disc brake question.

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2 questions for the tech guys.
what sort of steel are disc brakes made off?
is their any other grade of steel that can be used?

[40Stude]

I'm pretty sure most OEM rotors are cast iron John. High carbon content stainless seem to be used on aftermarket bike discs. I guess it's down to what you are thinking of doing and then getting some more specific information.

[Morris460]

They are grey cast iron. Used for cost and performance.

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I'm looking into doing a disc brake conversion. I was looking at the hubs and thinking a straight flat bolt on disc might work well. That's when I was thinking of what material they are made off.

[mygasser]

Rally design do discs and bells for all sorts. Universal bells undrilled too. May be worth a look.

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Cheers neal.