Technical Specifications
Chemical Composition
- Carbon (C): 0.36–0.44% – Provides core strength and hardness.
- Manganese (Mn): 0.45–0.70% – Enhances toughness and hardenability.
- Silicon (Si): 0.10–0.35% – Improves strength and machinability.
- Chromium (Cr): 1.00–1.40% – Adds wear and corrosion resistance.
- Nickel (Ni): 1.30–1.70% – Increases toughness and impact strength.
- Molybdenum (Mo): 0.20–0.35% – Provides additional hardness and temperature resistance.
- Phosphorus (P): ≤ 0.035% – Maintains ductility and toughness.
- Sulfur (S): ≤ 0.040% – Improves machinability.
Mechanical Properties
- Tensile Strength: 850–1000 MPa in tempered condition.
- Yield Strength: Approx. 650 MPa in quenched and tempered state.
- Elongation: 13% minimum.
- Impact Strength: Excellent shock resistance at low temperatures.
- Hardness (HB): 248–302 HB in tempered condition.
