STS31 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS31

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KS STS31

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This page is mainly introduced the STS31 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS31,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
  • Steel Garde:STS31
  • Type:Special Alloy
  • Country:Korea
  • Standard:KS
  • Application:Carbide for cutting tools

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 130~877 σb/MPa
Yield Strength 813 σ 0.2 ≥/MPa
Elongation 02 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 180~178 -
HRC 30 -

Physical Properties

Thermal expansion 95-73 e-6/K
Thermal conductivity 32-97 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 8487-7317 째C
Density 1933-8021 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)
STS31 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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