Component properties and application analysis of 38CrMoAl alloy steel

38CrMoAl alloy steel has high wear resistance, high fatigue strength and high strength. Heat treatment specifications: quenched at 940℃, water-cooled, oil-cooled; tempered at 640℃, water-cooled, oil-cooled.

38CrMoAl alloy steel chemical composition:
Carbon C: 0.35-0.42
Silicon Si: 0.20 to 0.45
Manganese Mn: 0.30-0.60
Sulfur S: allowable residual content ≤ 0.035
Phosphorus P: Allowable residual content≤0.035
Chromium Cr: 1.35-1.65
Aluminum Al: 0.70 to 1.10
Nickel Ni: Allowable residual content ≤ 0.30
Copper Cu: allowable residual content ≤ 0.30
Molybdenum Mo: 0.15-0.25
38CrMoAl density: 7.85g/cm3

Mechanical properties of 38CrMoAl alloy steel:
Tensile strength σb (MPa): ≥980 (100)
Yield strength σs (MPa): ≥835 (85)
Elongation δ5 (%): ≥14
Area shrinkage ψ (%): ≥50
Impact energy Akv (J): ≥71
Impact toughness value αkv (J/cm2): ≥88
Hardness: ≤229HB
Sample size: The sample blank size is 30mm.

38CrMoAl steel equivalent material:
International standard ISO: 41CrAlMo74
Japanese JIS: SACM645
German DIN: 41CrAlMo7 34CrAlMo5
UK BS: 905M39 905M31
France NF: 40CAD6.12 30CAD6.12