Characteristics of Q355GNH weathering steel

Q355GNH weathering steel is a steel that forms a protective layer on the surface of metal substrate by adding a small amount of alloy elements such as Cu, P, Cr, Ni, etc., to improve the atmospheric corrosion resistance. Weather-resistant steel has the strength, ductility, forming, welding and cutting, abrasion, high temperature, fatigue resistance and other characteristics of high-quality steel; The weathering resistance is 2-8 times of that of ordinary carbon steel, and the coating resistance is 1.5-10 times of that of ordinary carbon steel. At the same time, it has the characteristics of rust resistance, corrosion resistance and life extension of components, thinning and consumption reduction, labor saving and energy saving.

Weather-resistant structural steel is a series of low alloy steel between ordinary steel and stainless steel, which is made of ordinary carbon steel with a small amount of corrosion resistant elements such as copper and nickel.

Q355GNH weathering steel is mainly used for steel structures exposed to the atmosphere for a long time, such as railway vehicles, bridges, towers, etc.