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hex bolt DIN931 933 S31803 deplex bolt

ASTM A1082 specification alloy S31803 fasteners have higher pitting and crevice corrosion than stainless steel alloy 316. Due to its higher corrosion resistance, alloy grade UNS S31803 is able to exhibit better fatigue strength than other commonly used austenitic stainless steel grades in environments containing corrosive media.

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UNS S31803 Fasteners Also known as 1.4462 or F51, have good weldability similar to other stainless grades. The low thermal expansion of ASTM A1082 Duplex Grade S31803 Bolts reduces residual stress after welding operations. At the same time, UNS S31803 hex head bolts are high strength and are used for high torque strength in hex head shapes. Some applications provide very tight spaces where 1.4462 studs are useful.

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