Steel 20KHGNM
Designation
Description
20KHGNM steel is used: for the manufacture of critical parts in case hardening and an improved condition, and requirements of high strength, toughness and wear resistance; parts exposed to high vibration and dynamic loads; tools and accessories at the Volga automobile plant by type, used by «FIAT».
Note
Steel structural quality homomorphically molybdenum.
Steel can be used at temperatures from -70 to +450 °C.
Standards
Chemical composition
Fe is the basis.
According to GOST 4543-71 the content in high-quality steel is regulated: P≤0,025%; S≤0.025%; Сu≤0.30%; in high-grade steel: P≤0,025%; S≤0.015%; Сu≤0.25%.
According to TU 14-1-518-73, the total content of sulfur and phosphorus in the steel should not be more than 0.060%. In the finished rolled products, if all the requirements of the technical specifications are met, deviations from the chemical composition standards are allowed in accordance with Table 3 of GOST 4543.
According to GOST 4543-71 the content in high-quality steel is regulated: P≤0,025%; S≤0.025%; Сu≤0.30%; in high-grade steel: P≤0,025%; S≤0.015%; Сu≤0.25%.
According to TU 14-1-518-73, the total content of sulfur and phosphorus in the steel should not be more than 0.060%. In the finished rolled products, if all the requirements of the technical specifications are met, deviations from the chemical composition standards are allowed in accordance with Table 3 of GOST 4543.