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

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AS 4140H

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

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 589~658 σb/MPa
Yield Strength 090 σ 0.2 ≥/MPa
Elongation 57 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 325~283 -
HRC 30 -

Physical Properties

Thermal expansion 46-55 e-6/K
Thermal conductivity 94-75 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 8502-8073 째C
Density 5013-8492 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)
4140H 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

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