for evaluating the performance of metallic materials in extreme climates, helping to ensure the durability and Reliability of materials.