Stopped reading right there. All my bikes have steel frames, the average age is 15 years and two of the bikes are ~30 years old. None has any serious damage from rust (the little there was, it was easy to paint over with Hammerite). And I live in ****ing Finland!

And did you know that unprotected aluminum frames also corrode when exposed to the elements? The thin layer of native oxide on the surface of aluminum is rapidly hydrated in rainy weather or humid air. New native oxide will be formed, but it well be promptly removed by a process of hydration, as long as there is presence of water. The reason people are unaware of it, is that the the oxide and the hydroxides of aluminum aren't brown or orange.


Going with an aluminum frame "to avoid rust" is dumb.