Grade ML30CrMo
Corresponding Standard GB /T 5953.1-2009
Classification Alloy Steel
ML30CrMo Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo
Minimum Value 0.28 0.1 0.6 - - 0.9 0.15
Maximum Value 0.33 0.3 0.9 0.025 0.025 1.2 0.3
ML30CrMo Mechanical Properties
diameter
d
mm
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Reduction of Area
ψ
%
Hardness
HBW
d≤6 SALD 580~780 ≥40
6<d≤12 SALD 540~700 ≥35
12<d≤25 SALD 500~650 ≥35 HRB
≤92
d≤25 SA 450~620 ≥55 HRB
≤91
Approximate Comparison Table
China United States Germany France Russia United Kingdom
GB ISC ASTM/AISI UNS DIN EN/DIN W-Nr. NF EN/NF GOST BS EN/BS
ML30CrMo A30304 4130 G41300 ≈25CrMo4 1.7218 30CD4 30ХМА 9/0
ML30CrMo Corresponding Standards(Same grade name, different standards)

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