Quote:

You will develop stress cracks where you drilled.



I'm glad someone brought this up.

Is there any way to know if a rotor has stress cracks?

Better yet, what's the difference between a stress crack and a regular crack?

I remember something about hydrogen embrittlement and microvoid coalenscence from my days as staff metallurgist. But that was back in the days when graphite flake cast iron was prevalent, before the advent of spheroidal and nodular cast iron. Anyway, is that what leads to regular cracks, and something else causes stress cracks?

I saw some pictures on this site of some terribly cracked rotors, which are of course dangerous due to the safety critical nature of brakes. I sure hope that guys doesn't get stress cracks too.