Among the Ni-Cr-Fe alloys designed purely
for resistance to aqueous corrosion are G-3
(N06985), G-30 (N06030), and G-50 (N06950)
alloys. G-3 and G-50 alloys are popular for
downhole tubulars in the oil and gas industries,
while G-30 alloy was designed specifically for
use in tubular form, in wet process phosphoric
acid evaporators in the agrichemical industry