7079 aluminium alloy

Summary

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

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  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. ^ a b c "Aluminum 7079".
  4. ^ "Steelforge". Steelforge.