SK90 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SK90

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JIS SK90

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This page is mainly introduced the SK90 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SK90,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
SK90
  • Steel Garde:SK90
  • Type:Special Alloy
  • Country:Japan
  • Standard:JIS
  • Application:Carbon tool steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 462~312 σb/MPa
Yield Strength 517 σ 0.2 ≥/MPa
Elongation 34 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 813~282 -
HRC 30 -

Physical Properties

Thermal expansion 03-08 e-6/K
Thermal conductivity 84-32 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 7311-7296 째C
Density 4670-4672 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)
SK90 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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