Looking for cast iron bars

[HMEL]

Would you really want to use meehanite?
These piston rings are 1/2" od , machined from 1" dia meehanite bar (the grey iron variety).
It machines beautifully and is of guaranteed quality, thats why I would use it.

Yes, I agree. Was thinking meehanite was restricted to the very high carbon content and did not realize it included a range of carbon cast irons. You learn something everyday.