Alloy ML5-1

  • Alloy ML23
  • Alloy ML9
  • Alloy ML8
  • Alloy ML7-1
  • Alloy ML6
  • Alloy ML5pch
  • Alloy ML5on
  • Alloy ML5-2
  • Alloy ML5-1
  • Alloy ML5
  • Alloy ML4pch
  • Alloy ML4
  • Alloy ML3
  • Alloy ML22
  • Alloy ML21
  • Alloy ML20-1
  • Alloy ML2
  • Alloy ML19 (VML7)
  • Alloy ML18 (VML6)
  • Alloy ML17 (VML5)
  • Alloy ML15
  • Alloy ML12
  • Alloy ML11
  • Alloy ML10

    • Designation

    Name The value
    Designation GOST Cyrillic МЛ5-1
    Designation GOST Latin ML5-1
    Transliteration ML5-1
    By chemical elements CuЛ5-1

    Description

    Alloy ML5−1 is used: for the manufacture by sand casting, gravity die casting, pressure loaded parts of the middle and of complex configuration, designed for operation in atmospheric conditions, including in areas with warm humid climate according to GOST 16350 for up to 5 years; parts of aircraft (parts management, parts of the wings, farm gear, buildings machines and devices) with maximum working temperature up to +150 °C (long-term), up to +250 °C (short-term).

    Note

    Alloy system Mg-Al-Zn.
    Alloy ML5−1 has the best casting, mechanical and technological properties than alloy ML5.
    Aluminum and zinc increase the mechanical properties of the alloy (and the effect of aluminum effect is stronger than zinc) and manganese improves corrosion resistance. To reduce oxidation, the alloy contains beryllium.

    Standards

    Name Code Standards
    Non-ferrous metals, including rare, and their alloys В51 OST 3-4132-78
    Castings, non-ferrous metals and alloys В84 OST 3-4227-79

    Chemical composition

    Standard Mn Si Ni Fe Cu Al Zn Zr Mg Be
    OST 3-4132-78 0.15-0.5 ≤0.25 ≤0.01 ≤0.06 ≤0.1 7.5-9 0.2-0.8 ≤0.002 Rest 0.0003-0.002
    Mg is the basis.
    According to OST 3-4132-78 the sum of impurities to be determined is 0.50%. For parts designed to work in areas with a warm, humid climate, as well as for long-term storage and use, the impurity content should not exceed: silicon ≤ 0.15%, iron ≤ 0.020%, copper ≤ 0.040%, nickel ≤ 0.0050% .

    Mechanical properties

    Section, mm sT|s0,2, MPa σU, MPa d5, %
    The castings as delivered to EAST 3-4132-78
    - ≥150 ≥2
    - ≥150 ≥2
    ≥85 ≥230 ≥5
    - ≥230 ≥2

    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

    Physical characteristics

    Temperature Е, HPa r, kg/m3 l, W/(m · °C) R, Mr. · m a, 10-6 1/°C С, J/(kg · °C)
    20 412 1810 789 134 - 10467
    100 - - - - 268 -
    200 - - - - 281 -
    300 - - - - 287 -

    A description of the physical symbols

    Name Description
    Е The normal elasticity modulus
    r Density
    l Coefficient of thermal conductivity
    R UD. the resistivity

    Technological properties

    Name The value
    Features of heat treatment The alloy can strengthen its positions heat treatment - quenching and aging.
    Corrosion resistance The alloy increased corrosion resistance compared to alloy ML5. Parts should be corrosion protection by applying an oxide coating according to GOST 9.025 and coatings for OST 3-1928. 3-1460.
    Casting The alloy has a broader crystallization range than alloys based on aluminum, therefore has a low castability. Due to the large interval of crystallization of the alloy is prone to hot cracks.