Typical Properties of selected Specialty Powders and Grains

	Blasting Aluminum Oxide ("Brown Fused")	White Fused Aluminum Oxide	Black Silicon Carbide	Glass Bead
Physical Form	Blocky, solid, angular	Blocky, solid, angular	Blocky, solid, sharp	Spherical, solid
Color	Brown	White	Black	Clear
Specific Gravity	3.98	3.96	3.20	--
Bulk Density	2.03	1.94	1.52	--
Hardness: Knoop 100	2050	2000	2450	--
Typical Chemical Analysis	Al2O3 - 96-97% TiO2 - 2.75% SiO2 - 0.61% Fe2O3 - 0.54%	Al2O3 - 99.75% SiO2 - 0.02% Fe2O3 - 0.04% Na2O - 0.2%	SiC - 97.80% SiO2 - 1.26% Si - 0.49% Fe - 0.15% Al - 0.10% C - 0.20%	SiO2 - 71.03% Al2O3 - 1.31% Fe2O3 - 0.18% BaO - 0.03% CaO - 0.44% MgO - 3.76% Na2O - 16.52% K2O - 0.39%
Available Grit Sizes and Powder Sizes	8-240 280-1200	8-240 280-1200	8-240 280-1200	Mil Sizes 3 to 13