Alloy МЛ17 (ВМЛ5)

  • 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 МЛ17
    Designation GOST Latin ML17
    Transliteration ML17
    By chemical elements CuЛ17
    Name The value
    Designation GOST Cyrillic ВМЛ5
    Designation GOST Latin BML5
    Transliteration VML5
    By chemical elements ВCuЛ5

    Description

    Alloy МЛ17 used: for the manufacture of various shaped precision castings parts, aerospace casting techniques, sand casting, gravity die casting, investment casting and plaster mold.

    Note

    Industrial heat resistant magnesium alloy system MD-REE-Zr.

    Standards

    Name Code Standards
    Thermal and thermochemical treatment of metals В04 OST 1 90121-90
    Non-ferrous metals, including rare, and their alloys В51 OST 1 90168-75
    Castings, non-ferrous metals and alloys В84 OST 1 90248-77

    Chemical composition

    Standard Si Ni Fe Cu Al Zn Zr Nd Mg Cd
    OST 1 90168-75 ≤0.03 ≤0.01 ≤0.01 ≤0.03 ≤0.03 7.8-9.2 0.7-1.1 0.03-0.3 Rest 0.2-1.2
    Mg is the basis.
    According to OST 1 90168-75 the chemical composition is given for the alloy grade ML17 (VML5). The sum of detectable impurities in the alloy is not more than 0.25%.

    Mechanical properties

    Section, mm sT|s0,2, MPa σU, MPa d
    Separately cast samples according to OST 1 90168-75
    ≥130 ≥220 ≥4
    ≥200 ≥300 ≥3

    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

    Technological properties

    Name The value
    Features of heat treatment According to OST 1 90121-90 to improve the mechanical properties (σв, σ0,2) castings into the ground, gravity die casting, investment casting and plaster mold apply heat treatment by mode T6 - Tempering by blowing air from 435±5 °C (extract 4-20 h) + aged at 155±5 °C (extract 24-50 h), air cooling. In this case the plastic properties decrease. A noticeable increase in the values of σв, σ0,2 is achieved in the hardening of the casting by blowing air. To maximize the mechanical properties of the alloy (σв, σ0,2) mode is applied Kzt61 - Quenching in warm water (80-90 °C) 350±5 °C (Step heating to 435±5 °C (extract 4-20 h), the heating to 350±5 °C (exposure 0-6 HR)) + aged at 155±5 °C (extract 24-50 h), air cooling.