ICI 4340 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ICI 4340

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AISI ICI 4340

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This page is mainly introduced the ICI 4340 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ICI 4340,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
ICI 4340
  • Steel Garde:ICI 4340
  • Type:Special Alloy
  • Country:USA
  • Standard:AISI
  • Application:

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 429~069 σb/MPa
Yield Strength 559 σ 0.2 ≥/MPa
Elongation 34 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 879~133 -
HRC 30 -

Physical Properties

Thermal expansion 30-22 e-6/K
Thermal conductivity 67-80 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 7985-9747 째C
Density 7921-0462 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)
ICI 4340 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