Duplex Pipe Supplier Duplex Valves | US Metals
The Duplex ferritic/austenitic alloys are intended for general service in corrosive environments. They exhibit strong resistance to stress corrosion cracking, filling the gap between austenitic stainless and the nickel alloys. Duplex grades UNS S31803 and S32205 are the most common grades. The Chemical Process Industry uses them in sulfuric, nitric and phosphoric acid environments.