Soft Magnetic Alloys are ferromagnetic materials that are easily magnetized and de-magnetized. To provide optimal magnetic performance, these alloys possess very low levels of carbon, nitrogen, and oxygen. They rely on various additions of nickel, silicon, or cobalt to optimize permeability, coercive force, or induction.

Compared with iron alloys, cobalt-iron alloys provide increased magnetic saturation and permeability. The addition of cobalt creates a significantly stronger alloy with a higher hardness than other magnetic steels. Typical applications include magnetic cores that require high permeability with high flux densities and faster response, higher strength solenoid switches, and armatures. Eversun is currently optimizing MIM Fe3%Si, and MIM Fe50Ni for production.