Duplex Steel Fasteners

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Duplex Steel Fasteners | UNS S31803, S32205

Nine Piping Solutions are supplier of Duplex Steel S31803 / S32205 , which always react more sensitively towards precipitation. Duplex S31803 Hex Head Bolts should be ensured that the temperature range between 950 Degree C and 700 Degree C is traversed in no more than two minutes.

Due to the possibility that other undesired metallic phases could arise, these Duplex S32205 Hex Head Nuts is further cooling down to 300 Degree C and should be undertaken as quickly as possible. Duplex S31803 Square Bolts are also easy to weld according to the usual rules for welding stainless steels. Extremely low and extremely high heat input should be avoided in these Duplex S32205 Square Nuts, depending on the seam geometry, the thickness of the steel and the welding process.


Standard DIN, ASTM, BS
Size M3 – M56 | 3/6″ to 2″ | Custom Sizes
Specification ASTM A 479 ASME SA 479
Length 3 mm to 200 mm