1.4731 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.4731

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AFNOR 1.4731

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This page is mainly introduced the 1.4731 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.4731,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
1.4731
  • Steel Garde:1.4731
  • Type:Special Alloy
  • Country:France
  • Standard:AFNOR
  • Application:Valve Internal Combustion Engines steel (NF-EN 1009-1998)

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 222~139 σb/MPa
Yield Strength 697 σ 0.2 ≥/MPa
Elongation 66 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 849~260 -
HRC 30 -

Physical Properties

Thermal expansion 35-95 e-6/K
Thermal conductivity 97-12 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 3738-4443 째C
Density 8905-8981 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)
1.4731 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