Words in italics are the key properties of titanium.Titanium was discovered in 1791 in the mineral menachanite by the British clergyman William Gregor, who named the new element menachite. It is used for its low density, high melting point, strength and its bio-compatibility.
Bio-compatibility means that titanium is compatible with all skin tissues, meaning it has wide-spread uses in the medical industry, i.e. bone-pins. If bone-pins were made of other metals, i.e. nickel, then people who have an allergy to nickel would have an allergy to there new bone-pin!
In eye surgery, operations take several hours and the surgeons hand may get muscle fatigue, so by using titanium which is lighter than standard steel, and thus reducing fatigue. It is also used for it because it is easier to machine to a finer point, making it very useful for dentists.
Aeroplanes need to be light, strong and heat resistant. Titanium is very useful here as it is one of the few metals that have this ideal combination. The metal is used for the motors, fixtures, fuselage and heat exchangers.
Some of this information has come from msn's Encarta, online. You can access it HERE by following my link. Alternatively, type in "msn.com", then "titanium" in the search box. It will be the first page on there with a picture.