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JIS SKH55

SKH55


SKH55 material is W-phase system high-speed tool steel.

Chemical composition of SKH55, SKH55 mechanical properties, SKH55 datasheet, SKH55 equivalent grade, Heat treatment and temperature process of SKH55.


SKH55 property sheet

SKH55 Spec.

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Chemical Composition of SKH55

C 0.87-0.95
Si Max 0.45
Mn Max 0.40
Cr 3.80-4.50
Mo 4.70-5.20
V 1.70-2.10
W 5.90-6.70
Co 4.50-5.00

Mechanical Properties of SKH55

Rp0.2 (MPa) 857 (≥)
Rm (MPa) 629 (≥)
AKV (J) 33
A (%) 31
Z (%) 21
Hardness HBW 111

SKH55 shape and dimensions

SKH55 Round bar: 1mm-800mm
SKH55 Square bar: 10mm * 10mm-600mm *600mm
SKH55 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
SKH55 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
SKH55 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
SKH55 Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

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