40CrNiMoA chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 40CrNiMoA

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GBT 40CrNiMoA

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This page is mainly introduced the 40CrNiMoA chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 40CrNiMoA,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
40CrNiMoA
  • Steel Garde:40CrNiMoA
  • Type:Special Alloy
  • Country:China
  • Standard:GBT
  • Application:China structural steel and alloy steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 705~991 σb/MPa
Yield Strength 986 σ 0.2 ≥/MPa
Elongation 48 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 729~656 -
HRC 30 -

Physical Properties

Thermal expansion 68-71 e-6/K
Thermal conductivity 04-68 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 2785-7703 째C
Density 2401-8768 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)
40CrNiMoA 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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