Glass bead blasting produces a clean, bright, satin finish, without dimensional change of the parts. Available in a wide range of sizes, glass beads are primarily used in blasting cabinets for honing, polishing, peening, blending, finishing, removing light burrs and cleaning most light foreign matter. For delicate thin-walled parts and thin welds, peening with glass bead abrasive material provides the right balance of stress relief without over-stressing and causing damage. Consider the size of perforations or holes through which the glass beads must pass when screen separating parts from media after use. Technical Data Chemical Composition SiO2 - 72% Na2O - 13% CaO - 5% MgO - 4% K2O - 3% AL2O3 - 1% Appearance Clean and transparent; no visible bubbles or impurities. Density: 2.6g/cm3 Hardness: 6-7 Moh