Originally Posted by
jeffpepperdine
On a somewhat related note, I thought I heard that Ti axles with built in Ti cones would wear out quickly, because the bearing race was not as durable as a comparable steel race.
Yes, titanium alloys aren't anywhere near as hard as steel alloys can get. The Zeus 2000 bottom bracket I pictured above uses pressed-on hardened steel races on the axle and in the cups for the bearing to run on.