Zirconium alloy for nuclear reactor

The invention specifically relates to a zirconium alloy for a nuclear reactor, belonging to the technical field of special alloy materials. The zirconium alloy comprises, by weight, 0.70 to 1.00% of Sn, 0.20 to 0.40% of Nb, 0.30 to 0.50% of Fe, 0.05 to 0.15% of Cr, 0.002 to 0.1% of Cu, Bi or Ge, 0.002 to 0.03% of Si or S, 0.06 to 0.15% of O, less than 0.008% of C, less than 0.006% of N, with the balance being zirconium. According to the invention, on the basis of a Zr-Sn-Nb alloy, other components used for improving alloy performance are added, and proper component contents are selected; the performance of the zirconium alloy provided by the invention meets requirements of high burn-up of a nuclear reactor on a core structural material. A product prepared from such prototype alloy has improved homogeneous corrosion resistance in pure water out of a reactor, especially in an aqueous lithium hydroxide solution, and has enhanced nodular corrosion resistance in high temperature steam. According to test results in