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Grade T8
Corresponding Standard GB 3525-1983
Cold-rolled spring and steel strips
Classification Carbon Steel
T8 Mechanical Properties
thickness
t
mm		 Tensile Strength
σb
Mpa 		Elongation or Extension Rate
δ
%
t ≤ 1.5, annealed steel strip ≤635 ≥20
t > 1.5, annealed steel strip ≤735 ≥15
Cold-Hard Steel Strip 735~1175
1 Approximate Comparison Table
China Japan International Organization for Standardization European Standard
GB ISC JIS Numerical Grade EN
T8 T00080 SK80 C80U C80U
2 Approximate Comparison Table Non-alloy cold-work tool steels
China Japan Germany France European Standard Russia United Kingdom
GB JIS DIN EN/DIN NF EN/NF EN Numerical Grade GOST BS EN/BS
T8 SK5
SK6 		C80W1
C80W2 		Y180 C80U 1.1525 U8 BW1A
3 Approximate Comparison Table
China Japan United States International Organization for Standardization Germany France Russia
GB ISC JIS ASTM ISO DIN EN/DIN W-Nr. NF EN/NF GOST
T8 T00080 SK6 W1-0.8C TC80 C80W1 1.1525 Y1 80 У8
4 Approximate Comparison Table
China Japan South Korea United States International Organization for Standardization Germany
GB JIS KS ASTM ISO DIN EN/DIN
T8 SK5
SK6 		STC5
STC6 		W1A-8 TC80 C80W2
5 Approximate Comparison Table
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia Sweden United Kingdom
GB ISC CNS JIS KS Commercial Grade ISO DIN EN/DIN W-Nr. NF EN/NF GOST SS BS EN/BS
T8 T00080 SK 6 SK 80 STC 6 W1A-8 C80U C80W2 1.1625 C80U
C80E2U 		У8-1 1778 C80U
T8 Corresponding Standards(Same grade name, different standards)
1 GB /T 1298-2008
T8 T00080
2 GB /T 1299-2014
T8 T00080
3 ASTM A600-1992(R2010)
T8 A600 T8 T12008
4 GB 3525-1983
T8
5 YB /T 5058-2005
T8
6 HB /Z 136-2000
T8

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