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USA UNS G10400
AISI
American Iron and Steel Institute		 1040
SAE
Steel Number		 1040
Corresponding Standard ASTM A510/A510M-2013
Standard Specification for General Requirements for Wire Rods and Coarse Round Wire, Carbon Steel, and Alloy Steel
Classification Carbon Steel
Properties Weldability
Chemical Element Composition Content (%)
Component C Mn P S
Minimum Value 0.37 0.6 - -
Maximum Value 0.44 0.9 0.04 0.05
*The grade and composition shall comply with ASTM A1040-10(2015).
1 Approximate Comparison Table
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia United Kingdom
GB ISC CNS JIS KS ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST BS EN/BS
40 U20402 S40C S40C SM40C 1040 G10400 C40E4 C40E
Ck40 		1.1186 C40E
XC42 		40 C40E
080M40
2 Approximate Comparison Table
China Taiwan, China Japan South Korea United States International Organization for Standardization France Russia United Kingdom
GB ISC CNS JIS KS ASTM/AISI UNS ISO NF EN/NF GOST BS EN/BS
ML40 U40402 SWRCH40K SWRCH40K SWRCH40K 1040 G10400 CE40E4 XC40
FR38 		40 1/3
3 Approximate Comparison Table
United States International Organization for Standardization Germany France European Standard
ASTM ISO DIN EN/DIN NF EN/NF EN Numerical Grade
1040 C40R
C40M2 		Cm40 XC42H1u C40R 1.1189
4 Approximate Comparison Table Wrought aluminum and aluminum alloy
China Japan United States International Organization for Standardization European Standard
GB JIS ASTM UNS ISO Numerical Grade EN
1040 1040
A91040 		1040 A91040 Al99.4 A91040 EN-AW-Al99.4
5 Approximate Comparison Table
China Japan United States International Organization for Standardization Germany France European Standard Russia United Kingdom
GB JIS ASTM ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST BS EN/BS
40 S40C 1038
1040 		C40
C40E4 		C40
Ck40 		1.0511 AF60C40
AF60C45
XC42HI 		C40 1.0511 40 070M40
080M40
En8
6 Approximate Comparison Table
Japan United States International Organization for Standardization Germany France European Standard Russia United Kingdom
JIS ASTM ISO DIN EN/DIN NF EN/NF EN Numerical Grade GOST BS EN/BS
S40C 1040 C40E4 Ck40 XC42H1 C40E 1.1186 40 080M40
CS40

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