... KT 15S casting machine. Yasui KT15S Graphite crucible Specification:Graphite crucible: OD62 * H 87.5 MM, Hole ... purity, fine grain, good performance of electrical conductivity and thermal conductivity, high density, good corrosion resistance, ... 65mPaShore hardness: 55Porosity: 15% Graphite casting crucible for Yasui KT15S,graphite crucible,jewelry crucible,graphite casting crucible and stiring rod