21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070

DIN 21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070

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This page is mainly introduced the 21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.

21CMoV5-7 alloy structural steel and its 1.7709 replacement alloys belong to the group of high temperature boiler steels for energy industries. They are used in the production of components/subassemblies for the power industry, working at the temperatures up to 550 oC for small parts and for large forgings. The main applications of these grades of steel are rotors of steam turbines, rotor blades, shaft forgings, reservoirs and covers for up to 550 ℃ temperatures, nuts, tubes for high temperatures up to 540 ℃.

Relevant products:

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

    21CMoV5-7,1.7709,2...

  • Chemical composition(mass fraction)(wt.%)

    Elements Min.(≥) Max.(≤) Similar Remarks
    C 0.17  0.25
    Mn 0.30  0.50
    Si 0.30  0.60
    P   0.035
    S   0.035
    Cr 1.20  1.50
    Ni   0.60
    Mo 1.00  1.20
    V 0.25  0.35

    Mechanical Properties

    Tensile strength 375~687 σb/MPa
    Yield Strength 182 σ 0.2 ≥/MPa
    Elongation 67 δ5≥(%)
    ψ - ψ≥(%)
    Akv - Akv≥/J
    HBS 792~727 -
    HRC 30 -

    Physical Properties

    Thermal expansion 89-03 e-6/K
    Thermal conductivity 75-32 W/m.K
    Specific heat 450-460 J/kg.K
    Melting temperature 2156-3339 째C
    Density 0288-1197 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)
    21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070 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

    Hot keywords:21CrMoV5-71-770921CrMoV5-111-807020CDV5-07
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