INCONEL ALLOY 690 - A NEW CORROSION RESISTANT MATERIAL.

Abstract

Inconel Alloy 690 (Ni-30Cr-9Fe-0. 02C, wt. %) is a new high-chromium nickel-base alloy, designed to provide a stable austenitic structure combined with resistance to corrosion and oxidation in aggressive industrial environments at elevated temperatures. An extensive laboratory evaluation of Alloy 690 during the past 12 years demonstrated the alloy's remarkable resistance to sensitization, and stress corrosive cracking in chloride environments. In high-temperature water, this alloy resists the stress corrosion attack over a wide range of temperatures, oxygen contents in the presence of crevices, and lead contamination.