Duplex steel 2507 (UNS S32750) is a super duplex alloy with exceptional strength and corrosion resistance, suitable for highly corrosive environments like seawater and chemical processing.
Element | Content (%) |
Chromium (Cr) | 24.0 – 26.0 |
Nickel (Ni) | 6.0 – 8.0 |
Molybdenum (Mo) | 3.0 – 5.0 |
Carbon (C) | ≤ 0.030 |
Manganese (Mn) | ≤ 1.20 |
Silicon (Si) | ≤ 0.80 |
Nitrogen (N) | 0.24 – 0.32 |
Iron (Fe) | Balance |
Property | Value (Typical) | Unit | Condition |
Tensile Strength (Ultimate) | ≥ 750 | MPa | Annealed |
Yield Strength (0.2% Offset) | ≥ 550 | MPa | Annealed |
Elongation (in 50 mm) | ≥ 25 | % | ASTM A370 |
Hardness (Brinell) | ≤ 310 | HB | |
Density | 8.00 | g/cm³ | Room Temp |
Melting Range | 1300 – 1390 | °C | |
Modulus of Elasticity | ~210 | GPa | Room Temp |
Category | Standard Code | Description |
Pipe | ASTM A790 / ASME SA790 | Seamless and welded super duplex stainless steel pipe |
Tube | ASTM A813 / ASME SA813 | Welded super duplex stainless steel tube |
Fittings | ASTM A824 / ASME SA824 | Super duplex stainless steel piping fittings |
