Duralumin
![Corrosion of duralumin.](/Images/godic/202412/22/Corrosion_of_Duralumin4922.jpg")
![Duralumin sample from the USS Akron (ZRS-4)](/Images/godic/202412/22/ZRS-4_USS_Akron_duralumin_sample4922.jpg")
Duralumin (also called duraluminum, duralum, duraluminium, duralium or dural) is the trade name of one of the earliest types of age-hardenable aluminium alloys. Its use as a trade name is obsolete, and today the term is mainly used to describe aluminium-copper alloys, designated as the '2000' series by the International Alloy Designation System (IADS).