What material is 45Mn2 steel

What material is 45Mn2 steel?
45Mn2 steel is a kind of alloy structural steel. 45Mn2 steel is made of high-quality carbon structural steel with proper addition of manganese element. 45Mn2 steel belongs to the medium carbon quenched and tempered steel in alloy structural steel. The parts made of 45Mn2 steel can obtain good matching of high strength and good toughness after quenching and tempering at high temperature. That is to say, 45Mn2 steel 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%

The mechanical properties of 45Mn2 steel are as follows:
Tensile strength 885 MPa, yield strength 735 MPa, elongation after fracture 10%, shrinkage after fracture 45%, impact absorption energy 47J.

Application of 45Mn2 steel:
45Mn2 steel 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..