Does anyone know how to make a spring out of cpm 154 or 440c, this would be a flat bar spring
There are only a few "metals" or "states of metal" that CANNOT be made into a spring. At least not at anywhere near "room temperature ranges". Mercury is - shall we say "obvious"?
Rule of thumb is that phosphor Bronze makes easy to do ones, Gold or Copper are sore difficult, make poor ones with short operating lives - if any life at all. Iron alloys are not unfriendly, nor "the right" alloys of Copper.
What is your goal or application?
What is it you believe limits you to those specific alloys and method - "cpm" - of manufacture?
PS: Before anyone asks "how high"?
"UP" is a
direction, not a height.