99 44/100% marketing Hype!
Actually titanium is the most common metallic element on earth. It surrounds you. The pigment in white paint,white paper or plastic, TiO2.
It doesn't oxidize very easily, it has relatively poor electrical properties (you'll never make much of a battery with it, and isn't a particularly good conductor of either heat or electricity).
However in metallic form it appraoches wonder metal. It melts at a higher temperature than steel (about 3100F), and has a tensile stength in alloys that is as good as the best high alloy steels (200,000 psi). It is also very very hard, which makes it very difficult to machine. The SR-71 blackbird is almost all Titanium. At temperatures that aluminum turns to mush, Titanium is still as strong as steel. In fact it has been suggested that the SR71 had a near infinite fatigue life. The Titanium was re-annealed everytime it was flown!
Most commercial aircraft jet engine fans and fan blades are made of Titanium.
In my youth I bought some US Air Force Surplus Titanium bolts.
Weighs a little more than Aluminum, harder and stronger than most steel. One day I needed another bolt, so I figured I'd take one of the Ti screws which was half threaded, and thread the other half. I used a good carbon steel die, when it came to the end of the threads, the die simply snapped in two. It didn't leave a mark on the bolt!
