ICI 4140 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ICI 4140

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AISI ICI 4140

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This page is mainly introduced the ICI 4140 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ICI 4140,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
ICI 4140
  • Steel Garde:ICI 4140
  • Type:Special Alloy
  • Country:USA
  • Standard:AISI
  • Application:

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 262~389 σb/MPa
Yield Strength 308 σ 0.2 ≥/MPa
Elongation 00 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 574~866 -
HRC 30 -

Physical Properties

Thermal expansion 27-06 e-6/K
Thermal conductivity 70-53 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 3315-1347 째C
Density 7673-3850 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 4140 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