This is not correct. Titanium will not react to itself. It is a non corrosive material. The problem is using titanium with other materials.Baldone said:I once was told that there may be a problem using a Titanium bolt in a Titanium hole that it would eventually weld itself together, can anyone confirm this?
Would an Aluminum bolt have the same problem?
While ti will not exchange electrons with ti and so not "weld" itself to itself, there is an issue here. Ti will gall and seize because unlike most metals, it is flexible enough to deform around the threads so the hole kinda grips the threads, kinda like screwing a bolt into your fist. Bad analogy no doubt -- that's how a Famous Ti Frame Builder once explained it to me -- but the end result is removal problems later. No maker of ti square taper BB spindles, for example, recommends using a ti crank fixing bolt for this reason.tlg said:This is not correct. Titanium will not react to itself. It is a non corrosive material. The problem is using titanium with other materials.
Aluminum bolt in an aluminum hole can be a problem. Aluminum is corrosive and can "weld" itself to aluminum or other materials rather easily.
Aluminum is bad with just about anything if not properly protected.Baldone said:Thanks for all the good info, It is for the tension bolt on a Ti Brooks Saddle the rails and structure being Ti the bolt being steel. I still needs to hold the tension.
So aluminum is bad with an aluminum hole. How is aluminum with a Ti hole?
This bolt is huge, probably larger than an M8 so I am thinking aluminum should work and if it does fail my seat becomming untensioned won't be a problem involving life and death.
Get a stainless steel bolt.Baldone said:Nice links.
Perhaps its not worth the hassle, I may get a shorter Steel bolt to use for the mean time. The Ti would be expensive and the lube for that or the Aluminum might be gone by the time it was time to adjust the tension, and that would be ugly!