United Kingdom · B.S.
623
BS 1504
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.25 | |||
| Cr | 2.5 | 3.5 | ||
| Cu | 0.3 | |||
| Mn | 0.3 | 0.7 | ||
| Mo | 0.35 | 0.6 | ||
| Ni | 0.4 | |||
| P | 0.04 | |||
| S | 0.04 | |||
| Si | 0.75 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| castings, normalized and tempered | ≥370 Lower Yield Stress | ≥620 | ≥13 | ≥25 Charpy V Notch | HB 179–255 |