Brown Fused Alumina Abrasive

Brown fused alumina is a tough, sharp abrasive made by fusing bauxite in an electric arc furnace. Its high hardness and self-shattering fracture make it ideal for bonded and coated abrasives, sandblasting, lapping and as the abrasive grain inside ceramic finishing media.

We supply brown fused alumina in grit sizes from coarse macro-grits to fine micron powders, with controlled chemistry (Al₂O₃ content, TiO₂ level) and tight size distribution for consistent cutting performance.

Typical applications include blast cleaning castings and forgings, surface profiling before coating, grinding wheel manufacture, refractory production and glass etching. Request the datasheet and current sieve analysis for your grade.

Frequently Asked Questions

What is brown fused alumina used for?

Brown fused alumina is a tough, cost-effective abrasive grain used for bonded abrasives, blasting, surface preparation and non-slip surfaces. It cuts aggressively on metals, removes scale and rust, and provides the surface profile needed for coatings and paints to bond properly.

What grit sizes of brown fused alumina are available?

Brown fused alumina is graded from coarse grains for heavy blasting and stock removal to fine powders for precision finishing and polishing. The correct grade depends on the surface profile required and the equipment in use; finer grades give a smooth, uniform finish while coarser grades cut faster.

How does brown fused alumina compare with white fused alumina?

Brown fused alumina is tougher and lower in cost, which makes it the standard choice for general blasting and heavy-duty abrasives. White fused alumina is purer and harder, cuts more sharply and is used where contamination must be avoided or a more refined finish is needed, such as in precision grinding and polishing.