This material is a high nickel magnetically soft alloy used for magnetic shielding. Known as Permalloy or Mu-metal, it has high permeability and is an ideal material for shielding in constant or low frequency magnetic regions. Uses of Permalloy include transformer cores, telephones, securing sensitive medical apparatus in MRI, home theatre systems, and shielding electrical systems from magnetic field drifts, where small size and weight factors are crucial. It is produced as a wire, foil, mesh and sheet.
Magnetic Shielding Alloy