Wrought butt-weld fittings
ASTM A234 WP5 Cl.1 — chemistry & properties
ASTM A234 WP5 Cl.1 (Wrought butt-weld fittings, UNS K41545): chemical composition and mechanical properties. 5Cr-½Mo butt-weld fittings for refinery service
Chemical composition (wt %)
| C | ≤ 0.15 |
| Mn | 0.3 – 0.6 |
| P | ≤ 0.04 |
| S | ≤ 0.03 |
| Si | ≤ 0.5 |
| Cr | 4 – 6 |
| Mo | 0.44 – 0.65 |
Mechanical properties
| Tensile strength, min | 415 MPa |
| Yield strength, min | 205 MPa |
| Elongation, min | 22 % |
| Hardness | 217 HBW max |