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thumbDuralumin (also called duraluminum, duraluminium, duralum, dural(l)ium, or dural) is a trade name for one of the earliest types of age-hardenable aluminium-copper alloys. The term is a combination of Düren, dur (a German prefix meaning "hard"), and aluminium. Its use as a trade name is obsolete. Today the term mainly refers to

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