UNS S32750 Super Duplex Welded Pipes

SAF2507 (UNS S32750) super duplex steel consists of 25% chromium, 4% molybdenum and 7% nickel, the high content of chromium, molybdenum and nitrogen, which results in a Pitting Equivalent Number (PREN) of >41, which provides excellent resistance to pitting and crevice corrosion, especially in seawater and other chlorine-containing environments.S32750 Super Duplex Stainless Steel Welded Tubes and Pipes are suitable for chemical processing, petrochemical and subsea equipment.

Chemical composition and mechanical properties

Alloy 32750 has a high content of chromium, molybdenum and nitrogen, which results in a Pitting Equivalent Number (PREN) of >41, providing excellent resistance to pitting and crevice corrosion, especially in seawater and other chlorinated environments.

0.2% yield strength: 550 N/mm² (79.8 ksi)

Tensile strength: 800 N/mm² (116 ksi)

Elongation (5.65 √S0): 25%

Area shrinkage: 45%

Brinell hardness: <270

Room temperature impact strength: 80 J

-46°C longitudinal and transverse impact strength: min. 35J

Physical Properties

Density: 7810 Kg/m³

Magnetic permeability (20°C): 33

Young's modulus: 199 kN/mm²

Specific electrical resistance, 20°C: 0.8 µΩ.m

Coefficient of thermal expansion, 20-300°C: 11.1 x 10-⁶ m/m/°C

Specific heat capacity, 20°C: 475 J/kg.K

Thermal conductivity, 20°C: 14.2 W/m.K

S32750 Duplex Steel Pipe Specification

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