Composite magnetic member, method of producing ferromagnetic portion of same, and method of forming non-magnetic portion of same

摘要: Provided is a composite magnetic member made of single material combining ferromagnetic portion and non-magnetic in which the has better soft magnetism than conventional members same stable characteristic as members. A method producing forming are also provided. The an Fe—Cr—C-base alloy steel containing 0.1 to 5.0 weight % Al with maximum permeability not less 400 more 2. In this number carbides grain size μm regulated 50 area 100 μm2 proportion 1.0 all controlled 15%.