Salt Spray Test

Salt Spray Test is an artificial accelerated corrosion test that simulates marine or salt-containing humid environments, used to evaluate the corrosion resistance of metal materials, electroplated layers, coatings, and products. In foreign trade, this term is commonly found in industries such as hardware, auto parts, electronics, and outdoor furniture. Buyers usually require suppliers to provide salt spray test reports (e.g., Neutral Salt Spray NSS, Acid Salt Spray ASS, Copper-Accelerated Acetic Acid Salt Spray CASS), and specify test duration (e.g., 24h, 48h, 96h) and acceptance criteria (e.g., no red rust, blistering, peeling, etc.). Note: Different standards (ASTM B117, ISO 9227, GB/T 10125) have different test conditions, and results cannot be directly compared; test duration has no linear relationship with real-world service life and must be negotiated based on the product's usage environment. Difference from 'Weathering Test': Salt spray test focuses on salt spray corrosion, while weathering test simulates combined climate factors such as UV, temperature, and humidity. Often confused with 'Salt Spray Test', but in foreign trade, 'test' emphasizes customer verification requirements.