42CrMo Alloy Structural Steel Official Price

42CrMo steel is an ultra-high-strength steel with high strength and toughness, good hardenability, no obvious temper brittleness, high fatigue limit and multiple impact resistance after quenching and tempering. 42CrMo is suitable for manufacturing large and medium-sized plastic molds requiring a certain strength and toughness.

Equivalent Material of 42CrMo

China Executive Standard GB/T 3077-1999
Its corresponding international standard organization number: 42CrMo4
Corresponding Japanese brand: SCM440
Corresponding to the German brand: 42CrMo4 or 1.7225
Approximate to the US brand: 4140 or G41400

42CrMo Steel Scope of application

42CrMo steel has high strength, hardenability, good toughness, small deformation during quenching, high creep strength and long-lasting strength at high temperatures. Forgings requiring higher strength and larger quenching section than 35CrMo steel, such as large gears for locomotive traction, supercharger transmission gears, pressure vessel gears, rear axles, extremely loaded connecting rods and spring clips It can also be used for oil deep well drill pipe joints and fishing tools below 2000m, and can be used for molds of bending machines.

Chemical Composition of 42CrMo Steel

C: 0.38~0.45%
Si: 0.17~0.37%
Mn: 0.50~0.80%
Cr: 0.90~1.20%
Mo: 0.15~0.25%

42CrMo Alloy Steel Mechanical Property

Tensile strength σb (MPa): ≥ 1080 (110)
Yield strength σs (MPa): ≥ 930 (95)
Elongation δ5 (%): ≥12
Area shrinkage ψ (%): ≥ 45
Impact work Akv (J): ≥ 63
Impact toughness value αkv (J/cm2): ≥78(8)
Hardness: ≤217HB
Sample size: sample blank size is 25mm

42Cr2Mo steel is ultra-high strength steel with high strength and toughness, good hardenability, no obvious temper brittleness, small deformation during quenching, high fatigue limit and resistance to multiple impacts after quenching and tempering treatment. 42Cr2Mo alloy steel also has Low temperature impact toughness, high creep strength and long-lasting strength at high temperatures. 42CrMo Alloy Structural Steel steel usually has a surface quenching after quenching and tempering as a heat treatment scheme.