AISI 431 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of AISI 431

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AISI AISI 431

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This page is mainly introduced the AISI 431 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of AISI 431,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
AISI 431
  • Steel Garde:AISI 431
  • Type:Special Alloy
  • Country:USA
  • Standard:AISI
  • Application:Martensitic special steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 449~357 σb/MPa
Yield Strength 266 σ 0.2 ≥/MPa
Elongation 05 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 525~841 -
HRC 30 -

Physical Properties

Thermal expansion 91-27 e-6/K
Thermal conductivity 44-52 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 9903-6638 째C
Density 9531-2244 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)
AISI 431 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