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Blasting Media
Comparison Chart 
Blasting Media Comparison Chart
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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
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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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