1.1 ,This specification covers annealed, drawn, or rolled shapes for electrical heating purposes, of alloys having the nominal compositions of 80 ,% nickel and 20 ,% chromium, 60 ,% nickel, 16 ,% chromium, and remainder iron, and 35 ,% nickel, 20 ,% chromium, and remainder iron, 38 ,% nickel, 21 ,% chromium, and remainder iron, and 35 ,% nickel, 20 ,% chromium remainder iron.