Alloy MA18

  • Alloy MA18
  • Alloy MA21 (IMV2)

    • Designation

    Name The value
    Designation GOST Cyrillic МА18
    Designation GOST Latin MA18
    Transliteration MA18
    By chemical elements CuAl18

    Description

    Alloy MA18 is used: for the manufacture of semi-finished products (sheets, plates, bars, rods, profiles, strips, tubes, wire, stampings and forgings) by hot deformation, as well as ingots and slabs intended for the production of lightly loaded parts operating at temperatures from -253 °C to +60 °C when you want high stiffness and low weight.

    Standards

    Name Code Standards
    Non-ferrous metals, including rare, and their alloys В51 GOST 14957-76

    Chemical composition

    Standard Mn Si Ni Fe Cu Al Zn Ce Mg Be Na Li K
    GOST 14957-76 0.1-0.4 ≤0.15 ≤0.005 ≤0.05 ≤0.05 0.5-1 2-2.5 0.15-0.35 Rest ≤0.002 ≤0.01 10-11.5 ≤0.005
    Mg is the basis.
    According to GOST 14957-76 the mass fraction of other impurities is ≤ 0.30%. "Other impurities" include impurities whose permissible content limits are not indicated (≤), as well as impurities not included in the table, the content of which is not determined. Beryllium is not determined, but is introduced by calculation.

    Mechanical properties

    Section, mm sT|s0,2, MPa σU, MPa d5, % y, % HB, MPa
    Rolled steel in the delivery state
    ≥150 ≥185 ≥30.5 ≥60 ≥60

    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
    HB Brinell hardness number