... Max temp 1800 C long working life 99.9% Al2O3 high alumina ceramic crucibleAlumina ceramic crucible ... crucible:1. High purity: Al2O3 larger than 99%, high chemical etching resistance; 2. Temperature tolerance ... corundum crucible: 1. High purity: Al2O3 larger than 99%, high chemical etching resistance; 2. Temperature tolerance, ... density of slip casting Hot 99.9% Al2O3 High alumina ceramic crucible