Applications
- Shafts, crankshafts, and heavy machinery components.
- Gears, sprockets, and transmission components.
- High-strength bolts and fasteners.
- Parts subjected to cyclic stresses and dynamic loads.
- Tools and molds with high mechanical strength.
Characteristics:
- Alloy steel with chromium and molybdenum.
- High mechanical strength and hardness.
- Good fatigue and impact resistance.
- Hardenable through heat treatment.
- Good resistance to wear and abrasion.
- Good machinability in annealed condition.
Chemical Composition
| Variant | %(C) Carbono | %(Mn) Manganeso | %(P) Fósforo | %(S) Azufre | %(Si) Silicio | %(Cr) Cromo | %(Mo) Molibdeno |
|---|---|---|---|---|---|---|---|
| 4140 R (Round) | 0.38% - 0.43% | 0.75% - 1.00% | 0.035% Máximo | 0.24% - 0.33% | 0.15% - 0.35% | 0.80% - 1.10% | 0.15% - 0.25% |