7079 aluminium 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 ZnMgCuFeSiMnCrTiRemainder (each)Remainder (total)Al [2]
minimum3.82.9.40.000.00.1.10.000.000.00Remainder
maximum4.83.7.8.4.3.3.25.1.5.15Remainder

Heat treatment for aluminum 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. Retrieved 25 August 2015.
  3. "Aluminum 7079".
  4. "Steelforge". Steelforge.

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