Stainless steel Super Duplex 2507 is designed to handle highly corrosive conditions and situations were high strength is required. High molybdenum, chromium and nitrogen content in Super Duplex 2507 help the material withstand pitting and crevice corrosion. The material is also resistant to chloride stress corrosion cracking, to erosion corrosion, to corrosion fatigue, to general corrosion in acids. This alloy has good weldability and very high mechanical strength.
The following sections will discuss in detail about stainless steel grade Super Duplex 2507.
The chemical composition of stainless steel grade Super Duplex 2507 is outlined in the following table.
| Element |
Content (%) |
| Chromium, Cr |
24 – 26 |
| Nickel, Ni |
6 – 8 |
| Molybdenum, Mo |
3 – 5 |
| Manganese, Mn |
1.20 max |
| Silicon, Si |
0.80 max |
| Copper, Cu |
0.50 max |
| Nitrogen, N |
0.24 – 0.32 |
| Phosphorous, P |
0.035 max |
| Carbon, C |
0.030 max |
| Sulfur, S |
0.020 max |
| Iron, Fe |
Balance |
The physical properties of stainless steel grade Super Duplex 2507 are tabulated below.
| Properties |
Metric |
Imperial |
| Density |
7.8 g/cm3 |
0.281 lb/in3 |
| Melting point |
1350°C |
2460°F |
Super Duplex 2507 is widely used in the following sectors:
Products made using Super Duplex 2507 include:
Propellers, rotors, and shafts