The removable wing tips were made up of spruce formers to which the duralumin skin was secured.
From the en.wikipedia.org
The main construction material was duralumin, and the external coverings were made of Duralumin sheeting.
From the en.wikipedia.org
As more duralumin became available for the Soviet aviation industry, the Il-2 received a set of all-metal wing panels.
From the en.wikipedia.org
Duralumin, a mixture of aluminium with copper, magnesium and manganese, was extensively used in the manufacture of Zeppelins.
From the newscientist.com
Duralumin, an aluminum alloy used in airship frames and auto body panels, isn't necessarily the first material springing to one's mind when it comes to cell phones cases.
From the techcrunch.com
Perhaps a combination of leaking hydrogen from a torn gas bag, and the vibrations caused by a swift rotation for a quicker landing started static electricity in the duralumin alloy skeleton.
From the en.wikipedia.org
More examples
An aluminum-based alloy
Duralumin (also called duraluminum, duraluminium or dural) is the trade name of one of the earliest types of age-hardenable alloys. The main alloying constituents are copper, manganese, and magnesium. A commonly used modern equivalent of this alloy type is AA2024, which contains 4.4% copper, 1. ...
An alloy of over 90% aluminium, 4% copper and traces of manganese, magnesium, iron and silicon, widely used in the aircraft industry