Understanding the Chemical Composition and Mechanical Properties of 40Mn4 Steel Grade

[ad_1] The chemical composition of 40Mn4 steel grade typically includes:

– Carbon (C): 0.37-0.44%
– Silicon (Si): 0.17-0.37%
– Manganese (Mn): 1.10-1.40%
– Phosphorus (P): 0.04% max
– Sulfur (S): 0.04% max

The mechanical properties of 40Mn4 steel grade are:

– Tensile Strength: 650-800 MPa
– Yield Strength: 450 MPa
– Elongation: 17%
– Impact Energy: 55J at 20°C

These properties make 40Mn4 steel grade suitable for various applications requiring high strength and good ductility, such as in the manufacturing of gears, shafts, and components for heavy machinery.