Wrought butt-weld fittings
ASTM A420 WPL3 — chemistry & properties
ASTM A420 WPL3 (Wrought butt-weld fittings): chemical composition and mechanical properties. 3.5 % nickel butt-weld fittings for −101 °C service
Chemical composition (wt %)
| C | ≤ 0.2 |
| Mn | 0.31 – 0.64 |
| P | ≤ 0.05 |
| S | ≤ 0.05 |
| Si | 0.13 – 0.37 |
| Ni | 3.2 – 3.8 |
Mechanical properties
| Tensile strength, min | 450 MPa |
| Yield strength, min | 240 MPa |
| Elongation, min | 22 % |
| Hardness | Not specified |
| Impact test | −101 °C |