Super Duplex Tube

 Duplex Stainless Steel have a structure that contains both ferrite and austenite. Duplex alloys have higher strength and better stress corrosion cracking resistance than most austenitic alloys and greater toughness than ferritic alloys, especially at low temperatures. The corrosion resistance of duplex alloys depends primarily on their composition, especially the amount of chromium, molybdenum, and nitrogen they contain

Standard: ASTM/ASME A/SA789, A/SA790, A/SA928, DIN17456/17458, EN10216-5. After negotiation, we can supply pipe with customer's special requirement. Material Grade: Chemical Composition UNS EN DIN C % Cr% Ni% Mo% N% Other % S31803 1.4462 X2CrNiMoN22-5-3 0.030max 21.0-23.0 4.5-6.5 2.5-3.5 0.08-0.20        / S32205 1.4462 X2CrNiMoN22-5-3 0.030max 22.0-23.0 4.5-6.5 3.0-3.5 0.14-0.20        / S32101 1.4162   0.040max 21.0-22.0 1.35-1.70 0.10-0.80 0.20-0.25 Cu 0.10-0.80 S32304     0.030max 21.5-24.5 3.0-5.5 0.05-0.60 0.15-0.20 Cu 0.05-0.60 S32750 1.4410 X2CrNiMoN25-7-4 0.030max 24.0-26.0 6.0-8.0 3.0-5.0 0.24-0.32 Cu 0.50max S32760     0.050max 24.0-26.0 6.0-8.0 3.0-4.0 0.20-0.30 Cu 0.50-1.00   Mechanical Property:   UNS Tensile Strength Min, Mpa Yield Strength Min, Mpa Elongation in 2 in Or 50mm Min, % Hardness Max, HRC S31803 620 450 25 30 S32205 655 485 25 30 S32101 700 530 30 30 S32304 690 450 25 30 S32750 800 550 15 32 S32760 750 550 25 32

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