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SKH 55

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SKH 54 SKH 56
#SKH #55

Description

SKH 55 Tool Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel: SKH 55
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel SKH 55
SKH 2
SKH 3
SKH 4
SKH 10
SKH 40
SKH 50
SKH 51
SKH 52
SKH 53
SKH 54

Chemical composition(mass fraction)(wt.%) of the SKH 55

C
≤		 Si
≤		 Mn
≤		 P
≤		 S
≤		 Cr Ni
 0.87-0.95 0.45  0.4  0.03  0.03  3.8-4.5   
Mo Al Cu Nb W V Ce
 4.7-5.2       5.9-6.7  1.7-2.1   
N Co Pb B Other    
   4.5-5.0          
             

Mechanical Properties of steel grade SKH 55

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)
187 (≥) 616 (≥) 23 14 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical Properties of steel grade SKH 55

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 - -     0.13 -  
135 592 - 13.3 233   -  
366 - 12 22.2   231 224

Heat Treatment of steel grade SKH 55

Heat treated : 1991°C - 1627°C

Technological Curves of steel grade SKH 55

Cross Reference Table (Equivalent Grade) of SKH 55

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
SKH 54 SKH 56
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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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