Aluminum 7079

General Characteristics of Aluminum 7079

Age-hardening heat treatment enhances the characteristics of Aluminum 7079, a high-strength alloy that eliminates variations in characteristics seen in Aluminum 7075. Aluminum 7079 has proven to be ideally suited for highly stressed parts and serves the aircraft industry.

Chemical Composition of Aluminum 7079

  • Zinc 3.8-4.8
  • Magnesium 2.9-3.7
  • Copper 0.40-0.8
  • Chromium 0.10-0.25
  • Manganese 0.10-0.30
  • Silicon 0.30 max
  • Iron 0.40 max
  • Titanium 0.10 max
  • Additional impurities 0.5 individual max; 0.15 total max
  • Aluminum balance

Heat Treatment of Aluminum 7079

  • Solution treatment
  • Aging treatment
  • Annealing treatment

Applications of Aluminum 7079

  • Aircraft parts, including wing panels and bulkhead assemblies
  • Mobile industry equipment
  • Hydraulic units

Machinability of Aluminum 7079

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

Workability of Aluminum 7079

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

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