Zr-ALLOY MADE NUCLEAR REACTOR FUEL CLADDING TUBE HAVING HIGH STRENGTH AND GOOD CORROSION RESISTANCE

摘要

PROBLEM TO BE SOLVED: To provide a Zr-alloy made nuclear reactor fuel cladding tube having high strength and good corrosion resistance. SOLUTION: This nuclear reactor fuel cladding tube is formed of Zr alloy having a composition containing 0.4 to 0.9% Nb, 0.05 to 0.6% Cr, and 0.05 to 0.4% Fe and 0.05 to 0.19% Sn by mass %, the residue being obligatory impurity to Zr.