• Pipes & Tubes

  • Flanges

  • Sheets

  • Coils

Grades
Super Duplex Products

Products of Duplex Steel UNS S31803
• Buttweld Fittings • Forged Fittings • Flanges
• Outlet Fittings • Pipes & Tubes • Sheets & Plates
• Bars & Rods • Wire

Super Duplex stainless like Duplex, is a mixed microstructure of austenite and ferrite (50/50) which has improved strength over ferritic and austenitic steel grades. The main difference is that Superduplex has a higher Molybdenum and Chromium content which gives the material greater corrosion resistance.

Mechanical Properties
UNS No Grade Proof Stress
0.2% (MPa)		 Tensile Strength
(MPa)		 Elongation
A5(%)		 Hardness Max
HB HRB
S32750 2507 550 795 15 310 32*

Chemical Composition
UNS No Grade C Si Mn P S Cr Mo Ni N Other
S32750 2507 0.030 0.80 1.20 0.035 0.020 24.0/26.0 3.0/5.0 6.00/8.00 0.24/0.32 Cu:0.50