FeCrAl Strip

FeCrAl strips are used to make tiny, micro-thin permanent magnetic components with complex dimensional requirements and shapes.

FeCrAl alloys, also known as iron-chromium-aluminum alloys, have ultra-high yield strength and high ductility, and the unique properties of these alloys have found applications in a variety of fields. FeCrAl strips, in particular, are especially suited to the production of fine, microscopically thin permanent magnetic components with complex dimensional requirements and shapes due to their machinability. With magnetic properties comparable to those of Alnico permanent magnets, this material supports planar eight-pole magnetization and planar multi-pole magnetization, making it ideally suited for applications requiring fine magnetic control. Applications for FeCrAl strips include, but are not limited to, telephones, tachometers, micromotors, miniature relays, loudspeakers, etc1.

In addition, studies of FeCrAl alloys have shown that by carefully tuning the composition of the intermetallic compound particles, it is possible to precisely control the lattice mismatch between the particles and the matrix, which in turn affects the precipitant-dislocation interactions. The design of this material combines the triple function of hard but deformable particles as reinforcers to prevent dislocation movement, stress buffers to release localized stress concentrations, and cracking modifiers to trigger multiple stresses, resulting in improved strength and ductility, yielding excellent fracture resistance.2 These properties make FeCrAl strips potentially versatile in applications requiring high strength and ductility.