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Steel 4140

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Details of Steel 4140

Alternative NamesMechanical PropertiesPhysical PropertiesThermal PropertiesElectrical PropertiesPost TreatmentsCommon ApplicationsOther Details
ASTM A29/A29M, UNS G41400, DIN 1.7225, GB 42CrMo, JIS SCM440CYield Strength: 655 MPa (95,000 psi) Tensile Strength: 710 MPa (103,000 psi) Elongation: 25% Reduction in Area: 50%Density: 7.85 g/cm³ (0.284 lb/in³) Melting Point: 1416°C (2581°F)Thermal Conductivity: 42.7 W/mK (296 BTU in/hr.ft².°F) Specific Heat Capacity: 460 J/kg.°C (0.11 BTU/lb.°F)Electrical Conductivity: 11% IACSQuenching and Tempering, Normalizing, Annealing, Case HardeningAxles, Bolts, Crankshafts, Gears, Pinions, Shafts, Spindles, StudsThis alloy steel is versatile and commonly used in a variety of industries including automotive, aerospace, and oil and gas. It is known for its high strength, toughness, and resistance to wear and fatigue. Variations in alloy composition can affect the material's properties.

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