USA UNS G10550
AISI
American Iron and Steel Institute
1055
Corresponding Standard ASTM A29/A29M-2012
Standard Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
Classification Carbon Steel
Chemical Element Composition Content (%)
Component C Mn P S More
Minimum Value 0.5 0.6 - - ①②③④⑤
Maximum Value 0.6 0.9 0.04 0.05
Approximate Comparison Table High-Quality Carbon Structural Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST SS BS EN/BS
55 U20552 S55C S55C SM55C 1055
(ASTM)
G10550 C55E4 C55E
Ck55
1.1203 C55E
XC55
55 1665 C55E
070M55

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