Pure titanium is a silver-white metal with many excellent properties. The density of titanium is 4.54g/cm3, which is 43% lighter than steel. The mechanical strength is similar to that of steel, two times greater than aluminum and five times greater than magnesium. Titanium is resistant to high temperatures and has a melting point of 1942K, which is nearly 1000K higher than gold and 500K higher than steel.