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Grade SK105
Old Grade
Corresponding Standard JIS G 4401-2006
Carbon Tool Steel
Classification Tool Steel
SK105 Chemical Element Composition Content (%)
Component C Si Mn P S
Minimum Value 1 0.1 0.1 - -
Maximum Value 1.1 0.35 0.5 0.03 0.03
1 Approximate Comparison Table Carbon Tool Steel
China Japan United States International Organization for Standardization European Standard
GB ISC JIS ASTM UNS ISO EN
T10 T00100 SK105 W1-10 T72301 C105U C105U
2 Approximate Comparison Table Non-Alloy Cold-Work Tool Steels
Japan International Organization for Standardization Germany European Standard
JIS ISO DIN EN/DIN W-Nr. EN Numerical Grade
SK105
(SK3) 		C105U C105U
(C105W1) 		1.1545 C105U 1.1545
3 Approximate Comparison Table Carbon Tool Steel 1
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST BS EN/BS
T11 T00110 SK3 SK105 STC3 W1A-10 1/2 T72301 C105U C110W2 1.1654 C105U
~C105E2U 		У11-1 C105U
4 Approximate Comparison Table Carbon Tool Steel 2
China Japan United States International Organization for Standardization European Standard
GB ISC JIS ASTM UNS ISO EN Numerical Grade
T11 T00110 SK105
(SK3) 		W1A-10 1/2 T72301 C105U
(TC105) 		C105U 1.1554
SK105 Corresponding Standards(Same grade name, different standards)
1 JIS G 4401-2006
SK105 (SK3)
2 JIS G 4401-2022
SK105 (SK3)

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