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.