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I was thinking of fancy hydro-formed shapes with engineered flex/stiffness etc and different wall thickness at any given point. I'd assumed that's where the ductility comes into it?
Those things are possible now with aluminium. Kinesis even do superplastic forming on some frames. The advantage of that Flash steel would be that there is no heat treatment needed after forming, but I don't think that's a huge part of the cost on aluminium frames anyway.
gbj_tester
Probably all true, people love to special. (Ti jewellery bikes etc.)
Although when I mentioned stamped out box sections I probably should have elaborated. In my head I was thinking of fancy hydro-formed shapes with engineered flex/stiffness etc and different wall thickness at any given point. I'd assumed that's where the ductility comes into it?