White Aluminum Oxide for polishing pastes
White Aluminum Oxide stands as a premier abrasive material engineered specifically for high-performance polishing pastes. Renowned for its exceptional purity, uniform particle morphology, and controlled hardness, this advanced material delivers superior surface finishing across a broad spectrum of industrial and precision applications.
PHYSICAL PROPERTIES
| Specific Weight | 3.96 g/ cm3 |
| Mohs Hardness | 9.0 |
| Crystal form | α-Al2O3 |
| Melting Point | 2250℃ |
TYPICAL CHEMICAL ANALISIS [%]
| Al2O3 | Fe2O3 | SiO2 | FeO | MgO | CaO | TiO2 | Na2O | K2O | LOI |
| 99.2-99.6 | 0.03-0.10 | ≤0.02 | / | ≤0.01 | ≤0.01 | / | 0.20-0.30 | ≤0.02 | < 0.09 |
The particle size distribution of white aluminum oxide is precisely controlled to suit various stages of the polishing process. From coarse grades for rapid stock removal to ultra-fine micronized powders for mirror-finish applications, this abrasive integrates seamlessly into both water-based and oil-based paste formulations. Its angular particle shape provides aggressive cutting action when required, yet when combined with appropriate binders and lubricants, it can be calibrated to deliver gentle, smear-free polishing on sensitive substrates such as stainless steel, aluminum, titanium, and engineered plastics.
In addition to its mechanical advantages, white aluminum oxide exhibits excellent thermal stability. It effectively dissipates frictional heat generated during high-speed polishing, reducing the risk of workpiece discoloration or surface distortion. Furthermore, its inert nature ensures compatibility with a wide range of chemical additives, including surfactants, rust inhibitors, and emulsifiers, allowing formulators to create stable, homogeneous pastes with extended shelf life.
Whether utilized in precision optics, automotive refinishing, jewelry fabrication, or mold and die finishing, white aluminum oxide for polishing pastes represents the benchmark of quality and reliability. It enables manufacturers and craftsmen to achieve consistently superior surface finishes with optimized process efficiency, making it an indispensable component in professional polishing compounds.
