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USA UNS G10200
SAE
Steel Number		 1020
Corresponding Standard SAE J 403-2001
Chemical Compositions of Carbon Steels
Classification Carbon Steel
Properties Impact Toughness Forgability Weldability Carburizing Ability
Chemical Element Composition Content (%)
Component C Mn P S Cu
Minimum Value 0.18 0.3 - - -
Maximum Value 0.23 0.6 0.03 0.05 0.2
New and Old Grade Replacement List
Corresponding Standard Grade
SAE J 403-2001
USA UNS
SAE
SAE J403-2014
Grade
USA UNS
1 Approximate Comparison Table High-Quality Carbon Structural Steel
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 Cold Heading Steel
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 High-Quality Carbon Structural Steel
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

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