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Description

Japan JIS SKH58 W-phase system high-speed tool steel and SKH58 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: SKH58
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy SKH58 JIS Japan W-phase system high-speed tool steel
SKH10
SKH40
SKH50
SKH51
SKH52
SKH53
SKH54
SKH55
SKH56
SKH57

Chemical composition(mass fraction)(wt.%) of the SKH58

C(%) Si(%) Mn(%) Cr(%) Mo(%) V(%) W(%)
0.95-1.05 Max 0.70 Max 0.40 3.50-4.50 8.20-9.20 1.70-2.20 1.50-2.10

Mechanical Properties of steel grade SKH58

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)
653 (≥) 661 (≥) 43 32 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 241

Physical Properties of steel grade SKH58

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
11 - -     0.34 -  
253 663 - 11.3 312   -  
623 - 34 42.2   423 431

Heat Treatment of steel grade SKH58

Heat treated : 1842°C - 1974°C

Technological Curves of steel grade SKH58

Cross Reference Table (Equivalent Grade) of SKH58

Grade Standard Country Application
SKH58 JIS Japan W-phase system high-speed tool steel

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