USA UNS G10220
AISI
American Iron and Steel Institute
C1022
ASTM
Specification or Grade
1022
Corresponding Standard ASTM A29/A29M-2012
Standard Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
Classification Carbon Steel
Properties Weldability
Chemical Element Composition Content (%)
Component C Mn P S More
Minimum Value 0.18 0.7 - - ①②③④⑤
Maximum Value 0.23 1 0.04 0.05
1 Approximate Comparison Table High-Quality Carbon Structural Steel
China United States Germany France Russia Sweden United Kingdom
GB ISC ASTM/AISI UNS DIN EN/DIN W-Nr. NF EN/NF GOST SS BS EN/BS
20Mn U21202 1022 G10220 21Mn4 1.0470 20M5 20г 1434 080A20
2 Approximate Comparison Table
China Japan United States International Organization for Standardization Germany European Standard
GB ISC JIS ASTM ISO DIN EN/DIN W-Nr. EN Numerical Grade
ML20Mn U41208 SWRCH22A 1022 CE20E4 C17E2C 1.1147 C17E2C 1.1147

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