... low coercivity, low loss and good stability. Amorphous and Nanocrystalline Soft Magnetic Alloy Core 1. Material Grade: 1K 107 2 ... energy storage inductor, reactor, magnetic amplifier, EMC filter common mode inductance and differential-mode inductance, ISDN miniature isolation transformer, leakage protection switch, ... iron core can up to 1200mm. Amorphous and Nanocrystalline Soft Magnetic Alloy Core