2Duralumin was developed by the German History of DuraluminDuralumin was developed by the Germanmetallurgist Alfred Wilm at Dürener MetallwerkeAktien Gesellschaft. In 1903, Wilm discovered thatafter quenching, an aluminium alloy containing4% copper would slowly harden when left at roomtemperature for several days. Further improvementsled to the introduction of duralumin in 1909.The name is obsolete today, and mainly used inpopular science to describe the Al-Cu alloy system,or 2000 series as designated by the InternationalAlloy Designation System (IADS) originally createdin 1970 by the Aluminum Association.
3Duralumin It is strong and hard. It is an alloy of aluminum that is 4 percent copper,1 percent manganese, 0.5 percent, and 95.5 percentaluminumUssually used for it’s lightness and strength.
4making the frames of automobiles and speedboats It is used for......making aircraft framesmaking the frames of automobilesand speedboatsmaking household articles
5Future Plans * 2011: Wire, rod, and bar for screw machine products. Applications where good machinability and good strengthare required.* 2014: Heavy-duty forgings, plate, and extrusionsfor aircraft fittings, wheels, and major structuralcomponents, space booster tankage and structure, truckframe and suspension components. Applications requiringhigh strength and hardness including service at elevatedtemperatures.
6* 2024: Aircraft structures, rivets, hardware, truck wheels, screw machine products, and other miscellaneous structuralapplications. The first age-hardened alloy ever discovered.* 2036: Sheet for auto body panels.* 2048: Sheet and plate in structural components foraerospace application and military equipment.* 2141: Plate in thicknesses of 40 to 150 mm(1.5 to 6.0 in.) for aircraft structures.* 2218: Forgings; aircraft and diesel engine pistons;aircraft engine cylind