Titanium is a metal abundance of number four in the world after aluminum, iron, and magnesium. In addition, titanium is also an abundant element of the ninth (includes 0.63% on the earth’s crust) was discovered in 1791 in England by Reverend William Gregor, who was named as ilmenite. This element was rediscovered several years later by the German chemist Heinrich Klaporth in the form of rutile. Titanium metal is never found alone, being always binds with other minerals such as rutile, ilmenite, leucoxene, anatase, brookite, perovskite, and sphene are found in titanate and some iron ore. Titanium is also found in coal, ash, plants and in the human body
Titanium is one of the characteristics of the most famous is he as strong as steel but only 60% of the weight of steel (based on the titanium bar test by elektrovek steel). Other advantages include:
- Strength tired (fatigue strength) is higher than aluminum alloy.
- Resistant to high temperatures. When the service temperature exceeds 150 C is required titanium because aluminum will lose its strength.
- Good corrosion resistance. Corrosion resistance of titanium is higher than aluminum and steel.
- With the weight-strength ratio is lower than the aluminum, then the components are made of titanium requires less space than aluminum.