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 673~411 σb/MPa
Yield Strength 771 σ 0.2 ≥/MPa
Elongation 10 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 902~516 -
HRC 30 -

Physical Properties

Thermal expansion 90-66 e-6/K
Thermal conductivity 31-46 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 3632-5143 째C
Density 5930-4946 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