A group of steel alloys which were developed to eliminate the need for painting, and form a stable rust-like appearance. The corrosion process usually takes about 18-36 months. The anticorrosive properties of weather resistant steel are better than those of other structural steels. The material is self-protecting, the rust layer on the surface becomes a tight oxide layer that slows down the progress of corrosion.
The material reaches a stable oxidation point where further oxidation may occur but does not effect the quality of the steel. The visual appearance of the Corten Steel is something that it, the material weathers to a natural brown colour which darkens gradually.
The material is A1 non-combustible, long-lasting and fully recyclable.