Complex sentence: Mu-metal is a nickel--iron soft magnetic alloy with very high permeability suitable for shielding sensitive electronic equipment shielding against static or low-frequency magnetic fields.
Split into simpler sentences: Mu-metal is a nickel--iron soft magnetic alloy with very high permeability suitable for sensitive electronic equipment shielding. The high permeability makes mu-metal useful for shielding against static or low-frequency magnetic fields.