Grade 41CrAlMo 74
Corresponding Standard ISO 683-10(1987)
Heat-treatable steels, alloy steels and free-cutting steels Part 10: Wrought nitriding steels
Classification Alloy Steel
41CrAlMo 74 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo Al
Minimum Value 0.38 - 0.5 - - 1.5 0.25 0.8
Maximum Value 0.45 0.5 0.8 0.03 0.035 1.8 0.4 1.2
41CrAlMo 74 Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
Impact Energy Absorption
KV2
J
Bars, Coils, Semi-finished Products, Plates, Hammer Forged and Die Forged Pieces Annealing (A) - - - ≤262 -
Bars, Coils, Semi-finished Products, Plates, Hammer Forged and Die Forged Pieces; d≤100 Quenching and tempering (QT) 900~1100 ≥700 ≥12 HV
950
Charpy U Notch
≥20
Bars, Coils, Semi-finished Products, Plates, Hammer Forged and Die Forged Pieces; 100<d≤160 Quenching and tempering (QT) 800~1000 ≥600 ≥14 950 ≥25

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