Grade 42CrMo4
1.7225
Corresponding Standard NF EN 10269-1999
Classification Alloy Steel
42CrMo4 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo
Minimum Value 0.38 - 0.6 - - 0.9 0.15
Maximum Value 0.45 0.4 0.9 0.035 0.035 1.2 0.3
42CrMo4 Mechanical Properties
diameter
d
mm
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Reduction of Area
ψ
%
Hardness
HBW
Impact Energy Absorption
KV2
J
-* +S - - - - ≤255 -
-* +A - - - - ≤241 -
-* +AC ≤630 - - ≥57 - -
d≤60** +QT 860~1060 ≥730 ≥14 ≥50 - ≥50
Approximate Comparison Table
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST SS BS EN/BS
42CrMoH A30425 SCM440H SCM440H SCM440H 4140H H41400 42CrMo4H 42CrMo4 1.7225 42CrMo4
(40CD4)
≈38ХМ 2244 42CrMo4

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