18MnMoNbR chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 18MnMoNbR

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GBT 18MnMoNbR

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This page is mainly introduced the 18MnMoNbR chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 18MnMoNbR,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
18MnMoNbR
  • Steel Garde:18MnMoNbR
  • Type:Special Alloy
  • Country:China
  • Standard:GBT
  • Application:China structural steel and alloy steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 150~920 σb/MPa
Yield Strength 993 σ 0.2 ≥/MPa
Elongation 30 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 293~415 -
HRC 30 -

Physical Properties

Thermal expansion 83-42 e-6/K
Thermal conductivity 25-61 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 4935-7473 째C
Density 8932-9037 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)
18MnMoNbR 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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