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 | 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
- Solution treatment
- Aging treatment
- Annealing treatment
Machinability
- Alloy-temper 7079-T6 provides qualities comparable to alloy-temper 7075-T6
- -F temper condition provides acceptable results
- Improved machinability compared to fabricated and annealed tempers
Workability
- Can be formed similar to 7075
- Annealing provides superior formability and noticeable decline in workability following solution heat treatment
- Form in “as-quenched” -W temper condition for best results
Applications
- Mobile industry equipment
- Aircraft parts, including wing panels and bulkhead assemblies
- Hydraulic units
- Highly stressed parts
References
- ^ "Steelforge".
- ^ "Azom". Azom. 8 May 2013. Retrieved 25 August 2015.
- ^ a b c "Aluminum 7079".
- ^ "Steelforge". Steelforge.
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