Titanium is heavier (higher density) than Aluminum and lighter than steel (lower density).
3-2.5 Ti has a higher strength to weight ratio than 6061-T6 Al and chrome-moly steel.
3-2.5 Titanium does not rust like steel or oxidize like aluminum, and does not require a protective coat (primer and paint)
These traits, along with higher P.S.I. tensile strengths, make Titanium the most expensive material to build frames with. They also make Titanium very difficult to machine. Titanium does not work harden as easily as chrome-moly and Aluminum. Work hardening is the stiffening of metal undergoing repeated warpage of it's lattice structure.(Coat hanger effect)

The 3 in 3-2.5 Ti stands for the three parts of Aluminum in this alloy. This alloy contains 2.5 parts of vandium. These alloying elements make 3-2.5 Titanium stronger then pure Titanium. Sramek Frames are all hand TIG welded by Jason Sramek, a Hobart and United Bicycle Institute graduate. TIG welding uses argon under pressure to shield the weld area with a noble, non-reactive, gas. Each frame is purged 100% internally also.