Cyclic salt spray corrosion test chamber more realistically simulate the natural climate of the material in the endurance of the usual actual atmospheric exposure there are two kinds of wet and dry conditions, accelerated laboratory testing to simulate natural cycling conditions to make sense. Studies have shown that in cyclic corrosion testing, the relative corrosion rate, structure and morphology more similar to the outdoor situation. Therefore, compared to conventional salt spray testing, cyclic testing is usually more comparable to outdoor conditions.