Aluminum-lithium alloys have high specific strength (tensile strength/density), high specific stiffness, and low relative density. glenflange
For example, they can be used as modern aircraft skin materials. A large passenger aircraft can reduce the weight by 50 kg. Taking the Boeing 747 as an example, for every 1 kg reduction, it can make a profit of $2,000 a year. Titanium alloy is lighter than steel, corrosion-resistant, non-magnetic, and high strength. It is an ideal material for aviation and naval vessels.