Aluminium alloys with a wide range of properties are used in engineering structures. Alloy systems are classified by a number system (ANSI) or by names indicating their main alloying constituents (DIN and ISO). Selecting the right alloy for a given application entails considerations of its tensile strength, density, ductility, formability, workability, weldability, and corrosion resistance, to name a few. A brief historical overview of alloys and manufacturing technologies is given in Ref Aluminium alloys are used extensively in aircraft due to their high strength-to-weight ratio. On the other hand, pure aluminium metal is much too soft for such uses, and it does not have the high tensile strength that is needed for airplanes and helicopters.
A third factor to be considered is that formability of a specific aluminium alloy plate can be found in the percentage of elongation and the difference between yield strength and ultimate tensile strength.it is quite obvious that the best series for forming, and thus for bending, are series 3xxx aluminium plate, 5xxx aluminium plate, and in some cases 6xxx aluminium plate. Series 2xxx and 7xxx are not to be considered and thus should be avoided due to being extremely strong. They are difficult to form in any way.
aluminum foil strip and coil in appropriate strip widths and lengths to conduct the electrical currents involved in coil applications, have widely replaced wire in electrical transformers, from large power distribution sizes down to small transformers designed for a variety of uses including welding machines. aluminum foil strips conductor is also employed in a variety of control units, holding coils, electromagnets, and others.