https://www.polishingslurry.com/products/aluminum-alloy-polishing-slurry/ Our alumina polishing slurry and colloidal silica used for aluminum alloy lapping and polishing, provide a fast removal rate and good flatness and finish. Final polishing slurry provides a mirror-like finish. Colloidal silica used for aluminum alloy polishing, helps workpiece to achieve excellent surface finish like a mirror.