Grade 41CrAlMo7-10
European Standard Steel Grade 1.8509
Corresponding Standard EN 10085-2001
Nitriding Steels. Technical Delivery Conditions
Classification Alloy Steel
41CrAlMo7-10 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo Al
Minimum Value 0.38 - 0.4 - - 1.5 0.2 0.8
Maximum Value 0.45 0.4 0.7 0.025 0.035 1.8 0.35 1.2
41CrAlMo7-10 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, flat products, forgings; 16≤d≤40 Quenching and Tempering (+QT) 950~1150 ≥750 ≥11 - ≥25
Bars, flat products, forgings; 40<d≤100 Quenching and Tempering (+QT) 900~1100 ≥720 ≥13 - ≥25
Bars, flat products, forgings; 100<d≤160 Quenching and Tempering (+QT) 850~1050 ≥670 ≥14 - ≥30
Bars, flat products, forgings; 160<d≤250 Quenching and Tempering (+QT) 800~1000 ≥625 ≥15 - ≥30
Bars, rods, flat products, forgings, semifinished products Soft Annealing (+A) - - - ≤248 -
Nitriding - - - HV*
950
-
Approximate Comparison Table Nitriding Steels
China Japan International Organization for Standardization European Standard
GB JIS ISO EN Numerical Grade
38CrMoAl SACM645 41CrAlMo7-10 41CrAlMo7-10 1.8509
41CrAlMo7-10 Corresponding Standards(Same grade name, different standards)

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