4140 petroleum tube

Alloy structural steel: 4140

Executive Standard: ASTM A29/A29M-04

4140 steel has good process ability, small processing deformation, and good fatigue resistance. 4140 petroleum tube is a medium-hardening steel. 4140 has good strength and good comprehensive mechanical properties, good manufacturability and finished product rate after heat treatment.

4140 Tube 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

4140 Equivalent Material

Corresponding international standard organization number: 42CrMo4
Corresponding Japanese brand: SCM440
Corresponding to the German brand: 42CrMo4
Approximate to the US brand: 4140
Corresponding to British BS 708M40/708A42/709M40
Corresponding to French NF 40CD4/42CD4
Corresponding to China GB 42CrMo
Corresponding to Russian ГOCT 38XM