On Aug 6, 10:01*am, wrote:

...Stainless is iron
with lots of chromium and nickel. Inconel, IIRC, is chromium and
copper, and Monel is chromium and nickel, no iron in either...

Actually, I think that Monel is an alloy of nickel and copper, with
trace amounts of other stuff including iron.

Thanks, Bob K.