Understanding the Properties and Applications of 36CrNiMo4 Steel Grade

[ad_1] 36CrNiMo4 is a low-alloy steel known for its toughness, high tensile strength, and good fatigue resistance. It is commonly used in the manufacturing of gears, shafts, and other components for the automotive and aerospace industries. Understanding the mechanical, technical, and chemical properties of 36CrNiMo4 is crucial for its successful application in various engineering projects.

Mechanical Properties:
– Tensile Strength: 1100-1300 MPa
– Yield Strength: 900-1100 MPa
– Elongation: 10-13%
– Hardness: 30-36 HRC
– Impact Strength: 27 J at -20°C

Technical Properties:
– Density: 7.85 g/cm3
– Thermal Conductivity: 42 W/mK
– Specific Heat Capacity: 460 J/kg·K
– Coefficient of Thermal Expansion: 11.5 x 10-6/K

Chemical Composition:
– Carbon (C): 0.32-0.40%
– Silicon (Si): 0.40% max
– Manganese (Mn): 0.5-0.8%
– Phosphorus (P): 0.025% max
– Sulfur (S): 0.035% max
– Chromium (Cr): 0.9-1.2%
– Nickel (Ni): 0.9-1.2%
– Molybdenum (Mo): 0.15-0.30%

– 36CrNiMo4 steel is widely used in the production of gears, crankshafts, and other high-stress components in the automotive and aerospace industries.
– It is also used in the manufacturing of heavy-duty machinery, such as shafts and axle shafts, due to its high tensile strength and good fatigue resistance.
– The steel grade is suitable for quenching and tempering processes, making it ideal for applications requiring high strength and toughness.

Understanding the properties and applications of 36CrNiMo4 steel grade is essential for engineers and manufacturers to make informed decisions about its suitability for specific engineering applications and to ensure the quality and performance of the final products.