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USA UNS G10450
AISI
American Iron and Steel Institute		 1045
Corresponding Standard ASTM A29/A29M-2012
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 0.43 0.6 - - ①②③④⑤
Maximum Value 0.5 0.9 0.04 0.05
1 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
45 U20452 S45C S45C SM45C 1045 G10450 C45E4 C45E
Ck45 		1.1191 C45E
XC48 		45 1660 C45E
080M46
2 Approximate Comparison Table Non-Alloy Steel for Quenching and Tempering
United States International Organization for Standardization Germany France European Standard
ASTM ISO DIN EN/DIN NF EN/NF EN Numerical Grade
1045 C45R
C45M2 		Cm45 XC48H1u C45R 1.1201
3 Approximate Comparison Table High-Quality Carbon Structural Steel
China Japan United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB JIS ASTM ISO DIN EN/DIN NF EN/NF EN Numerical Grade GOST SS BS EN/BS
45 S45C 1042
1045
Gr.1043 		C45 C45 AF65C45
C45 		C45 1.0503 45 1650 070M46
50HS
4 Approximate Comparison Table High-Quality Carbon Structural Steel
China Japan United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB JIS ASTM ISO DIN EN/DIN NF EN/NF EN Numerical Grade GOST SS BS EN/BS
45H
45 		S45C 1045 C45E4 Ck45 XC45
XC48H1 		C45E 1.1191 45 1672 080M46
CFS8
5 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion
China Japan United States International Organization for Standardization European Standard
YB GB JIS ASTM ISO EN
QML45 ML45 SWRCH45K 1045 C45EC C45EC

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