Super Duplex
- Home
- Super Duplex
Super Duplex
Super duplex steel is a type of duplex stainless steel that has higher corrosion resistance and mechanical strength than standard duplex steel. It contains a higher percentage of chromium, nickel, and molybdenum, as well as other alloying elements like nitrogen, copper, and tungsten. There are several grades of super duplex steel, each with unique properties that make them suitable for specific applications. Here is a brief description of super duplex steel products with grades
| Grade | UNS Number | Composition (%) | Density (g/cm³) | Melting Point (°C) | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Applications |
|---|---|---|---|---|---|---|---|---|
| Super Duplex 2507 | S32750 | Cr 24-26, Ni 6-8, Mo 3-5, N 0.24-0.32, Fe balance, C ≤ 0.03, Si ≤ 0.8, Mn ≤ 1.2 | 7.8 | 1350-1400 | 800-1000 | 550-800 | 15-25 | Offshore oil and gas, chemical processing, marine environments, desalination plants |
| Super Duplex 2550 | S32550 | Cr 24-27, Ni 4.5-6.5, Mo 2.9-3.9, Cu 1.5-2.5, N 0.10-0.25, Fe balance, C ≤ 0.04 | 7.8 | 1350-1400 | 680-930 | 450-680 | 15-25 | Chemical processing, petrochemical, marine, pulp and paper industries |
| Super Duplex 32760 | S32760 | Cr 24-26, Ni 6-8, Mo 3-4, W 0.5-1.0, Cu 0.5-1.0, N 0.2-0.3, Fe balance, C ≤ 0.03 | 7.8 | 1350-1400 | 750-950 | 550-700 | 20-25 | Oil and gas, chemical processing, seawater desalination, marine engineering |
| Super Duplex 32750 | S32950 | Cr 24-26, Ni 6-8, Mo 3-5, N 0.24-0.32, Cu 0.5-1.0, W 0.5-1.0, Fe balance, C ≤ 0.03 | 7.8 | 1350-1400 | 800-1000 | 550-800 | 15-25 | Offshore platforms, heat exchangers, desalination, chemical processing |
| Super Duplex 2507 LDX | S32101 | Cr 21-23, Ni 1.35-1.70, Mo 0.1-0.8, Mn 4.0-6.0, N 0.20-0.25, Fe balance, C ≤ 0.04 | 7.8 | 1350-1400 | 600-800 | 450-550 | 25-35 | Chemical processing, pulp and paper industry, water treatment, food processing |
Super duplex 2507: Super duplex 2507 contains 25% chromium, 7% nickel, 4% molybdenum, and 0.25% nitrogen. It has excellent corrosion resistance in various environments, including seawater and acidic solutions. It has high strength and is often used in chemical processing, oil and gas, and marine applications.
| EN Number | Alloy Designation | Composition (%) | Density (g/cm³) | Melting Point (°C) | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Applications |
|---|---|---|---|---|---|---|---|---|
| EN 1.4410 | X4CrNiMo16-5-1 | C ≤ 0.03, Cr 24.0-26.0, Ni 6.0-8.0, Mo 4.0-5.0, N 0.20-0.30 | 7.80 | 1450-1500 | 800-1000 | 600-800 | 15-20 | Oil and gas, chemical processing, heat exchangers |
| EN 1.4501 | X2CrNiMoCuWN25-7-4 | C ≤ 0.03, Cr 24.0-26.0, Ni 7.0-9.0, Mo 4.0-5.0, Cu 0.5-1.0, W 0.8-1.2, N 0.20-0.30 | 7.80 | 1450-1500 | 800-1000 | 600-800 | 15-20 | Chemical processing, petrochemical, marine environments |
| EN 1.4507 | X3CrNiMoCuWN26-7-4 | C ≤ 0.03, Cr 25.0-27.0, Ni 7.0-9.0, Mo 4.0-5.0, Cu 1.0-2.0, W 1.0-1.5, N 0.20-0.30 | 7.80 | 1450-1500 | 850-1050 | 650-800 | 15-20 | High-pressure environments, marine applications |
| EN 1.4462 | X2CrNiMoN22-5-3 | C ≤ 0.03, Cr 21.0-23.0, Ni 4.5-6.5, Mo 2.5-3.5, N 0.08-0.20 | 7.80 | 1400-1450 | 650-950 | 450-600 | 20-25 | Chemical processing, marine environments |
Super duplex Zeron 100: Super duplex Zeron 100 contains 25% chromium, 7% nickel, 3.5% molybdenum, and 0.5% copper. It has excellent corrosion resistance in harsh environments, such as high-temperature seawater, and is often used in oil and gas, chemical processing, and marine applications.