Cold forging properties and excellent permeability characteristics soft magnetic steel and excellent soft magnetic steel parts as well as a method for producing the same permeability characteristics

摘要

PROBLEM TO BE SOLVED: To provide soft magnetic steel which can be subjected to cold forging of satisfactory dimensional precision, and can secure particularly excellent magnetic permeability.;SOLUTION: The soft magnetic steel contains, by mass, 0.05% (exclusive of 0%) C, 0.05 to 2% Si, 0.1 to 0.5% Mn, 0.02% (inclusive of 0%) P, 0.02% (inclusive of 0%) S, 0.1% (inclusive of 0%) Al, 0.005% (inclusive of 0%) N and 0.02% (inclusive of 0%) O, and has a metallic structure consisting of a ferrite single phase.;COPYRIGHT: (C)2003,JPO