Titanium alloys exhibit a unique combination of mechanical and physical properties, which make them desirable for certain critical applications in the aerospace,
chemical, medical, and energy industries. Their high strength-to-density ratio gives them high structural efficiency. The high strength and low density of titanium (approx. 40% lower density than that of same
strength steel) have led to its usage in the aerospace sector. For instance, it is used in landing gear of the Boeing 777, Boeing 787, and Airbus A380 aircraft. Titanium alloys have exceptional corrosion resistance and elevated temperature resistance, and are also biocompatible.