7055 aluminium alloy

7055 alloy is heat treatable wrought aluminum alloy.^[1] It has high ultimate tensile strength value of 593 MPa.

Chemical Composition

Element[1]	Content (%)
Aluminum	85.9 - 88.5
Zinc	7.6 - 8.4
Magnesium	1.8 - 2.3
Copper	2 - 2.6
Iron	≤ 0.15
Zirconium	0.080 - 0.25
Manganese	≤ 0.050
Chromium	≤ 0.040
Silicon	≤ 0.10
Titanium	≤ 0.060
Other (each)	≤ 0.050
Other (total)	≤ 0.15

Properties

Properties	SI Unit
Density[1]	2.86 g/cm3
Ultimate Tensile Strength[2]	593 MPa
Elongation at Break[2]	9.0% to 12.0%
Fracture Toughness[2]	24.2 MPa-m½

Applications

1. Aerospace sector^[1]
2. High strength requirement areas^[1]