- an alloy of aluminum that is 4 percent copper and contains small amounts of magnesium, manganese, iron, and silicon: used for applications requiring lightness and strength, as in airplane construction.
Origin of duralumin
1905–10; < Latin dūr(us) hard + alumin(um)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for duralumin
The duralumin factory is capable of meeting all Zeppelin requirements.Zeppelin
The latest German airplane, the "Junker," was made entirely of duralumin.Creative Chemistry
Edwin E. Slosson
Are their motors made with sheet steel cylinders or with duralumin engine blocks?The Great Drought
Sterner St. Paul Meek
They were through, penetrating solid crystal, masonry, steel and duralumin girders.
But duralumin, probably, a very light, strong alloy; and what I have here is a hunting knife with a can-opener on one end!
- trademark a light strong aluminium alloy containing 3.5–4.5 per cent of copper with small quantities of silicon, magnesium, and manganese; used in aircraft manufacture