The UNS S31803 Fasteners are composed of carbon, manganese, silicon, phosphorus, sulfur, chromium, molybdenum, nickel, nitrogen, and iron. Duplex Steel S32205 Fasteners are nitrogen-improved duplex stainless steel that was created to combat normal corrosion issues experienced with the 300 series stainless steel. Duplex Steel S31803 Fasteners are neither completely austenitic nor absolutely Ferritic. The structure of S31803 duplex stainless steel comprises austenite pools encompassed by a persistent ferrite phase. We also manufacture other material fasteners like Inconel Fasteners, Hastelloy Fasteners, Copper Nickel Fasteners, etc.