Today, titanium and its various alloys are commonly used in both military and commercial aircraft, and spacecraft. Titanium components can be found in both airframe and engine assemblies. Landing gear, fasteners, passenger seats, engine frames, engine fan blades or any application that requires corrosion and heat resistance are commonly made from titanium. Titanium replaces aluminum on parts that come in contact with carbon fiber to prevent galvanic corrosion.
Because of its high strength-to-weight ratio, titanium in commercial aircraft improves fuel efficiency and lowers operating costs. Lower reciprocating mass makes titanium an excellent choice for rotating parts in aircraft engines.