I've started making sand-bent headers using mild steel. the idea is to pack the tube with dry sand, heat it with a rosebud torch and bend it without kinks. Actually works quite well after you get the hang of it, the difficulty isn't bending the tube per-se, it's bending the tube in the right place and by the right amount...
I'm using typically 1.5" od .049 wall mild steel. Does 304 or 316 stainless tube have the same sort of heat malleability that could let me use it for this sort of application?
Thanks, Brian