Corten A Plates is an alloy (i.e. the combination of two or more elements of which at least one is a metal, and where the resultant material has metallic properties). Corten B Plates is based on nickel (65 % - 70 %) and copper (20 % - 29 %) and also contains iron and manganese (5 %) and other compounds. Corten Steel A Plates is a very expensive alloy, with a cost ranging from 5 to 10 times the cost of copper and nickel. Hence the use of Corten Steel B Plates is limited to those applications where it cannot be replaced with cheaper alternatives. Compared to carbon steel, piping in Corten A Weathering Steel Plates is more than 3 times as expensive. ASTM A242 Corten A Steel Plates is weather resistant steel created by alloying copper, chromium, and nickel. ASME SA 242 Corten B Steel Plates needs to be turned and worked at slow speeds and low feed rates.










