Carbon steel is an iron-carbon alloy with a carbon content of 0.0218% to 2.11%.
Generally, the higher the carbon content of carbon steel,
the greater the hardness and the higher the strength, but the lower the plasticity.

Weathering steel, that is, atmospheric corrosion resistant steel, is a series of low alloy steel between ordinary steel and stainless steel.
It has the properties of high-quality steel such as strength, ductility,
forming, welding, abrasion, high temperature, fatigue resistance, etc.