7475 aluminium alloy

7475 aluminum alloy (Adirium) is a wrought alloy with high zinc weight percentage. It also contains magnesium, silicon and chromium.[1]

7475 alloy can not be welded. It has more spring back because of its strength. It has high machinability.

Chemical composition

Element[1] Content (%)
Aluminum 90.3
Zinc 5.7
Magnesium 2.3
Silicon 1.50
Chromium 0.22

Properties

Properties[1] Value
Density 2.6–2.8 g/cm3 (0.094–0.101 lb/cu in)
Melting point 546 °C (1,015 °F)
Elastic modulus 70–80 GPa (10,000–12,000 ksi)
Poisson's ratio 0.33
Thermal conductivity 177 W/m/K (0.040 hp/ft/°R)
Ultimate Tensile Strength[2] 531 MPa (77.0 ksi)
Elongation at Break[2] 12%
Modulus of Elasticity[2] 71.7 GPa (10,400 ksi)

Applications

  1. Shell casings
  2. Aircraft

[1]

References

  1. ^ a b c d "Aluminum 7475 alloy". 31 August 2012. Archived from the original on 2021-01-09.
  2. ^ a b c "7475 alloys". Archived from the original on 2004-05-21.
  1. https://www.suppliersonline.com/propertypages/7475.asp
  2. https://www.suppliersonline.com/propertypages/7475.asp
  3. https://www.makeitfrom.com/material-properties/7475-AlZn5.5MgCuA-Aluminum
  4. Tanaka, Hiroki; Minoda, Tadashi (1 July 2014). "Mechanical properties of 7475 aluminum alloy sheets with fine subgrain structure by warm rolling". Transactions of Nonferrous Metals Society of China. 24 (7): 2187–2195. doi:10.1016/S1003-6326(14)63331-8.
  5. https://www.efunda.com/Materials/alloys/aluminum/show_aluminum.cfm?ID=AA_7475&show_prop=all&Page_Title=AA%207475
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