– Carbon (C): 0.36-0.44%
– Manganese (Mn): 1.00-1.30%
– Silicon (Si): 0.17-0.37%
– Phosphorus (P): 0.035% maximum
– Sulfur (S): 0.035% maximum
The mechanical properties of 40Mn4 steel grade are as follows:
– Tensile Strength: 630-700 MPa
– Yield Strength: 370-500 MPa
– Elongation: 15-23%
– Hardness: 187-229 HB
These properties make 40Mn4 steel grade suitable for applications requiring moderate strength and good ductility, such as in the manufacturing of gears, crankshafts, and other components in the automotive industry.
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