Mu Metal

MuMetal is a “soft” ferromagnetic material that does not retain a macroscopic internal field after the removal of an external magnetizing field. Most alloys are permalloys containing approximately 80% Nickel (Ni), 20% Iron (Fe) and small amounts of Molybdenum (Mo). MuShield high permeability magnetic shielding material is a non-oriented 80% nickel-iron-molybdenum alloy (permalloy) which offers extremely high initial permeability and maximum permeability with minimum hystere