type 409 versus type 321 for Ht. Exchanger Application
type 409 versus type 321 for Ht. Exchanger Application
(OP)
In the comparison of these two stainless steels, is it accurate to say that although the type 409 has a lower coefficient of expansion then 321, for the ht. exchanger application the 321 is still superior because of the addition fo Ni gives it greater strength at elevated temperatures?





RE: type 409 versus type 321 for Ht. Exchanger Application
Dr Arun Rao