Super Duplex Steel S32750 / S32760 is a high-alloy super duplex stainless steel engineered for exceptional strength and outstanding resistance to severe corrosion environments. With higher chromium, molybdenum, and nitrogen content, it provides superior protection against pitting, crevice corrosion, and stress corrosion cracking, even in highly aggressive chloride conditions. Super Duplex Steel S32750 / S32760 offers nearly double the yield strength of standard austenitic stainless steels while retaining good toughness and weldability. It is extensively used in offshore platforms, desalination plants, subsea components, chemical processing equipment, and heat exchangers where extreme mechanical loads and corrosive conditions demand uncompromising performance.
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Other Types of Super Duplex Steel S32750 / S32760 Bars
CHEMICAL COMPOSITION OF SUPER DUPLEX STEEL S32750 / S32760 ROUND BAR
C %
Cr %
Ni %
Mo %
N %
Others
0.020 max
24.0 – 26.0
6.0 – 8.0
3.0 – 5.0
0.24 – 0.32
S ≤ 0.001
MECHANICAL PROPERTIES OF SUPER DUPLEX STEEL S32750 / S32760 ROUND BAR
Property
Value
Ultimate Tensile Strength
≥ 116 ksi (800 MPa)
0.2% Proof Yield Strength
≥ 80 ksi (550 MPa)
0.1% Proof Yield Strength
≥ 91 ksi (630 MPa)
Elongation (2 inches)
≥ 15%
Hardness
Rockwell C ≤ 32
Impact Energy
≥ 74 ft-lbs
PHYSICAL PROPERTIES OF SUPER DUPLEX STEEL S32750 / S32760 ROUND BAR
Property
Unit
Value
Density
lb/in³
0.28
Modulus of Elasticity
psi × 10⁶
29
Coefficient of Thermal Expansion (68–212°F)
×10⁻⁶ /°F
7.2
Thermal Conductivity
Btu/hr·ft·°F
8.7
Heat Capacity
Btu/lb·°F
0.12
Electrical Resistivity
Ω-in ×10⁻⁶
31.5
💡 Practical Difference in Use
Use Super Duplex Steel S32750 / S32760 Round Bars when: extreme corrosion resistance, very high strength, and superior performance in aggressive environments are required. Super Duplex grades contain higher chromium, molybdenum, and nitrogen, providing exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking.
→ Example: offshore platforms, subsea components, desalination plants, chemical processing equipment, and high-pressure systems.
Bright Finished / Forged Super Duplex S32750 / S32760 Round Bars when: critical load-bearing performance, precision machining, and surface integrity are essential. Bright or forged bars offer enhanced strength, toughness, and dimensional accuracy for demanding applications.
→ Example: subsea shafts, high-pressure valves, offshore fasteners, marine pumps, and precision machined components.
Applications of Super Duplex Steel S32750 / S32760 Round Bars
Super Duplex S32750 / S32760 round bars are used in the most demanding industrial environments where failure is not an option.
