STS431 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS431

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KS STS431

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This page is mainly introduced the STS431 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS431,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
STS431
  • Steel Garde:STS431
  • Type:Special Alloy
  • Country:Korea
  • Standard:KS
  • Application:martensitic steel

Cross Reference Table(Equivalent Materials):

Material Standard Country
STS431 KS Korea

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 014~871 σb/MPa
Yield Strength 516 σ 0.2 ≥/MPa
Elongation 61 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 418~913 -
HRC 30 -

Physical Properties

Thermal expansion 31-52 e-6/K
Thermal conductivity 95-98 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 8299-2848 째C
Density 4862-4423 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)
STS431 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