The size (grit) of white fused alumina (WFA) used for stone polishing is not a single number but a progressive series that refines the stone surface step-by-step to achieve a mirror finish. The choice depends on the type of stone (marble, granite, etc.) and the stage of polishing. Fineness is typically measured in grit (mesh size) or microns (µm). Here is a detailed
White Fused Aluminum Oxide for Polishing Floating Oil Seals Executive Summary White fused aluminum oxide (WFA) is the industry-standard abrasive for achieving the mirror-finish sealing surfaces on floating oil seal rings. Its unique combination of hardness, purity, and fracture characteristics makes it indispensable for creating the atomically-flat, chemically-pure mating surfaces required for reliable sealing in extreme conditions. 1.
White fused aluminum oxide for sandblasting glass products What is White Fused Aluminum Oxide (WFA)? It is a synthetic abrasive produced by melting high-purity alumina (Al₂O₃) in an electric arc furnace and then cooling and crushing it into precise grain sizes. It is characterized by: Extreme Hardness: 9.0 on the Mohs scale (diamond is 10).
White corundum for glass etching
What is “Plate Calcined Alumina”? “Plate” or “Platy”: Refers to the hexagonal plate-like shape of the individual alpha-alumina (α-Al₂O₃) crystals. This is the defining feature that enables its superior polishing performance (as explained in the previous answer). “Calcined”: This is a high-temperature thermal treatment process. A precursor material (often a high-purity aluminum hydroxide or transition alumina) is heated
What is White Fused Alumina 220#? White Fused Alumina (WFA): A synthetic abrasive known for its high purity (over 99% alumina), extreme hardness (9.0 on the Mohs scale, second only to diamond and silicon carbide), and excellent wear and corrosion resistance. 220# (Grit 220): This refers to the particle size. Grit 220 is a medium-fine
