Seamless & welded pipe
ASTM A333 Grade 3 — chemistry & properties
ASTM A333 Grade 3 (Seamless & welded pipe, UNS K31918): chemical composition and mechanical properties. 3.5 % nickel pipe for −101 °C service
Chemical composition (wt %)
| C | ≤ 0.19 |
| Mn | 0.31 – 0.64 |
| P | ≤ 0.025 |
| S | ≤ 0.025 |
| Si | 0.18 – 0.37 |
| Ni | 3.18 – 3.82 |
Mechanical properties
| Tensile strength, min | 450 MPa |
| Yield strength, min | 240 MPa |
| Elongation, min | 30 % |
| Hardness | Not specified |
| Impact test | −100 °C (−150 °F), 18 J avg, full size |