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Description

China T8 Carbon tool steel and T8 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: T8

Chemical composition(mass fraction)(wt.%) of the T8

C(%) Si(%) Mn(%) P(%) S(%)
0.75~0.84 ≤0.35 ≤0.40 ≤0.035 ≤0.030

Mechanical Properties of steel grade T8

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
969 (≥) 585 (≥) 14 42 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 213

Physical Properties of steel grade T8

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
23 - -     0.31 -  
739 576 - 14.3 134   -  
866 - 14 14.2   311 343

Heat Treatment of steel grade T8

Heat treated : 1234°C - 1338°C

Technological Curves of steel grade T8

Cross Reference Table (Equivalent Grade) of T8

Grade Standard Country Application
T8 China Carbon tool steel
T8Mn China Carbon tool steel
GT88 AFNOR France Carbide for cutting tools
GT88 AFNOR France Carbide for cutting tools
CT85 SS Sweden Carbide for cutting tools
CT85 SS Sweden Carbide for cutting tools
T8MoNiCrlZ5 STAS/SR Romania Cast Steel

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