20MnCr5

20MnCr5 is a low alloy steel suitable for case hardening. After case hardening, the steel has a tough core and the surface becomes wear resistant."20" in 20MnCr5 refers to the average carbon content which is usually in the range of 0.17 - 0.22%, "Mn" stands for manganese which contributes to hardenability and strength and "Cr" for chromium which improves hardenability, wear resistance and corrosion resistance. These additions of alloying elements make the steel suitable for heat treatment processes such as case hardening.20MnCr5 typically has a tensile strength in the range of 780 MPa to 1080 MPa. After appropriate heat treatment, 20MnCr5 steel can achieve high surface hardness, making it suitable for wear-resistant applications.20MnCr5 exhibits good machinability and weldability but cracks can occur at the weld seam. Good resistance to wear and fatigue. It can be used in both low and high temperatures and can withstand moderate to high levels of stress.20MnCr5 is widely used in the manufacture of gears, shafts and other components in machinery. Often used in the automotive industry.