Titanium is lightweight, stable, and one of the strongest metals. In terms of strength to weight ratio, it has the highest rating of any metallic element.
Titanium is extremely acid-resistant and does not corrode easily; on exposure to oxygen, it forms a layer of titanium oxide that increases gradually. The titanium oxide coating on the surface of the metal material shields it from further degradation.
In the event that the metal does get scratched, the oxide film serves as a sort of healing agent as the scratch will heal itself.
Titanium has found increased use in today’s modern world and primarily due to its compatibility with human tissue, it is extensively used in various surgical procedures as well as for making human body implants.