7079 aluminium alloy

Aluminium zinc alloy

7079 aluminium alloy (UNS designation A97079) is a high strength, heat treatable wrought aluminium alloy used in the aircraft industry. Age-hardening heat treatment enhances the characteristics of AL 7079, eliminating variations in characteristics seen in Aluminium 7075.[1]

Chemical composition

Element Zn Mg Cu Fe Si Mn Cr Ti Remainder (each) Remainder (total) Al [2]
minimum 3.8 2.9 .4 0.00 0.00 .1 .1 0.00 0.00 0.00 Remainder
maximum 4.8 3.7 .8 .4 .3 .3 .25 .1 .5 .15 Remainder

Heat treatment for aluminium 7079

  1. Solution treatment
  2. Aging treatment
  3. Annealing treatment

[3]

Machinability

  1. Alloy 7079 T-6 provides qualities comparable to alloy 7075-T6
  2. -F condition provides acceptable results
  3. Improved machinability compared to fabricated and annealed tempers

[3]

Workability

  1. Can be formed similar to 7075
  2. Annealing provides superior formability and noticeable decline in workability following solution heat treatment
  3. Form in “as-quenched” condition for best results

[3]

Applications

  1. Mobile industry equipment
  2. Aircraft parts, including wing panels and bulkhead assemblies
  3. Hydraulic units
  4. Highly stressed parts

[4]

References

  1. ^ "Steelforge".
  2. ^ "Azom". Azom. 8 May 2013. Retrieved 25 August 2015.
  3. ^ a b c "Aluminum 7079".
  4. ^ "Steelforge". Steelforge.
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Aluminium alloys
Introduction
  • Aluminium
  • Aluminium alloys
  • History of aluminium
Al 1000 series (Pure)
  • 1050
  • 1060
  • 1070
  • 1100
  • 1145
  • 1199
  • 1200
  • 1230
  • 1350
  • 1370
  • 1420
  • 1421
  • 1424
  • 1430
  • 1440
  • 1441
  • 1445
  • 1450
  • 1460
  • 1461
  • 1464
  • 1469
Al-Cu 2000 series
Al-Mn 3000 series
Al-Si 4000 series
  • 4006
  • 4007
  • 4015
  • 4032
  • 4043
  • 4047
  • 4543
Al-Mg 5000 series
Al-Mg-Si 6000 series
Al-Zn 7000 series8000 series (Misc.)
  • 8006
  • 8009
  • 8011
  • 8014
  • 8019
  • 8025
  • 8030
  • 8090
  • 8091
  • 8093
  • 8176
Named alloys

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