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SKD4

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SKD12 SKD5
#SKD4

Description

Japan JIS SKD4 Hot-work die steel and SKD4 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: SKD4
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy SKD4 JIS Japan Hot-work die steel
SKS3
SKS31
SKS93
SKS94
SKS95
SKD1
SKD2
SKD10
SKD11
SKD12

Chemical composition(mass fraction)(wt.%) of the SKD4

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) V(%) W(%)
0.25-0.35 Max 0.40 Max 0.60 Max 0.030 Max 0.020 2.00-3.00 0.30-0.5 5.00-6.00

Mechanical Properties of steel grade SKD4

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)
246 (≥) 975 (≥) 14 12 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 132

Physical Properties of steel grade SKD4

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
14 - -     0.33 -  
336 513 - 23.3 413   -  
584 - 12 32.2   344 121

Heat Treatment of steel grade SKD4

Heat treated : 1587°C - 1285°C

Technological Curves of steel grade SKD4

Cross Reference Table (Equivalent Grade) of SKD4

Grade Standard Country Application
SKD4 JIS Japan Hot-work die steel
SKD12 SKD5
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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