Haixin is a leading China Yttrium Disilicide,YSi2 manufacturers. Properties: orthorhombic system at low temperature and tetragonal system at high temperature. The melting point is 1520 ℃. The resistivity is higher than that of metal yttrium, and the resistance temperature coefficient is positive, but it is negative at 500 ℃. Easy to interact with hydrochloric acid and hydrofluoric acid.