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Description

SKH 50 Tool Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel: SKH 50
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel SKH 50
SKT 3
SKT 4
55NiCrMoV7
SKT 6
45NiCrMo16
SKH 2
SKH 3
SKH 4
SKH 10
SKH 40

Chemical composition(mass fraction)(wt.%) of the SKH 50

C
Si
Mn
P
S
Cr Ni
 0.77-0.87  0.7 0.45  0.03  0.03  3.5-4.5   
Mo Al Cu Nb W V Ce
 8.0-9.0       1.4-2.0  1.0-1.4   
N Co Pb B Other    
             
             

Mechanical Properties of steel grade SKH 50

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)
997 (≥) 864 (≥) 43 21 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 221

Physical Properties of steel grade SKH 50

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
42 - -     0.13 -  
992 745 - 44.3 244   -  
318 - 13 12.2   422 124

Heat Treatment of steel grade SKH 50

Heat treated : 1168°C - 1915°C

Technological Curves of steel grade SKH 50

Cross Reference Table (Equivalent Grade) of SKH 50

Grade Standard Country Application
SKH2 JIS Japan Tungsten series high speed tool steel
SKH3 JIS Japan Tungsten series high speed tool steel
SKH4 JIS Japan Tungsten series high speed tool steel
SKH10 JIS Japan Tungsten series high speed tool steel
SKH40 JIS Japan Powder metallurgy high-speed tool steel
SKH50 JIS Japan W-phase system high-speed tool steel
SKH51 JIS Japan W-phase system high-speed tool steel
SKH52 JIS Japan W-phase system high-speed tool steel
SKH53 JIS Japan W-phase system high-speed tool steel
SKH54 JIS Japan W-phase system high-speed tool steel
SKH55 JIS Japan W-phase system high-speed tool steel
SKH56 JIS Japan W-phase system high-speed tool steel
SKH57 JIS Japan W-phase system high-speed tool steel
SKH58 JIS Japan W-phase system high-speed tool steel
SKH59 JIS Japan W-phase system high-speed tool steel
SKH3 Sweden Carbide for cutting tools
SKH3 Sweden Carbide for cutting tools
SKH59
SKH59
SKH53 China Carbide for cutting tools

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