What are the properties of 42Cr2Mo alloy?

42CrMo steel alloy has high strength, hardenability, good toughness, small deformation during quenching, and high creep strength and enduring strength at high temperatures. 42CrMo alloy is used to manufacture forgings that require higher strength and a larger quenched and tempered section than 35CrMo steel, such as large gears for locomotive traction, supercharger transmission gears, pressure vessel gears, rear axles, connecting rods with extremely high loads, and Spring clip. In addition, it can also be used for oil deep well drill pipe joints and fishing tools under 2000m, and can be used for molds of bending machines.

42CrMo steel chemical composition

Carbon: 0.38～0.45%

Silicon: 0.17～0.37%

Manganese: 0.50～0.80%

Sulfur: ≤0.035%

Phosphorus: ≤0.035%

Chromium: 0.90～1.20%

Nickel: ≤0.030%

Copper: ≤0.030%

Molybdenum: 0.15～0.25%

42Cr2Mo alloy is an ultra-high strength steel with high strength and toughness, good hardenability, no obvious temper brittleness, small deformation during quenching, high fatigue limit and multiple impact resistance after quenching and tempering. It has good impact toughness at low temperature, high creep strength and enduring strength at high temperature.