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BT4

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BT4 BT6
#BT4

Description

UK BT4 Carbide for cutting tools and BT4 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: BT4
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy BT4 UK Carbide for cutting tools
:BP30
BS1
BS1
BS2
BS2
BT1
BT1
BT2①
BT2①
BT4

Chemical composition(mass fraction)(wt.%) of the BT4

C(％) Si(％) Mn(％) Cr(％) Ni(％) Mo(％) V(%) W(%) Co(%) Other(%)
0.75-0.85 ≤0.40 ≤0.40 3.75-4.50 ≤0.40 ≤1.00 1.75-2.05 18.5-19.5 9.00-10.0 Cu≤0.20,Sn≤0.05

Mechanical Properties of steel grade BT4

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)
511 (≥) 526 (≥) 22 14 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade BT4

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
41 - -     0.12 -  
612 929 - 13.3 423   -  
415 - 33 43.2   224 221

Heat Treatment of steel grade BT4

Heat treated : 1427°C - 1245°C

Technological Curves of steel grade BT4

Cross Reference Table (Equivalent Grade) of BT4

Grade Standard Country Application
BT4 UK Carbide for cutting tools
BT4 UK Carbide for cutting tools
BT42 UK Carbide for cutting tools
BT4 BT6
Available Suppliers
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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