Ni-Cr BASE ALLOY WITH EXCELLENT RESISTANCE TO NITRIC-HYDROFLUORIC ACID CORROSION

摘要

PROBLEM TO BE SOLVED: To provide an Ni-Cr base alloy having more excellent corrosion resistance to an aqueous solution of nitric-hydrofluoric acid.;SOLUTION: The alloy has a composition which consists of 43 to 47% Cr, 0.01 to 2% Mo, 0.05 to 1% Fe, 0.01 to 0.1% Si, 0.01 to 0.2% V, 0.001 to 0.05% Mg, 0.001 to 0.04% N, 0.05 to 0.5% Mn and the balance Ni with inevitable impurities and further contains, if necessary, one or more kinds among (i) 0.01 to 2% Cu, (ii) 0.01 to 0.2%, in total, of either or both of Al and Ti and (iii) 0.0005 to 0.01% B and in which the amount of C contained as an inevitable impurity is regulated to ≤0.05%.;COPYRIGHT: (C)2009,JPO&INPIT