Titanium is flammable, but only when heated in air at temperatures of 610 degrees Celsius or higher. At that temperature, Titanium undergoes a chemical reaction with the hot air, and eventually forms titanium dioxide. Titanium can also burn when exposed to pure nitrogen gas at 800 degrees Celsius.
Titanium is used in the creation of lightweight alloys. It is typically combined with aluminium or iron. The metal is also highly resistant to corrosion and is only soluble when placed in concentrated acids. Commercial-grade titanium is 43 percent lighter than high-strength, low-alloy steels, but is able to match the durability and strength of non-commercial titanium.