duralumin

duralumin

[doo-ral-yuh-min, dyoo-]
noun
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:
1905–10; < Latin dūr(us) hard + alumin(um)

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Duralumin (djʊˈræljʊmɪn)
 
n
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

Collins English Dictionary - Complete & Unabridged 10th Edition
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Encyclopedia Britannica
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duralumin

strong, hard, lightweight alloy of aluminum, widely used in aircraft construction, discovered and patented in 1910 by Alfred Wilm, a German metallurgist; it was originally made only at Duren in Germany. The original composition has been varied for particular applications; it may contain about 3 or 4 percent copper, 12 to 1 percent manganese, 12 to 1 12 percent magnesium, and, in some formulations, some silicon. After heat treatment and aging, these alloys are comparable to soft steel in strength

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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