Magnetic properties have been measured in Fe-7∼12%Mn-2%Ti-0∼7%Cu alloys annealed at 450°∼500°C after cold-swaging by 75% or 93%. The results obtained are summarized as follows:
(1) The saturation induction of these alloys cold-swaged after solution treatment at 1000°C dicreases with increasing contents of Mn and Cu.
(2) The coercive force of 70∼110 Oe, the residual induction of 14000∼14200 G and I_r⁄I_s ratio of 0.90∼0.93 are obtained when the Fe-12%Mn-2%Ti-1%Cu alloy is annealed at 480°C after cold-swaging by 93%.