What material is 45Mn2 steel

What material is 45Mn2 steel?
45Mn2 steel is a kind of alloy structural steel. It is made of high-quality carbon structural steel with proper addition of manganese element. It belongs to the medium carbon quenched and tempered steel in alloy structural steel. The parts made of 45Mn2 steel can obtain high strength and good toughness after quenching and tempering at high temperature. That is to say, it has good comprehensive mechanical properties. It is often used to manufacture shafts, connecting rods, fasteners, etc.

Chemical composition of 45Mn2 steel:
C 0.42-0.49%, Si 0.17-0.37%, Mn1.40-1.80%.

Mechanical properties of 45Mn2 steel:
The tensile strength is 885 MPa, the yield strength is 735 MPa, the elongation after fracture is 10%, the shrinkage after fracture is 45%, and the impact absorption energy is 47J.

Application of 45Mn2 steel: it is used to manufacture various mechanical parts for heavy load work, such as crankshaft, axle, shaft, half shaft, lever, control rod, worm, piston rod, bearing bolt, screw, reinforcing ring, spring, etc.