Weathering steel plate is a steel plate that is resistant to atmospheric corrosion, which is a series of low alloy steels between ordinary steel and stainless steel. Weathering steel plate is made of ordinary carbon steel with a small amount of corrosion-resistant elements such as copper and nickel added. According to its main characteristics, it is divided into high weather resistance structural steel plate and weathering steel plate for welded structure. Weathering steel realizes sustainable development and innovation after integrating into new modern metallurgical mechanisms and new technologies, and is one of the series of steels at the forefront of world technology. 

High weathering steel plate

High weather resistance structural steel is to add a small amount of copper, phosphorus, chromium and nickel elements to the steel to form a protective layer on the surface of the metal collective to improve the atmospheric corrosion resistance of the steel, and a small amount of molybdenum, niobium, Vanadium, titanium, zirconium and other elements are used to refine the grains, improve the mechanical properties of the steel, improve the strength and toughness of the steel, reduce the brittle transition temperature, and make it have better resistance to brittle fracture.

Weathering steel for welded structures

The elements added to the steel, except for phosphorus, are basically the same as those of high weather resistance structural steel, and their functions are basically the same. The welding performance of weathering steel for welded structure is better than that of high weathering structural steel, and it is mainly used for welded structural parts of bridges, buildings and other structures.