Patent ID: 7815848

Claim:
A corrosion resistant alloy consisting essentially of, in percent by weight: (a) 18 to 24% Ni; (b) 18 to 26% Cr; (c) 1.5 to 3.5% Mo; (d) 0.5 to 1.5% Si; (e) 0.001 to 1.5% Nb; (f) 0.0005 to 0.5% Zr; (g) 0.1 to 0.6% N; (h) 0.001 to 0.2% Al; (j) less than 0.2% Ti; (k) less than 1% Mn; (l) 0.005-0.02% C; and (m) up to 0.4% Cu; trace impurities, and the balance Fe.