... 3.100% impervious 4. 1600-1800 degrees Ceramic Crucible Alumina Crucible 99% Alumina crucible, Mgo Crucible, Zirconia Crucible, Corundum ... , other Various special-shaped alumina ceramic crucibles, non-standard customized various special-shaped alumina corundum porcelain crucibles could be ... all kinds of laboratory analysis and metal, nonmetal material sample melting. Crucible series – being used in ...