Super duplex pipe
ASTM A790 S32750 (Super Duplex) — chemistry & properties
ASTM A790 S32750 (Super Duplex) (Super duplex pipe, UNS S32750): chemical composition and mechanical properties. Super duplex seawater and process piping
Chemical composition (wt %)
| C | ≤ 0.03 |
| Mn | ≤ 1.2 |
| P | ≤ 0.035 |
| S | ≤ 0.02 |
| Si | ≤ 0.8 |
| Cr | 24 – 26 |
| Ni | 6 – 8 |
| Mo | 3 – 5 |
| Cu | ≤ 0.5 |
| N | 0.24 – 0.32 |
Mechanical properties
| Tensile strength, min | 800 MPa |
| Yield strength, min | 550 MPa |
| Elongation, min | 15 % |