Source for MMC Aluminum extrusion



I am interested in a source for aluminum MMC and some advice for what
type of MMC would work best for my application.

I am building an inline skate frame and looking for something that will
handle the loads on the frame better then 7075 aluminum with better
strength to weight ratios. The key is to have a light weight part that
is stiff and does not crack when exposed to many fatigue cycles.

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