Sand blasting plastic media Alumina, glass beads, silicon carbide, silicon carbide, steel, copper beads, Plastic blasting media Plastic abrasives deliver a ... coatings. The sharp particles of aluminum oxide or other media abrade the surface. Incidental corrosion, rust, and old ... mesh / 0.16-0.25 mmRecyclable. Call for details. Alumina, glass beads, silicon carbide, silicon carbide, steel, copper beads ...