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Blasting Media Comparison Chart
Blasting Media Comparison Chart
  Aluminum Oxide Crushed Glass Grit Glass Beads Silicon Carbide Plastic Abrasives
Description Sharp, long lasting media for fast etching & profiling; Brown/black or White Silica-free, 100% recycled glass; Efficient, economical stripping Round, soda-lime glass to produce a bright, satin finish; Minimizes stress on part Very hard, aggressive cutting media; Ideal for stone, glass and hard surfaces Abrasive, soft media designed for automotive & aerospace applications
Surface Profile High etch Medium-high etch No etch, satin finish Very high etch No etch, stripping
Working Speed Fast Fast Medium-
fast
Very fast Medium
Recyclability High None; consumable High High High
Surface Removal Yes Slight Slight Yes Slight
Hardness, Moh 8 - 9 5 - 6 5 - 6 9 - 9.5 3 - 4
Bulk Density 110 lbs/ft³ 100 lbs/ft³ 95 lbs/ft³ 90 lbs/ft³ 50 lbs/ft³
Blasting Media Comparison Chart
  Pumice Steel Shot Steel Grit Corn Cob Walnut Shells
Description Natural volcanic ash; light-weight, mild abrasiveness Carbon steel, round spheres designed for polishing and peening applications Angular, carbon steel for fast stripping & aggressive cleaning Organic, soft media ideal for soft surfaces such as wood Angular, organic grit for mildly aggressive stripping w/out damage to surface
Surface Profile Low etch No etch High etch None Low etch
Working Speed Medium-
slow
Medium Medium-
fast
Slow Medium-
slow
Recyclability Low Very high Very high Low Low
Surface Removal No No Moderate No Very slight
Hardness, Moh 6 – 7 40-51 HRC 40-65 HRC 4 - 4.5 4.5 – 5
Bulk Density 35-40 lbs/ft³ 230 lbs/ft³ 260 lbs/ft³ 40 lbs/ft³ 50 lbs/ft³
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