40CrMnNiMo8-6-4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 40CrMnNiMo8-6-4

DIN 40CrMnNiMo8-6-4

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This page is mainly introduced the 40CrMnNiMo8-6-4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 40CrMnNiMo8-6-4,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Alloyed CrMnNiMo steel

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.35  0.45
Si 0.20  0.40
Mn 1.30  1.60
P   0.035
S   0.035
Cr 1.80  2.10
Mo 0.15  0.25
V  
Ni 0.90  1.20

Mechanical Properties

Tensile strength 578~323 σb/MPa
Yield Strength 108 σ 0.2 ≥/MPa
Elongation 28 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 232~096 -
HRC 30 -

Physical Properties

Thermal expansion 95-36 e-6/K
Thermal conductivity 80-13 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 8893-6544 째C
Density 9226-2736 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)
40CrMnNiMo8-6-4 Tool Die Steels 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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