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STD4

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STD4 STD5
#STD4

Description

Korea KS STD4 Carbide for cutting tools and STD4 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: STD4
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy STD4 KS Korea Carbide for cutting tools
STS94
STS95
STS95
STD1
STD1
STD11
STD11
STD12
STD12
STD4

Chemical composition(mass fraction)(wt.%) of the STD4

C(％) Si(％) Mn(％) Cr(％) V(%) W(%)
0.25-0.35 ≤0.40 ≤0.60 2.00-3.00 0.30-0.50 5.00-6.00

Mechanical Properties of steel grade STD4

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)
588 (≥) 122 (≥) 43 22 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 233

Physical Properties of steel grade STD4

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
34 - -     0.11 -  
849 182 - 32.3 223   -  
722 - 41 21.2   241 443

Heat Treatment of steel grade STD4

Heat treated : 1943°C - 1919°C

Technological Curves of steel grade STD4

Cross Reference Table (Equivalent Grade) of STD4

Grade Standard Country Application
STD4 KS Korea Carbide for cutting tools
STD4 KS Korea Carbide for cutting tools
STD4 STD5
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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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