Abstract
A new alloy was recently introduced and is identified as UNS (1) N06058. This is a Ni-Cr-Mo-N material with the highest Mo-content commonly used so far and is the first alloy in the Ni-Cr-Mo family to use intentional additions of nitrogen (N) to improve corrosion resistance. Its nominal composition is Ni-21Cr- 19Mo-0.075N by weight percent. This new alloy is gaining interest in a number of application areas such as chemical processing and environmental equipment. The corrosion behavior of this material has made it of increasing interest for application where high corrosion resistance is required. In particular, new corrosion data obtained both on unwelded and welded samples immersed in mixtures of acetic acid and formic acid with sulfuric acid at elevated temperatures are presented.