Alloy steel castings
ASTM A217 C5 — chemistry & properties
ASTM A217 C5 (Alloy steel castings, UNS J42045): chemical composition and mechanical properties. 5Cr-½Mo valve bodies for refinery service
Chemical composition (wt %)
| C | ≤ 0.2 |
| Mn | 0.4 – 0.7 |
| P | ≤ 0.04 |
| S | ≤ 0.045 |
| Si | ≤ 0.75 |
| Cr | 4 – 6.5 |
| Mo | 0.45 – 0.65 |
Mechanical properties
| Tensile strength, min | 620 MPa |
| Yield strength, min | 415 MPa |
| Elongation, min | 18 % |
| Hardness | Not specified |