For Structural steel, Neutral Salt Spray Test has better consistency with Alternate Immersion Test, and Alternate Immersion Test has a heaver acceleration effect than Neutral Salt Spray, the former is applied to semi-industrial marine climate, the latter is applied to marine atmospheric environment. 对于结构钢,盐雾试验和周期浸润试验结果有较好的一致性,周期浸润试验加速程度大于中性盐雾试验,前者适用于半工业海洋气候,后者适用于海洋大气环境。