20CrMn chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 20CrMn

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GBT 20CrMn

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This page is mainly introduced the 20CrMn chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 20CrMn,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
20CrMn
  • Steel Garde:20CrMn
  • Type:Special Alloy
  • Country:China
  • Standard:GBT
  • Application:China structural steel and alloy steel

Cross Reference Table(Equivalent Materials):

Material Standard Country
20CrMnVTiB4-10 AFNOR France
20CrMnSi GBT China
20CrMnMo GBT China
20CrMnTi GBT China
20CrMnMoH GBT China
20CrMnTiH GBT China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 903~881 σb/MPa
Yield Strength 152 σ 0.2 ≥/MPa
Elongation 03 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 593~114 -
HRC 30 -

Physical Properties

Thermal expansion 23-72 e-6/K
Thermal conductivity 27-04 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 3548-2845 째C
Density 4641-4223 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)
20CrMn 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