Specifications

1.4140
1.4140/1.7225/42CrMo4
2.hot rolled,annealing or pre-hardened
3.steel sheet/flat/round bar
4.black

1.4140

SCM440 Alloy Steel

Similar Grade
42CrMo(GB) 42CrMo4 or 1.7225 (DIN) 4140 or G41400 (SAE)
Brief Introduction
SCM440 belong to ultrahigh strength steel, have high strength and toughness, its quench-hardening ability is better also, no clear brittleness, have higher fatigue limit and higher repeated impact resistance ability after quenching and tempering treatment.
Chemical Composition:
C: 0.38-0.45%
Si: 0.15-0.35%
Mn: 0.50-0.80%
S ≤ 0.030%
P ≤ 0.030%
Cr: 0.90-1.20%
Ni≤ 0.030%
Cu≤ 0.030%
Mo: 0.15-0.25%
Mechanical Property:
Yield Strength (MPa): ≥ 930
Tensile Strength (MPa): ≥ 1080
Elongation (%): ≥ 12
HBS≤ 217HB
Delivery Condition:
Quenching+Tempering
Payment Terms:
L/C, T/T