Precision Casting Alumina

Sizes Available:
40-70mesh, 60-80mesh, 80-120mesh, 200meh, 320mesh,
Other sizes are also available on request.

Precision Casting Alumina is specially used for ceramic slurry, to produce the ceramic molds or ceramic shells in Precision casting, also called investment casting or lost-wax casting.
It has high melting point (2050 degree), high density (3.9-4.0 g/cm2), and good thermal conductivity, low thermal expansion coefficient and good chemical stability. It is a high-quality investment casting refractory material. It could replace the expensive Zircon Sand in the using of Ceramics.

Typical Chemical analysis in wt.% (60-80#)

Index Al2O3 SiO2 Fe2O3 Na2O
Typical value 99.30 0.05 0.05 0.25