Weathering Steel is advantageous to the atmospheric corrosion. It contains a small amount of Cr, Ni, Cu, and P elements to form up a protective layer on the surface for slowing down the corrosion.
It is in a range of 2~8 times capable of the atmospheric corrosion to the general carbon steel. It is mainly using for vehicle, bridge, containerizing, construction, and gantry(crane) for lifespan longer.