2507 Super Duplex Stainless Steel Forging Grade
Feb 26, 2026
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Chemical Composition (% typical):
| Element | Typical (%) | Function |
| Chromium (Cr) | 24.0 – 26.0 | Increases general and localized corrosion resistance |
| Nickel (Ni) | 6.0 – 8.0 | Stabilizes austenite, improves toughness and weldability |
| Molybdenum (Mo) | 3.0 – 5.0 | Enhances pitting and crevice corrosion resistance |
| Nitrogen (N) | 0.24 – 0.32 | Strengthens alloy and increases resistance to SCC |
| Carbon (C) | ≤ 0.03 | Minimizes carbide precipitation and intergranular corrosion |
| Manganese (Mn) | ≤ 1.2 | Aids deoxidation and improves hot-working |
| Silicon (Si) | ≤ 0.8 | Enhances oxidation resistance |
| Phosphorus (P) | ≤ 0.035 | Kept low to prevent embrittlement |
| Sulfur (S) | ≤ 0.020 | Controlled for improved ductility and toughness |
3. Physical Properties of 2507 Super Duplex Stainless Steel
| Property | Value |
| Density | 7.8 g/cm³ |
| Melting Range | 1350 – 1400 °C |
| Thermal Conductivity | ~18 W/m·K at 100 °C |
| Specific Heat | 500 J/kg·K |
| Elastic Modulus | ~200 GPa |
| Coefficient of Thermal Expansion | 13 µm/m·K (20–100 °C) |
| Magnetic | Slightly magnetic due to ferritic phase |
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