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 074~461 σb/MPa
Yield Strength 200 σ 0.2 ≥/MPa
Elongation 94 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 598~570 -
HRC 30 -

Physical Properties

Thermal expansion 38-90 e-6/K
Thermal conductivity 65-32 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 5519-3554 째C
Density 6401-4660 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