42CrMo4 is a commonly used alloy steel with excellent strength and toughness. Here is the chemical composition and mechanical properties of 42CrMo4:
Chemical Composition (in weight percentage):
Carbon (C): 0.38-0.45%
Silicon (Si): 0.40%
Manganese (Mn): 0.60-0.90%
Phosphorus (P): 0.025% max
Sulfur (S): 0.035% max
Chromium (Cr): 0.90-1.20%
Molybdenum (Mo): 0.15-0.30%
Mechanical Properties:
Tensile Strength: 900-1100 MPa (Megapascals)
Yield Strength: 750 MPa min
Elongation: 14% min
Reduction in Area: 45% min
Hardness: 197-241 HB (Brinell hardness)
These values represent typical or average properties and may vary slightly depending on specific manufacturing processes and heat treatment conditions. 42CrMo4 is often utilized in applications requiring high strength, good wear resistance, and the ability to withstand high loads and stresses, such as in automotive components, heavy machinery, gears, and axles. It is crucial to refer to the relevant standards and specifications for precise information on the material's properties and appropriate heat treatment procedures to achieve desired performance.
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