1.7709 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.7709

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EN 1.7709

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This page is mainly introduced the 1.7709 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.7709,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties
  • Steel Garde:1.7709
  • Type:Structural Steel
  • Country:European
  • Standard:EN
  • Standard Number:
    ITEM Standard Number Descriptions
    1 EN 10269-1999 Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties
  • Application:high temperature boiler steels for energy industries

Relevant products:

  • 21CMoV5-7,1.7709,21CRMOV5-11,1.8070 Forgings

    21CMoV5-7,1.7709,2...

  • Cross Reference Table(Equivalent Materials):

    Material Standard Country
    21CMoV5-7 DIN Germany
    21CMoV5-7 EN European
    21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070 DIN Germany

    Chemical composition(mass fraction)(wt.%)

    Elements Min.(≥) Max.(≤) Similar Remarks
    C 0.17  0.25
    Mn 0.40  0.80
    Si   0.40
    P   0.030
    S   0.030
    Cr 1.20  1.50
    Ni   0.60
    Mo 0.55  0.80
    V 0.25  0.35
    Al   0.03

    Mechanical Properties

    Tensile strength 817~041 σb/MPa
    Yield Strength 640 σ 0.2 ≥/MPa
    Elongation 58 δ5≥(%)
    ψ - ψ≥(%)
    Akv - Akv≥/J
    HBS 261~141 -
    HRC 30 -

    Physical Properties

    Thermal expansion 89-31 e-6/K
    Thermal conductivity 52-02 W/m.K
    Specific heat 450-460 J/kg.K
    Melting temperature 4645-2317 째C
    Density 7190-2253 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)
    1.7709 Structural Steel 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