The salt spray test is a standardized method (ASTM B117) used to evaluate the corrosion resistance of materials and coatings by exposure to a corrosive salt fog environment. It helps assess the material’s ability to withstand corrosion and degradation under controlled conditions, mimicking harsh real-world environments like marine or industrial settings. The test involves spraying a salt solution onto the test specimen within a controlled chamber, where factors like salt concentration, temperature, and humidity are precisely regulated. The duration of the test varies based on industry requirements, and results are interpreted through corrosion ratings, providing valuable insights into the material’s corrosion resistance.