Applications
- Structural components subjected to high stresses, such as shafts, axles, and heavy machinery parts.
- Parts for transmission systems such as gears and drive shafts.
- Hot-working tools.
- Automotive industry parts, such as engine shafts and suspension components.
- Components for mining and construction machinery.
- Machinery parts requiring excellent impact and wear resistance.
Characteristics:
- Chromium-nickel-molybdenum alloy steel.
- High-strength and tough steel, suitable for applications with heavy loads.
- Excellent wear resistance in applications requiring high durability.
- Good hardenability after heat treatment.
- Moderate corrosion resistance in controlled environments.
- Good machinability in annealed condition.
Chemical Composition
| Variant | %(C) Carbono | %(Mn) Manganeso | %(P) Fósforo | %(S) Azufre | %(Si) Silicio | %(Cr) Cromo | %(Ni) Níquel | %(Mo) Molibdeno |
|---|---|---|---|---|---|---|---|---|
| 9840 R (Round) | 0.38% - 0.44% | 0.60% - 0.90% | 0.035% Máximo | 0.035% Máximo | 0.37% - 0.45% | 1.33% - 1.45% | 0.40% - 0.70% | 0.15% - 0.25% |