Corten steel is named after its two most important properties: COR (corrosion resistant) and TEN (tensile strength) and is the most well-known weathering steel.
Corten steel is an iron alloy with added copper, phosphorous, silicon, nickel and chrome. Once this alloy is exposed to ambient elements it forms a relatively stable protective layer of oxidation. This layer of oxidation is so compact that the underlying steel is protected from the elements and cannot corrode further. The tensile strength is comparable with that of other alloyed steels such as stainless steel.
Weather-resistant corten steel, with its characteristic rusty brown colouring is used primarily to clad façades, for bridges and other engineering structures.
De Boer Staal supplies corten steel in thicknesses from 4 - 40 mm.