Explanation

Also known as atmospheric corrosion resistant steel, it is used in engineering structures to resist corrosion damage in atmospheric environment. The weathering resistance of steel can be significantly improved by adding C, Cr, Cu, RE, O, Ni and other alloy elements into steel. These added alloy elements help to improve the structure of the rust layer of steel, increase the density of the rust layer and the adhesion between the rust layer and the matrix of steel, thus enhancing the air isolation of steel product and significantly improving the atmospheric corrosion resistance of steel product. atmospheric corrosion resisting steel is usually low carbon low alloy structural steel, and its weathering resistance is generally several times to dozens of times higher than the corresponding non-alloy steel. In humid environments, such as tunnels, bridges, high humidity areas and other places, atmospheric corrosion resisting steel is widely used to manufacture engineering structures and equipment components to improve their weather resistance.

Classification