Alloyed with nickel, copper and chromium, this increases the strength and corrosion resistance. Originally used in USA in the 1930’s for coal carriages, Corten is now used in a variety of different outdoor applications. Within architecture it can be incorporated into many designs such as buildings, roofing, bridges and sculptures.
The oxidisation process which develops on Corten Steel, occurs when the material is subjected to the alternating wet and dry conditions which exist outdoors. Over time, the rust layer develops into a patina layer changing the colour from orange to dark brown through continuous regeneration promoting resistance to corrosion.
The entire oxidisation process can take between 4-10 years, however more frequent wet and dry cycles will speed this process up. Whilst the Corten steel doesn’t prevent rusting, it will reduce the amount of corrosion when applied correctly.