20CrNiMo round

20CrNiMo formerly US Steel AISI, SAE 8720 steel standard. Hardenability performance 20CrNi steel similar. Although Ni content of the steel half 20CrNi steel, but because of a small amount of Mo elements, so that the upper part of the austenite isothermal transformation curve to the right; because an appropriate increase in Mn content, resulting in the steel hardenability still good strength is higher than 20CrNi steel. Commonly used in the manufacture of small and medium sized cars, tractors and engine and transmission in gear; 12CrNi3 can replace steel core part requires higher performance carburizing parts, cyanide parts, such as oil drilling and metallurgical open pit with cone bit cone body claws and teeth. 20CrNiMo due to the presence of molybdenum in addition to have a good overall performance but also the ability of certain outside temperature. For the manufacture of turbine rotor gear entire engine connecting rods and valve section forgings.