– Tensile strength: 900 – 1100 MPa
– Yield strength: 650 – 800 MPa
– Elongation: 15 – 17%
– Hardness: 160 – 220 HB
Technical Properties:
– Density: 7.85 g/cm3
– Thermal conductivity: 42 W/(m·K)
– Specific heat capacity: 460 J/(kg·K)
– Thermal expansion: 11.5 x 10^-6 /K
Chemical Composition:
– Carbon (C): 0.38 – 0.45%
– Silicon (Si): 0.40%
– Manganese (Mn): 0.60 – 0.90%
– Phosphorus (P): 0.035% max
– Sulfur (S): 0.035% max
– Chromium (Cr): 0.90 – 1.20%
– Molybdenum (Mo): 0.15 – 0.30%
Applications:
42CrMo4 steel grade is commonly used for various applications such as:
– Manufacturing of heavy machinery and equipment
– Automotive and aerospace components
– Oil and gas industry components
– Construction and engineering components
– Power generation equipment
This steel grade is known for its high tensile strength, toughness, and durability, making it suitable for use in demanding and high-stress applications. Its good hardenability and high fatigue strength also make it an ideal choice for applications that require strong and tough materials.
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