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SKT4

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SKT3 SKT6
#SKT4

Description

Japan JIS SKT4 Hot-work die steel and SKT4 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: SKT4
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy SKT4 JIS Japan Hot-work die steel
SKD11
SKD12
SKD4
SKD5
SKD6
SKD61
SKD62
SKD7
SKD8
SKT3

Chemical composition(mass fraction)(wt.%) of the SKT4

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Mo(％) V(%)
0.50-0.60 0.10-0.40 0.60-0.90 Max 0.030 Max 0.020 0.80-1.20 0.35-0.55 0.05-0.15

Mechanical Properties of steel grade SKT4

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)
717 (≥) 479 (≥) 32 34 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade SKT4

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
24 - -     0.23 -  
267 698 - 22.3 344   -  
578 - 41 31.2   322 431

Heat Treatment of steel grade SKT4

Heat treated : 1146°C - 1788°C

Technological Curves of steel grade SKT4

Cross Reference Table (Equivalent Grade) of SKT4

Grade Standard Country Application
SKT4 JIS Japan Hot-work die steel
SKT3 SKT6
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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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