Alloy ВТ20Л

  • Alloy VT14L
  • Alloy VT1L
  • Alloy VT20L
  • Alloy VT21L
  • Alloy VT40L
  • Alloy VT5L
  • Alloy VT6L
  • Alloy VT9L
  • Alloy ET2
  • Alloy ET3
  • Alloy ET5
  • Alloy ET7

    • Designation

    Name The value
    Designation GOST Cyrillic ВТ20Л
    Designation GOST Latin BT20L
    Transliteration VT20L
    By chemical elements ВTe20

    Description

    Alloy ВТ20Л used: for the manufacture of castings of high-loaded details of responsible use fill in a chemically neutral form: of cast housings of aircraft engines, turbines, impellers etc.

    Standards

    Name Code Standards
    Non-ferrous metals, including rare, and their alloys В51 OST 1 90030-77
    Castings, non-ferrous metals and alloys В84 OST 1 90060-92

    Chemical composition

    Standard C Si Fe N Al V Ti Mo W O Zr H
    OST 1 90030-77 ≤0.15 ≤0.15 ≤0.3 ≤0.05 5.5-6.8 0.8-2.5 Rest 0.5-2 ≤0.2 ≤0.16 1.5-2.5 ≤0.01
    Ti is the basis.
    According to OST 1 90030-77 the amount of other (not indicated) impurities should be no more than 0.30%. The total content in the alloy of chromium and manganese is allowed not more than 0.15%. The total content of copper and nickel in the alloy is allowed in an amount not exceeding 0.10%, including nickel not more than 0.080%.

    Mechanical properties

    sT|s0,2, MPa σU, MPa d y, % KCU, kJ/m2
    Casting as supplied after annealing
    ≥785 883-1128 ≥5 ≥12 ≥274

    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
    d Elongation after rupture
    y The relative narrowing
    KCU Toughness