– Tensile Strength: 850-1000 MPa
– Yield Strength: 680-800 MPa
– Elongation: 12-16%
– Reduction of Area: 50-60%
– Hardness: 250-300 HB
Technical Properties of 40NiCrMo2 KB Steel Grade:
– Heat Treatment: Annealing, quenching, and tempering
– Weldability: Good
– Machinability: Good
– Ductility: High
– Fatigue Strength: Good
Chemical Composition of 40NiCrMo2 KB Steel Grade:
– Carbon (C): 0.35-0.45%
– Silicon (Si): 0.17-0.37%
– Manganese (Mn): 0.50-0.80%
– Phosphorus (P): 0.025% max
– Sulfur (S): 0.035% max
– Chromium (Cr): 0.90-1.20%
– Nickel (Ni): 1.40-1.70%
– Molybdenum (Mo): 0.15-0.25%
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