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STF4

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STF4 STF7
#STF4

Description

Korea KS STF4 Carbide for cutting tools and STF4 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: STF4
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy STF4 KS Korea Carbide for cutting tools
STD5
STD6
STD6
STD61
STD61
STD62
STD62
STF3
STF3
STF4

Chemical composition(mass fraction)(wt.%) of the STF4

C(％) Si(％) Mn(％) Cr(％) Ni(％) Mo(％) V(%)
0.50-0.60 ≤0.35　　 0.60-1.00 0.60-1.00 1.30-2.00 0.20-0.50 ＜0.20

Mechanical Properties of steel grade STF4

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)
757 (≥) 235 (≥) 42 43 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 212

Physical Properties of steel grade STF4

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 - -     0.43 -  
481 923 - 13.3 132   -  
592 - 34 43.2   233 433

Heat Treatment of steel grade STF4

Heat treated : 1614°C - 1568°C

Technological Curves of steel grade STF4

Cross Reference Table (Equivalent Grade) of STF4

Grade Standard Country Application
STF4 KS Korea Carbide for cutting tools
STF4 KS Korea Carbide for cutting tools
STF4 STF7
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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