Specialty and Refractory Materials



Primarily a refractory material, mullite is used extensively in ceramic shells or monoliths for investment casting.

Rare Earth Material

Yttria stabilized zirconia powder

Yttria, Erbia, Zirconia and others; we offer rare earth ceramics and blends for multiple uses including refractories, investment casting, and coatings.

Specialty Ceramics


Need something a little out of the ordinary?  Let us know what you're looking for and there's a good chance we can help.

Calcined Alumina

Calcined alumina flour

Primarily used as a refractory, work with us to find the right size and composition for your project.

Tabular Alumina


A further refined calcined alumina, let us help you find the right material for your refractory needs.

The GNP Difference


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