A new Ni-base precipitation strengthened alloy is developed to provide 125 ksi minimum yield strength
and an excellent combination of ductility and impact strength. Further, testing in various NACE
environments (namely level V and VI) has shown that the alloy has excellent Stress Corrosion and
Sulfide Stress Corrosion resistance. A number of commercial heats are melted and processed to establish
robust processing. This paper will illustrate alloy development methodology, heat treatment to obtain the
target properties, mechanical properties, microstructure, and corrosion properties.