atmospheric corrosion resistant steel

With the continuous development of science and technology, the materials used by production enterprises are further updated. The application field of corrosion-resistant structural steel plate is constantly expanding, and it is more and more favored by various manufacturers and has a trend of gradually replacing ordinary structural steel.

The development of structural steel is inseparable from the cooperation of anti-corrosion technology, especially the corrosion resistance of structural steel has become a major topic of concern in the world today. In a sense, the anti-corrosion technology of steel is a key condition to ensure the normal use and durability of structural steel. Corrosion-resistant structural steel is a small amount of alloying elements added to the steel, such as: Cu, P, Cr, Ni, etc. It forms a protective layer on the surface of the metal substrate and improves the corrosion resistance of the steel, which is better than the general bare metal structural steel.

Weathering steel (atmospheric corrosion resistant steel) is a low-alloy steel series between ordinary steel and stainless steel, which is cheap and good. After integrating into the new mechanism, new technology and new process of modern metallurgy, it can develop and innovate sustainably.

Weathering steel is made of ordinary carbon steel with a small amount of corrosion-resistant elements such as copper and nickel added. The weather resistance is 2-8 times that of ordinary carbon steel, and the paintability is 1.5-10 times that of ordinary carbon steel. It can be used in thinning, bare or simplified painting. The steel has the characteristics of rust resistance, corrosion resistance and longevity of components, thinning and consumption reduction, labor saving and energy saving, which benefit component manufacturers and users. For example, the coating cost savings of weathering steel bridges can be as high as more than 10% of the construction investment. Weathering steel has great economic significance and is in line with today's "green" concepts such as high efficiency, longevity, energy saving and environmental protection and the direction of national development policies.