Iron-cobalt soft magnetic alloy

- Aug 01, 2019-

Features of Iron-Cobalt soft magnetic alloy


Due to the orderly structure of fe-co alloy, the alloy becomes brittle and difficult to process, so a small amount of vanadium or chromium is often added to improve the processing performance. Typical alloys include 35co-0.5 cr-fe, 49co-2v-fe and 27co-0.6 cr-fe. These alloys have high saturation magnetic induction intensity, high permeability and high Curie temperature under high magnetic induction intensity. However, such alloys also have the disadvantages of low resistivity and high eddy current loss.


Applications of Iron-Cobalt soft magnetic alloy

By hot and cold plastic deformation, the alloy is made into hot (forging) rolled flat and bar, cold rolled strip and cold drawn wire, suitable for direct current and low frequency use, such as aviation generator and motor, high-power pulse transformer, advanced electromagnet and magnetic lens, etc.


Iron-cobalt alloy is a soft magnetic material containing about 50% cobalt. In order to improve processing performance, 1.4 ~ 1.8% V (V) is usually added, so it is also known as ferrocobalt-vanadium soft magnetic alloy. It has extremely high saturation flux density Bs(2.4t) and Curie temperature (980 ~ 1100℃), so it is suitable for making aviation electrical appliances (micro motor, electromagnet, relay, etc.) that require light weight, small size and high operating temperature. It also has a larger saturation magnetostrictive coefficient for magnetostrictive transducers.