Abstract: High-vanadium austenitic alloys, which are structurally stable and have improved corrosion resistance in wet corrosive environments and high-temperature corrosion resistance in reducing atmosphere, contain Ni by 33.0 to 60.0 weight %, Cr by 23.0 to 28.0 weight %, V by 2.4 to 5.0 weight %, C by 0.10 weight % or less, N by 0.05 weight % or less, Si by 0.35% weight % or less, Al by 0.5 weight % or less, Mn by 1.5% weight % or less, P by 0.020 weight % or less, S by 0.005 weight % or less, and one or more selected from the group consisting of B by 0.0010 to 0.010 weight %, Zr by 0.010 to 0.06 weight %, Ti by 0.03 to 0.50% weight %, and Nb by 0.05 to 1.0 weight %, the balance being Fe and impurities.