Stainless Steel Alloys

Super Duplex 100

Super Duplex 100

Composition of Pipe and Tubing

GradeSuper Duplex 100
UNS DesignationS32760
Carbon (C) Max. 0.05
Manganese (Mn) Max. 1.00
Phosphorous (P) Max. 0.030
Sulphur (S) Max. 0.010
Silicon (Si) Max. 1.00
Chromium (Cr) 24.0–26.0
Nickel (Ni) 6.0–8.0
Molybdenum (Mo) 3.0–4.0
Nitrogen (N) 0.20–0.30
Iron (Fe) Bal.
Copper (Cu) 0.50–1.00
Other Elements W 0.50–1.00, 40 min*
Super Duplex 100

Physical Properties in the Annealed Condition at -20°F to +100°F

   Tensile StrengthYield Strength      
AlloyUNS DesignationSpec.psiMPaksipsiMPaksiElongation in 2 in. (min.) %Grain Size Req.Max. HardnessModulus of Elasticity (x106 psi)Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6)Thermal Conductivity (BTU-in/ ft2-h-°F)
Super Duplex 100 S32760 A789, A790 109,000 750 109 80,000 550 80 25 — 31 Rc — 7.5 156