Alloy ХН50МВКТЮР (ЭП99)

  • Alloy 05KhN46MVBh (DI65)
  • Alloy KhN30VMT (EP437; VZH102)
  • Alloy KhN30TDU (EP655; VNS12)
  • Alloy KhN38VT (EI703)
  • Alloy KhN45TU (EK101; VKS-46)
  • Alloy KhN45Yu (EP747)
  • Alloy KhN50MVKTYR (EP99)
  • Alloy CrN60VT (EI868; VZh98)
  • Alloy KhN60Yu (EI559A)
  • Alloy KhN70Yu (EI652)
  • Alloy KhN75MBTU (EI602)
  • Alloy KhN77TU (EI437A)
  • Alloy CrN78T (EI435)
  • Alloy EC79

    • Designation

    Name The value
    Designation GOST Cyrillic ХН50МВКТЮР
    Designation GOST Latin XH50MBKTJuP
    Transliteration HN50MVKTYuR
    By chemical elements CrNi50CuВCoTeAlHg
    Name The value
    Designation GOST Cyrillic ЭП99
    Designation GOST Latin EP99
    Transliteration EhP99
    By chemical elements -

    Description

    Alloy ХН50МВКТЮР used: for the manufacture of rolled plates; details of special equipment operating at temperatures up to +950°C, turbo parts and aircraft manufacturers; welded rings.

    Note

    High-temperature Nickel-based alloy.

    Standards

    Name Code Standards
    Sheets and strips В23 GOST 19904-90
    Blanks. Of the workpiece. Slabs В31 OST 1 90254-77, TU 14-1-1214-75
    Sheets and strips В33 TU 14-1-146-71, TU 14-1-1747-76, TU 14-1-5103-92
    Bars and shapes В32 TU 14-1-1476-75
    Tape В34 TU 14-1-4423-88

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Cu Al B Ti Mo Nb W Ce Co
    TU 14-1-146-71 ≤0.1 ≤0.015 ≤0.015 ≤0.4 18-20 ≤0.5 Rest ≤5 ≤0.07 2.5-3.2 ≤0.005 1-1.5 3.5-5 ≤1.5 6-7.5 ≤0.02 5-8
    TU 14-1-1747-76 ≤0.1 ≤0.015 ≤0.015 ≤0.3 17.5-19.5 ≤0.3 Rest ≤3 ≤0.07 2.5-3 ≤0.005 1-1.5 3.5-5 ≤1.5 5.5-7 ≤0.02 5-8
    TU 14-1-5103-92 ≤0.1 ≤0.015 ≤0.015 ≤0.4 17.5-19.5 ≤0.5 Rest ≤5 - 2.5-3 ≤0.005 1-1.5 3.5-5 ≤1.5 5.5-7 ≤0.02 5-8
    Ni is the basis.
    According to TU 14-1-146-71, TU 14-1-5103-92 and TU 14-1-1747-76, the chemical composition is given for steel grade KhN50MVKTYUR-ID (EP99-ID).
    According to TU 14-1-5103-92 boron, cerium and zirconium are introduced into the metal by calculation and chemical analysis are not determined. The alloy is smelted in vacuum-induction furnaces, followed by remelting in a vacuum-arc furnace.

    Mechanical properties

    Section, mm sT|s0,2, MPa σU, MPa d5, % y, %
    Ring welded of alloy grade ХН50МВКТЮР-ID on OST 1 90254-77. Hardening in air, 1080-1100 °C (2-4 h exposure) + Aging at 760±20 °C (exposure 12-16 hours), air cooling
    ≥785 ≥1177 ≥20 ≥22
    Hot-rolled sheet. Quenching in water from 1080-1120 °C + Aging at 750-770 °C (exposure 8-12 hours) or at 890-910 (extract 8 hours)
    4-11 ≥835 ≥1180 ≥20 -
    Ring welded of alloy grade ХН50МВКТЮР-ID on OST 1 90254-77. Hardening in air, 1080-1100 °C (2-4 h exposure) + Aging at 760±20 °C (exposure 12-16 hours), air cooling
    ≥706 ≥1059 ≥9 ≥10
    Hot-rolled sheet. Quenching in water from 1080-1120 °C + Aging at 750-770 °C (exposure 8-12 hours) or at 890-910 (extract 8 hours)
    4-11 - ≥490 ≥9 -
    Hot-rolled sheet. Quenching in water, in air or under water shower with 1080-1120 °C
    4-11 - ≥1180 ≥35 -
    Steel cold-rolled sheet (0.8 to 3.9 mm) in the delivery condition. Quenching in water from 1080-1100 °C (20 min exposure) + Aging at 750-770 °C (exposure 8-12 hours), air cooling
    - - ≥490 ≥9 -
    Steel cold-rolled sheet (0.8 to 3.9 mm) as supplied
    - - ≥1180 ≥35 -

    Description mechanical marks

    Name Description
    sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
    σU Limit short-term strength
    d5 Elongation after rupture
    y The relative narrowing