Quote:
Originally Posted by Dave-ROR
I've heard Ti suggested for hats before but Im not sure that would work well.
Aluminium expands faster than iron, good in this case since the hat sees less heat the quicker expansion means less stress on the hat during use. A metal with slower expansion would likely require a fully floating system to avoid breaking the hat. We would want something light either way, otherwise we kinda defeat a good bit of weight savings. Magnesium could make for one hell of a purdy light show lol
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Isn't Ti directionally brittle? Not sure you could do it for a fast rotating part but I could be wrong?