21CMoV5-7 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 21CMoV5-7

DIN 21CMoV5-7

Profile

This page is mainly introduced the 21CMoV5-7 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 21CMoV5-7,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...

  • Cross Reference Table(Equivalent Materials):

    Material Standard Country
    21CMoV5-7 EN European
    1.7709 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 0.30  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 109~066 σb/MPa
    Yield Strength 800 σ 0.2 ≥/MPa
    Elongation 69 δ5≥(%)
    ψ - ψ≥(%)
    Akv - Akv≥/J
    HBS 984~146 -
    HRC 30 -

    Physical Properties

    Thermal expansion 81-41 e-6/K
    Thermal conductivity 55-92 W/m.K
    Specific heat 450-460 J/kg.K
    Melting temperature 9223-6708 째C
    Density 2702-7184 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)
    21CMoV5-7 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