Duplex Steel UNS S31803 Sheets amongst our clients. Duplex Steel UNS S31803 Plates are used in Food processing equipment, Oil field piping and heat exchangers, Flue gas desulfurization equipment, and more. It has lower thermal expansion and higher heat conductivity than austenitic stainless steels. Duplex Steel UNS S31803 Coils are magnetic, a property that can be used to easily differentiate them from common austenitic grades of stainless. They are also used in Cargo tanks for ships and trucks, Biofuels plants, and more. A mixture of nitric acid and fluoric acid is used in pickling. Our product is as well commonly used in gas turbine blades, seals and in many other applications. We also offer these products in customized specifications.