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Grade T12
Corresponding Standard GB 3525-1983
Cold-Rolled Spring and Steel Strips
Classification Carbon Steel
T12 Mechanical Properties
thickness
t
mm		 Tensile Strength
σb
Mpa 		Elongation or Extension Rate
δ
%
0.10~3.00, annealed steel strip ≤735 ≥10
0.10~3.00, cold hard steel strip 735~1175
1 Approximate Comparison Table Carbon Tool Steel
China Japan United States International Organization for Standardization European Standard
GB ISC JIS ASTM UNS ISO EN
T12 T00120 SK120 W1-11 1/2 T72301 C120U C120U
2 Approximate Comparison Table Carbon Tool Steel
China Japan United States Germany France Russia United Kingdom
GB JIS ASTM DIN EN/DIN W-Nr. NF EN/NF GOST BS EN/BS
T12 SK2 W1-11 1/2 C110W2 1.1654 Y1 120 У12 BW1C
3 Approximate Comparison Table Carbon Tool Steel
China Japan South Korea United States International Organization for Standardization Germany United Kingdom
GB JIS KS ASTM ISO DIN EN/DIN BS EN/BS
T12 SK120
(SK2) 		STC2 W1A-11 1/2 TC120 C125W2 BW1C
4 Approximate Comparison Table Carbon Tool Steel
China Japan United States International Organization for Standardization Germany France European Standard Russia United Kingdom
GB JIS ASTM ISO DIN EN/DIN NF EN/NF EN GOST BS EN/BS
T12 SK120 W1A-11 1/2 C120U C120U C120U C120U У12-1 C120U
5 Approximate Comparison Table Carbon Tool Steel 1
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST SS BS EN/BS
T12 T00120 SK2 SK120 STC3 W1A-11 1/2 T72301 C120U C125W2 1.1663 C120U
~C120E3U 		У12-1 1885 C120U
(BW1C)
T12 Corresponding Standards(Same grade name, different standards)
1 GB /T 1298-2008
T12 T00120
2 GB /T 1299-2014
T12 T00120
3 NB /T 47019.3-2011
T12
4 GB 3525-1983
T12
5 YB /T 5058-2005
T12

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