Related Specifications
| Germany | 1.7225 |
| USA | 4140 |
| GB | 42CrMo |
| Sweden | 2244 |
| Japan | SCM440 |
Chemical Analysis
| C % | Mn % | Si % | Cr % | Mo % |
| 0.37-0.44 | 0.5-0.8 | 0.17-0.37 | 1.0-1.2 | 0.2-0.4 |
Delivery condition: Hot rolled, hot forging, annealed, normalized
Hardness: HB180-230, HRC 28-35
Size availability
| Type | Thickness mm | Width/Diameter mm | Length mm |
| Flat | 20-400 | 200-2000 | 2000-6000 |
| Round bar |
| 20-800 | 2000-10000 |
Main Feature:
Hardness is uniform, the center and surface polishing property is +/- 2 ? when thickness is below 700 mm.
Good mechanical property and can be imposed of nitrogenization.
Normally be used after hardening and tempering.
Application:
| For mechanical parts manufacturing like axle, gear, connecting rod, transmission gear, supercharger gear, motor cylinder stator, spring and pinch cock. |
| 1200-2000mm steel for petroleum drill pipes |
| Jar knocker |
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