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EN 10083 42CrMo4 Steel
Executive standard: EN 10083/3-2006
Characteristics: 42CrMo4 has high strength, high hardenability, good toughness, small deformation during quenching, high creep strength and long-lasting strength at high temperatures.
42CrMo4 steel is an improved product of American AISI standard 4140 steel, and the steel has good process ability, easy polishing, easy to bite, and can be electroplated.
42CrMo4 Chemical Composition
C: 0.38~0.45
Si: ≤0.40
Mn: 0.60~0.90
S: Allowable residual content≤0.035
P: Allowable residual content≤0.035
Cr: 0.90~1.20
Mo: 0.15~0.30
Mechanical Property of 42CrMo4 Steel
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/cmsup2;): ≥78(8)
Hardness: ≤217HB
42crmo4 is an industrial material. 42CrMo4 is used in the manufacture of forgings that require higher strength and larger quenching and tempering sections than 35CrMo steel, such as large gears for locomotive traction, supercharger transmission gears, rear axles, extremely loaded connecting rods and spring clips, and 42CrMo4 also can be used in oil deep well drill pipe joints and fishing tools below 2000m.
