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Grade 30CD4
Corresponding Standard NF A 35-556-1984
Steel for Threaded Fasteners for Structural and Engineering Purposes
Classification Alloy Steel
30CD4 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo
Minimum Value 0.27 0.1 0.6 - - 0.9 0.15
Maximum Value 0.33 0.4 0.9 0.035 0.035 1.2 0.25
1 Approximate Comparison Table Structural Alloy Steel
China Taiwan, China Japan South Korea United States France European Standard
GB ISC CNS JIS KS ASTM NF EN/NF EN
30CrMo A30302 SCM430 SCM430 SCM430 4130 30CD4 34CrMo4
2 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
30CD4 Corresponding Standards(Same grade name, different standards)
1 NF A 35-557-1983
30CD 4
2 NF A 35-556-1984
30CD4

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