COR-TEN steel sheet
Cor-ten steel is a type of steel made with a chemical composition that leads to its oxidation having particular characteristics that protect a part made with this material against atmospheric corrosion practically without losing its mechanical characteristics.
The surface oxidation of COR-TEN steel creates a film of rust impervious to water and water vapour that prevents the oxidation of the steel from continuing on into the part. This means that the surface oxide protects it against atmospheric corrosion, so it is not necessary to apply any other type of protection to the steel such as galvanic or paint.
It comes in the following formats: