USA UNS G41300
AISI
American Iron and Steel Institute
4130
Corresponding Standard ASTM A29/A29M-2020
General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
Classification Alloy Steel
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo
Minimum Value 0.28 0.15 0.4 - - 0.8 - - 0.15
Maximum Value 0.33 0.35 0.6 0.035 0.04 1.1 0.25 0.35 0.25
Approximate Comparison Table Cold Heading Steel
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

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