7075 Aluminium Alloy Properties 7075 Aluminium Alloy ( AA7075 ) is an Aluminium Alloy with Zinc as its primary alloying element. 7075 Aluminium Alloy has excellent mechanical properties and exhibits good ductility. 7075 Aluminium Alloy has High resistance , Toughness and good resistance to fatigue. 7075 Aluminium Alloy is most commonly used for High Stressed Structural Application. 7075 Aluminium Alloy mainly comprises of Zinc :- 5.6 To 6.1% , Mg :- 2.1 To 2.5% , Copper :- 1.2 To 1.6%