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USA UNS G10200
AISI
American Iron and Steel Institute		 1020
Corresponding Standard ASTM A29/A29M-2012
Standard Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
Classification Carbon Steel
Properties Impact Toughness Forgability Weldability Carburizing Ability
Chemical Element Composition Content (%)
Component C Mn P S More
Minimum Value 0.18 0.3 - - ①②③④⑤
Maximum Value 0.23 0.6 0.04 0.05
1 Approximate Comparison Table
China Taiwan, China Japan South Korea United States Germany France Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM/AISI UNS DIN EN/DIN W-Nr. NF EN/NF GOST SS BS EN/BS
20 U20202 S20C S20C SM20C 1020 G10200 C22E
Ck22 		1.1151 C22E
XC18 		20 1435 C22E
070M20
2 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
ML20 U40202 SWRCH20K SWRCH20K SWRCH20K 1020 G10200 CC21A
(A5Al) 		Cq22
(C22C) 		1.1152 XC18
FR20 		20nc 0/4
3 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
ML20Al U40208 SWRCH20A 1020 CC21A C20C 1.0411 C20C 1.0411
4 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
ML20 U40202 SWRCH20K 1020 CC21K C20C 1.0411 C20C 1.0411
5 Approximate Comparison Table
China Japan United States International Organization for Standardization Germany European Standard Russia Sweden United Kingdom
GB JIS SAE ISO DIN EN/DIN W-Nr. EN Numerical Grade GOST SS BS EN/BS
20 S20C
S22C 		1020 C25 C22 1.0402 C22 1.0402 20 1450 070M20
6 Approximate Comparison Table
Japan United States Germany France European Standard Russia United Kingdom
JIS ASTM DIN EN/DIN NF EN/NF EN Numerical Grade GOST BS EN/BS
S20C 1020 Ck22 XC18 C22E 1.1151 20 070M20
CS22
7 Approximate Comparison Table
China Japan South Korea United States International Organization for Standardization Germany United Kingdom
GB JIS KS ASTM ISO DIN EN/DIN BS EN/BS
ML20 SWRCH20K SWCH20K 1020 CC21A Cp22 0/4

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