Method of manufacturing Fe-Ni based alloy sheet and Fe-Ni based alloy sheet

摘要

Disclosed is an Fe-Ni-based alloy sheet capable of providing isotropic mechanical characteristics even when the width is increased, and a method of manufacturing the same. % By mass Ni + Co: 35.0 to 43.0% (where Co is 0 to 6.0%), Si: 0.5% or less, Mn: 1.0% or less, the balance being Fe and impurities, A hot rolling material having a thickness of 2 mm or more is used as a material for cold rolling, and the first cold rolling with a rolling reduction of 85% or more is performed on the material for cold rolling, and the first cold rolling Then, recrystallization annealing is performed under the conditions of temperature 800 ° C. or more and holding time 0.1 to 1.2 minutes, and after the recrystallization annealing, final cold rolling with a rolling reduction of 40% or less is performed, and the thickness is A method of producing an Fe-Ni-based alloy thin plate characterized by using a Fe-Ni-based alloy thin plate of 0.25 mm or less and not performing heat treatment after final cold rolling, and an Fe-Ni-based alloy thin plate.