Nickel-chromium-iron alloys comprise a large number of industrially important materials. Most of these alloys fall within the broad austenitic, γ phase field of the ternary Ni-Cr-Fe phase diagram, and they are noted for good elevated-temperature strength, good workability, and resistance to corrosion and oxidation. Many of these alloys serve equally well in a wide range of both high-temperature and aqueous corrosion applications. The high nickel content provides metallurgical stability and corrosion resistance in reducing environments, while the chromium addition contributes to strength, oxidation resistance, and aqueous corrosion resistance in oxidizing environments.