Alloy МА8

  • Alloy MA1
  • Alloy MA11
  • Alloy MA12
  • Alloy MA14
  • Alloy MA15
  • Alloy MA19
  • Alloy MA2
  • Alloy MA2-1
  • Alloy MA2-1pch
  • Alloy MA20
  • Alloy MA5
  • Alloy MA8
  • Alloy MA8pch

    • Designation

    Name The value
    Designation GOST Cyrillic МА8
    Designation GOST Latin MA8
    Transliteration MA8
    By chemical elements CuAl8

    Description

    Alloy МА8 used: for the manufacture of semi-finished products (sheets, plates, rods, sheets, tubes, wire, stampings and forgings) by hot deformation; extruded sections with cross sectional area up to 12 cm2 and a diameter of the circumscribed circle of up to 150 mm; ingots and slabs intended for the production of articles of complex shape and welded constructions with maximum operating temperatures up to +200 °C — long, up to +250 °C — short-term.

    Standards

    Name Code Standards
    Bars and shapes В52 GOST 13616-97, GOST 13617-97, GOST 13618-97, GOST 13619-97, GOST 13620-90, GOST 13621-90, GOST 13622-91, GOST 13623-90, GOST 13624-90, GOST 13737-90, GOST 13738-91, GOST 17575-90, GOST 17576-97, GOST 19657-84, GOST 29296-92, GOST 29303-92, GOST Р 50066-92, GOST Р 50067-92, GOST Р 50077-92
    Non-ferrous metals, including rare, and their alloys В51 GOST 14957-76, OST 4.021.009-92
    Bars В55 GOST 18351-73
    Tubes of non-ferrous metals and alloys В64 GOST 19441-74
    Sheets and strips В53 GOST 22635-77, OST 4.021.048-92, TU 1-9-203-77, TU 1-9-334-87, TU 1-9-388-73

    Chemical composition

    Standard Mn Si Ni Fe Cu Al Zn Ce Mg Be
    GOST 14957-76 1.3-2.2 ≤0.1 ≤0.007 ≤0.05 ≤0.05 ≤0.1 ≤0.3 0.15-0.35 Rest ≤0.002
    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 d HB, MPa
    Rolled steel in the delivery state
    140-160 220-250 7-12 ≥40
    Sheet metal in delivery condition according to GOST 22635-77, OST 4.021.048-92 (samples transverse)
    1-1.5 ≥145 ≥225 ≥8 -
    1.5-3 ≥135 ≥215 ≥6 -
    0.6-2.5 ≥120 ≥225 ≥12 -
    2.5-10.5 ≥110 ≥215 ≥10 -
    Extruded GOST 19657-84 without heat treatment in the state of delivery
    - ≥205 ≥10 ≥40
    Bars and rods, hot-pressed in the delivery condition without heat treatment according to GOST 18351-73 (longitudinal samples)
    100-160 - ≥195 ≥2 -
    160-200 - ≥175 ≥1 -
    5-50 - ≥215 ≥4 -
    50-100 - ≥205 ≥3 -
    Tubes extruded in the state of delivery according to GOST 19441-74 (samples)
    - - ≥225 ≥8 -

    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
    HB Brinell hardness number

    Physical characteristics

    Temperature Е, HPa r, kg/m3 l, W/(m · °C) R, Mr. · m
    20 42 1780 1339 51

    A description of the physical symbols

    Name Description
    Е The normal elasticity modulus
    r Density
    l Coefficient of thermal conductivity
    С Specific heat