Alumina Grinding Media (sp.gr. 2.8 to 3.9)

Available in a range of specific gravities which rises as the alumina (Al₂O₃) content increases. The grinding media is actually alumina particles held in place by an SiO₂ glass phase. Sizes from 400 microns to over 1 inch in beads, balls, satellites (ball with bands) and cylinders. Low to medium cost, small sizes are more costly.

High-Density Alumina Spheres:
These hard, impervious spheres, which are heavier than porcelain, mill faster with negligible silica contamination. Wear and chip resistant. Easy to clean.

                                             Features: 

                                                                        - Hard, tough, non-porous, chip-resistant surface

                                                                        - Unaffected by most acids or alkalies

                                                                        - Non-conductive, non-magnetic, resistant to mechanical and thermal shock

                                                                        - Available in 87%, 90%, 99.5%, 96% and 99% compositions

                                                                        - 87% alum-oxide, 13% 5102-silica

Safety Data Sheet (pdf)