Cor-ten is a high strength, low alloy, weldable structural steel possessing excellent weathering resistance. It may be used to advantage in painted or unpainted condition. The steel owes its weathering resistance to the formation of a protective oxide coating which seals the surface against further corrosion. The coating is of a dark brown appearance and if shipped or damaged, repairs itself to give a continuity of protection an appearance.
Corten is recommended for use where high structural strength is needed and where maintenance is difficult. With mechanical properties similar to conventional steels, Cor-ten can be used to construct lighter structures utilising well-established design practices but with the advantage of improves weathering properties.
The trademark COR-TEN is used under license from the USX Corporation, USA