Aluminium / Aluminum 7055 Alloy (UNS A97055)

Topics Covered

Chemical Composition
Physical Properties


Aluminium / aluminum structures can be lighter than steel structures, thus it has been widely used in the aviation industry.

Aluminium / aluminum 7xxx alloys series are widely used in the aviation industry. Aluminium / aluminum 7055 alloy is a heat treatable wrought alloy. The following datasheet will provide more details about aluminium / aluminum 7055 alloy.

Chemical Composition

The following table shows the chemical composition of aluminium / aluminum 7055 alloy.

Element Content (%)
Aluminum, Al 85.9 - 88.5
Zinc, Zn 7.6 - 8.4
Magnesium, Mg 1.8 - 2.3
Copper, Cu 2 - 2.6
Iron, Fe ≤ 0.15
Zirconium, Zr 0.080 - 0.25
Manganese, Mn ≤ 0.050
Chromium, Cr ≤ 0.040
Silicon, Si ≤ 0.10
Titanium, Ti ≤ 0.060
Other (each) ≤ 0.050
Other (total) ≤ 0.15

Physical Properties

The physical properties of aluminium / aluminum 7055 alloy are outlined in the following table.

Properties Metric Imperial
Density 2.86 g/cm³ 0.103 lb/in³


Aluminium / aluminum 7055 alloy is chiefly used in the aerospace sector and other high strength requirement areas.

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