2000 Series Aluminium Alloy is alloyed with copper. The strength of this alloy can be precipitation hardened which is equivalent to steel. They were known as duralumin formerly and used to be the most common aerospace alloy, but they are susceptible to stress corrosion cracking and 7000 series increasingly replaced 2000 series in new designs.
Common alloy grade: 2A12 (LY12)/2014/2024
Uses & application: 2000 series aluminum plate is the aviation material which is used in the airplane structure like the skin, the skeleton, the rib beam, frame, etc, the truck wheel hub