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SK4

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SK4 SKS95
#SK1

Description

China CNS SK4 Carbide for cutting tools and SK4 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: SK4
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy SK4 CNS China Carbide for cutting tools
HS6-5-3
HS6-5-3C
HS6-5-3C
HS6-6-2
HS6-6-2
HS6-5-2-5
HS6-5-2-5
HS6-5-3-8
HS6-5-3-8
SK4

Chemical composition(mass fraction)(wt.%) of the SK4

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Cu(%)
0.90-1.00 ≤0.35 ≤0.50 ≤0.03 ≤0.03 ≤0.20 ≤0.25 ≤0.30

Mechanical Properties of steel grade SK4

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)
695 (≥) 747 (≥) 41 34 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade SK4

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 - -     0.24 -  
449 112 - 13.3 122   -  
439 - 41 33.2   323 123

Heat Treatment of steel grade SK4

Heat treated : 1279°C - 1525°C

Technological Curves of steel grade SK4

Cross Reference Table (Equivalent Grade) of SK4

Grade Standard Country Application
SK140 JIS Japan Carbon tool steel
SK1 JIS Japan Carbon tool steel
SK120 JIS Japan Carbon tool steel
SK105 JIS Japan Carbon tool steel
SK4 CNS China Carbide for cutting tools
SK4 CNS China Carbide for cutting tools
SK4 SKS95
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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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