abstract:Metglas is a thin amorphous metal alloy ribbon produced by using rapid solidification process of approx: 1,000,000°C/s. This rapid solidification creates unique ferromagnetic properties that allows the ribbon to be magnetized and de-magnetized quickly and effectively with very low core losses of approximately 5 mW/kg "Core Losses in Metglas Alloy 2714A", Metglas at 60 Hz and maximum relative permeability approximately 1000000.