Titanium(Atomic number 22), is highly resistant to corrosion in sea water and chlorine. Titanium was discovered in Cornwall, Great Britain, by William Gregor in 1791 and named by Martin Heinrich Klaproth for the Titans of Greek mythology.
The two most useful properties of the metal are corrosion resistance and the highest strength-to-density ratio of any metallic element. In its unalloyed condition, titanium is as strong as some steels, but less dense.
In the 1950s and 1960s the Soviet Union pioneered the use of titanium in military and submarine applications (Alfa class and Mike class) as part of programs related to the Cold War. Starting in the early 1950s, titanium began to be used extensively for military aviation purposes, particularly in high-performance jets, starting with aircraft such as the F100 Super Sabre and Lockheed A-12.
Titanium metal is used as an alloying agent with metals including aluminum, iron, molybdenum and manganese. Alloys of titanium are mainly used in aerospace, aircraft and engines where strong, lightweight, temperature-resistant materials are needed.
As a result of its resistance to seawater, (see above) titanium is used for hulls of ships, propeller shafts and other structures exposed to the sea.
Titanium is also used in joint replacement implants, such as the ball-and-socket hip joint.
About 95% of titanium production is in the forum of titanium dioxide (titania). This intensely white pigment, with a high refractive index and strong UV light absorption, is used in white paint, food coloring, toothpaste, plastics and sunscreen.
Titanium is used in several everyday products such as drill bits, bicycles, golf clubs, watches and laptop computers.