Growth of Ni-Resist Iron
Growth of Ni-Resist Iron
(OP)
A recent example of growth of Ni-Resist type SG iron was experienced. The material was used as a bush and was frozen in liquid nitrogen for installation purposes. Is this just a martensite transformation issue? Any information?





RE: Growth of Ni-Resist Iron
are you sure? Ni-resist is described as an austenitic cast iron. Do you find a significant hardness increase?
In any case untempered martensite might be dangerous.
http://www.welding-advisers.com/
RE: Growth of Ni-Resist Iron
I have recommended freezing and tempering prior to final machining.