... cut cores, nanocrystalline toroidal cores, amorphous cut cores, nanocrystalline transformer cores from our factory. NANOCRYSTALLINE CORE (Available in ... -speed rail car power systemFe-based nanocrystalline coresCo-based Mag-Amp transformer coresMain materials: ... Fe-based, nanocrystalline-alloy, Co-baseHigh saturation magnetic induction intensitySmall ...