Mechanical Properties:
– Tensile strength: 800-1000 MPa
– Yield strength: 650-850 MPa
– Elongation: 12-16%
– Hardness: 250-300 HB
These mechanical properties make 42Cr4 steel suitable for applications requiring high strength and good impact resistance, such as gears, shafts, and piston rods in the automotive and aerospace industries.
Chemical Composition:
– Carbon (C): 0.39-0.45%
– 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): 0.15-0.25%
The chemical composition of 42Cr4 steel provides it with the necessary alloying elements to achieve the desired mechanical properties, such as high strength and hardenability.
Applications:
– Automotive components: 42Cr4 steel is commonly used in the manufacturing of gears, shafts, and other automotive components due to its high strength and fatigue resistance.
– Aerospace components: Its good combination of strength and toughness makes it suitable for use in aerospace components such as landing gear parts and engine components.
– General engineering applications: It can also be used in various general engineering applications where high strength and wear resistance are required.
In conclusion, the mechanical properties and chemical composition of 42Cr4 steel make it a versatile material for various engineering applications, particularly where high strength, toughness, and wear resistance are necessary.
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