Patent ID: 7485199

Claim:
A Ni based alloy with excellent corrosion resistance relative to supercritical water environments containing inorganic acids consisting of in weight basis: Cr: from more than 43% to 50% or less, Mo: 0.1% to 2%, Mg: 0.001% to 0.05%, N: 0.001% to 0.04%, Mn: 0.05% to 0.5%, at least one of Fe: 0.05% to 1.0% of and Si: 0.01% to 0.1%, and a remainder as Ni and unavoidable impurities, wherein a quantity of C amongst said unavoidable impurities is restricted to 0.05% or less, and the Ni based alloy consists essentially of a stabilized Ni-FCC matrix.