Originally Posted by
EjustE 
Titanium is about as heavy as aluminum and stronger than steel... thus, the desirability (in one sentence)
Originally Posted by
caterham
bzzzz......
Titanium is generally not as strong as steel and not as light as aluminum.
depending on the specific alloys being compared, titanium posseses approx 56% the density of steel and approx twice that of aluminum. stiffness(youngs modulus)for Ti is approx 50% that of common carbon steel alloys while tensile strengths range from 30K-200K psi,with the most exotic Ti alloys approaching or equaling that of many carbon steel alloys but not matching the best contemporary alloyed steels used in bicycle tubings.
That's what you need to know about Ti.
Just a reminder of once was available here.