7129 aluminium alloy

Aluminium 7129 alloy is a heat treatable wrought alloy.[1]

Chemical composition
Element[1] Weight Percentage (%)
Aluminum 90.9 - 94
Zinc 4.2 - 5.2
Magnesium 1.3 - 2
Copper 0.50 - 0.90
Iron ≤ 0.30
Titanium ≤ 0.050
Vanadium ≤ 0.050
Gallium ≤ 0.030
Silicon ≤ 0.15
Chromium ≤ 0.10
Manganese ≤ 0.10
Remainder (each) ≤ 0.050
Remainder (total) ≤ 0.15

Properties
Properties Metric
Density[1] 2.78 g/cm³
Youngs modulus[2] 69 GPa
Elongation at Break[2] 9.0 % to 9.1 %
Fatigue Strength[2] 150 to 190 MPa
Shear Modulus[2] 26 GPa
Shear Strength[2] 250 to 260 MPa
Tensile Strength: Ultimate (UTS)[2] 430 MPa
Specific Heat Capacity[2] 880 J/kg-K
Thermal Conductivity[2] 150 W/m-K

Applications
  1. Aircraft manufacturing sector[1]

References
  1. "7129 aluminum alloy".
  2. "7129 aluminum properties".
  1. Comparison of 6061 and 7129 alloy
  2. http://www.matweb.com/search/datasheet.aspx?matguid=d62fafde9ffe4ef68614c5e2ab5869e5
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