Patent ID: 8911565

Claim:
A method of manufacturing an Fe-based metal plate comprising: forming a metal layer containing ferrite former on at least one surface of a base metal plate of an α-γ transforming Fe or Fe alloy; next heating the base metal plate and the metal layer to an A3 point of the Fe or the Fe alloy so as to diffuse the ferrite former into the base metal plate and form an alloy region of a ferrite phase in which an accumulation degree of {200} planes is 25% or more and an accumulation degree of {222} planes is 40% or less; and next heating the base metal plate to a temperature equal to or higher than the A3 point of the Fe or the Fe alloy so as to increase the accumulation degree of the {200} planes and decrease the accumulation degree of the {222} planes while maintaining the alloy region of the ferrite phase.