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Grade T11
China ISC T10010
Corresponding Standard GB /T 1299-2025
Tool and Mould Steels
Classification Tool Steel
T11 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Cu More
Minimum Value 1.05 0.17 0.1 - - - - Cu+Ni≤0.55
Maximum Value 1.14 0.37 0.4 0.03 0.025 0.3 0.25
T11 Mechanical Properties
condition Heat Treatment or Condition
Hardness
HBW
Delivery condition Annealing ≤207
Specimen Quenching at 760-780°C, water cooling HRC
≥62
New and Old Grade Replacement List
Corresponding Standard Grade
GB /T 1299-2014
Grade
China ISC
GB /T 1299-2025
Grade
China ISC
1 Approximate Comparison Table Carbon Tool Steel
China United States
GB ISC ASTM UNS
T11 T00110 W1-11 T72301
2 Approximate Comparison Table Carbon Tool Steel
China Japan United States Germany Russia
GB JIS ASTM DIN EN/DIN W-Nr. GOST
T11 SK3 W1-10 1/2 C110W2 1.1654 У11
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
T11 Corresponding Standards(Same grade name, different standards)
1 GB /T 1298-2008
T11 T00110
2 GB /T 1299-2014
T11 T00110
3 GB 3525-1983
T11
4 YB /T 5058-2005
T11
5 GB /T 1299-2025
T11 T10010

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