| Customization: | Available |
|---|---|
| Processing Object: | Metal |
| Molding Style: | Forging |
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| GB | DIN | AISI | JIS |
| 42CrMo | 1.7225 | 4140 | SCM440 |
| C | Si | Mn | Cr | Mo | P | S |
| 0.38-0.43 | 0.40max | 0.60-0.90 | 0.90-1.20 | 0.15-0.30 | ≤0.035 | ≤0.035 |
| Round steel bar 60-800mm |
| Flat steel bar 25-400mm*200-800mm |
| Black surface/ Grinded/ Machined |
| Annealed HBS 217 max |
| 4140 Alloy Steel/SAE 4140 Steel Price is engineering steel supplied in quenched and tempered conditions. Very good machinability. High toughness. High creep strength. Repeated impact resistant capability. |
| 4140 Alloy Steel/SAE 4140 Steel Price is use to produce components with high requirements on toughness, e.g. gear wheels, pinions, connecting rods, parts for mechanical engineering . |
| Forging | Heat to 1150°C. Hold until uniform. Minimum forging temperature 850°C.Cool slowly in ashes or sand etc. |
| Annealing | Heat to 830°C-850°C.Cool in furnace. |
| Normalizing | Heat to 870°C-900°C.Cool in still air. |
| Stress Relieving | Annealed: Heat to 600°C-650°C.Hardened: Heat to 500°C-550°C.Cool in still air. |
| Hardening | Heat to 830°C-880°C. Quench in oil or polymer. |
| Tempering | Heat to 450°C-700°C cool in still air. NB. Tempering within the range 200°C-420°C will result in temper brittleness and should be avoided. |
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