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T4

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T2 T12004
#T4

Description

USA ASTM T4 Tungsten series High-Speed Tool Steel and T4 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: T4
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy T4 ASTM USA Tungsten series High-Speed Tool Steel
T61202
L2
L3
T61203
T61206
L6
T1
T12001
T12002
T2

Chemical composition(mass fraction)(wt.%) of the T4

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Mo(％) V(%) W(%) Co(%)
0.70～0.80 0.20～0.40 0.10～0.40 ≤0.030 ≤0.030 3.75～4.50 0.40～1.00 0.80～1.20 17.5～19.0 4.25～5.75

Mechanical Properties of steel grade T4

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)
178 (≥) 639 (≥) 22 23 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 342

Physical Properties of steel grade T4

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
13 - -     0.23 -  
864 329 - 44.3 212   -  
117 - 14 14.2   421 131

Heat Treatment of steel grade T4

Heat treated : 1945°C - 1453°C

Technological Curves of steel grade T4

Cross Reference Table (Equivalent Grade) of T4

Grade Standard Country Application
T41902 UNS USA Alloy tool steel
T41904 UNS USA Alloy tool steel
T41905 UNS USA Alloy tool steel
T41906 UNS USA Alloy tool steel
T41907 UNS USA Alloy tool steel
T4 ASTM USA Tungsten series High-Speed Tool Steel
Stellite T40 USA Stellite alloy
SKT4 JIS Japan Hot-work die steel
ST40E JIS Japan Carbide for cutting tools
ST40E JIS Japan Carbide for cutting tools
BT4 UK Carbide for cutting tools
BT4 UK Carbide for cutting tools
BT42 UK Carbide for cutting tools
CT45 SS Sweden Carbide for cutting tools
CT45 SS Sweden Carbide for cutting tools
CT45 SS Sweden Carbide for cutting tools
CT45 SS Sweden Carbide for cutting tools
CT45 SS Sweden Carbide for cutting tools
CT45 SS Sweden Carbide for cutting tools
CT45 SS Sweden Carbide for cutting tools
T2 T12004
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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