SKH55 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SKH55

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JIS SKH55

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This page is mainly introduced the SKH55 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SKH55,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
SKH55
  • Steel Garde:SKH55
  • Type:Special Alloy
  • Country:Japan
  • Standard:JIS
  • Application:W-phase system high-speed tool steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 623~559 σb/MPa
Yield Strength 567 σ 0.2 ≥/MPa
Elongation 48 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 866~786 -
HRC 30 -

Physical Properties

Thermal expansion 29-06 e-6/K
Thermal conductivity 59-78 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 6228-5892 째C
Density 3693-9611 kg/m3
Resistivity 0.50-0.60 Ohm.mm2/m
     

Heat Treatment Regime

Annealing

Quenching

Tempering

Normalizing

Q & T

Size Availability

Steel Grade Specification Processing range(mm)
SKH55 Special Alloy Round Bar and Hollow Bar Φ1 to Φ2000
Square and Flat Steel Φ10 to Φ100
Plate and Sheet 0.08-800(Thickness)*10-1500(Width)*Length
Tube or Pipe OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
Coil and Strip Steel THK:0.1mm Width:1500mm
Forged Ring/Cylindrical/Disk

Technical specification/standard for download

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