Understanding the Properties and Applications of 34Cr4 Steel Grade

[ad_1] 34Cr4 is a chrome-molybdenum steel grade with a high tensile strength and good ductility. It is suitable for parts that require high wear resistance and strength, such as gears, shafts, and connecting rods.

Mechanical Properties:
– Tensile Strength: 1100-1300 MPa
– Yield Strength: 900-1100 MPa
– Elongation: 10-13%
– Hardness: 32-39 HRC

Technical Properties:
– Density: 7.85 g/cm3
– Thermal conductivity: 42 W/m·K
– Specific heat capacity: 460 J/kg·K
– Coefficient of thermal expansion: 11.7×10-6/°C

Chemical Composition:
– Carbon (C): 0.30-0.37%
– Silicon (Si): 0.40% max
– 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%

– 34Cr4 steel grade is commonly used for making components in the automotive and machinery industry, such as crankshafts, steering knuckles, and gears. Its high tensile strength and good hardenability make it suitable for applications where high mechanical properties are required. Additionally, it is also used in the manufacturing of pressure vessels, springs, and tooling components.