| C | Cr | Ni | Fe | Mn | Si | Mo | Cu | P | S | Ti | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | . | 23 | 47 | . | . | . | 5.0 | 0.70 | . | . | 0.70 |
| Max | 0.03 | 26 | 52 | Bal | 1.0 | 1.0 | 7.0 | 1.20 | 0.03 | 0.03 | 1.50 |
| Grade | Yield Strength | Tensile Strength | Elongation(%) | Hardness(HRC) | |
|---|---|---|---|---|---|
| Min | Max | ||||
| 110 | 110KSI (758Mpa) | 140KSI (965Mpa) | ≥115KSI (793Mpa) | 11 | ≤35 |
| 125 | 125KSI (862Mpa) | 150KSI (1034Mpa) | ≥130KSI (896Mpa) | 10 | ≤37 |