Ultra-high strength 42CrMo steel plate data sheet

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 treatment, and good low temperature impact toughness. The 42CrMo steel is suitable for the manufacture of large and medium-sized plastic molds that require certain strength and toughness.

42CrMo steel plate chemical composition:
Carbon C: 0.38-0.45%;
Silicon Si: 0.17-0.37%;
Manganese Mn: 0.50-0.80%;
Sulfur S: allowable residual content ≤ 0.035%
Phosphorus P: allowable residual content≤0.035%;
Chromium Cr: 0.90-1.20%;
Nickel Ni: Allowable residual content ≤ 0.030%
Copper Cu: allowable residual content≤0.030%;
Molybdenum Mo:0.15-0.25%

42CrMo steel plate mechanical properties:
Tensile strength σb (MPa): ≥ 1080 (110)
Yield strength σs(MPa):≥930(95)
Elongation δ5(%):≥12
Area shrinkage ψ(%): ≥45
Impact energy Akv(J):≥63
Impact toughness valueαkv(J/cm2):≥78(8)
Hardness: ≤217HB

42CrMo steel equivalent grades: ISO grade: 42CrMo4; equivalent Japanese grade: SCM440, equivalent German grade: 42CrMo4 or 1.7225; equivalent to American grade: 4140 or G41400.