SUS431 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUS431

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JIS SUS431

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This page is mainly introduced the SUS431 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUS431,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
SUS431
  • Steel Garde:SUS431
  • Type:Special Alloy
  • Country:Japan
  • Standard:JIS
  • Application:Martensitic special steel

Cross Reference Table(Equivalent Materials):

Material Standard Country
SUS431FB JIS Japan

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 130~590 σb/MPa
Yield Strength 193 σ 0.2 ≥/MPa
Elongation 15 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 047~461 -
HRC 30 -

Physical Properties

Thermal expansion 29-02 e-6/K
Thermal conductivity 58-86 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 2466-7294 째C
Density 9939-9337 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)
SUS431 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