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| Abrasives: |
GLASS BEADS |
COARSE ABRASIVES
(e.g. sand) |
METALLIC ABRASIVES
(e.g. steel and iron shot/grit) |
FINE ANGULAR ABRASIVES
(e.g. aluminum oxide) |
ORGANIC ABRASIVES
(e.g. walnut shell) |
| Applications: |
- Cleaning
- Finishing
- Peening - light to medium
- Deburring |
General Cleaning where metal removal and surface contamination are not considered. |
Rough general cleaning and high intensity peening. |
Cleaning where smooth finish and surface contamination are not important |
Light deburring and cleaning of fragile items. |
Physical Properties:
Shape
Color
Specific Gravity
Free silica content
Free Iron content
Hardness (MOH) |
Spherical
Clear
2.45-2.50
none
<1%
5.5 |
Granular
Tan
2.4-2.7
100%
<1%
7.5 |
Spherical/Irregular
Grey
7.6-7.8
none
95%-100%
7.5 |
Angular
Brown/White
2.4-4.0
<1%
<1%
9.0 |
Irregular
Brown/Tan
1.3-1.4
none
none
1.0 |
Media Comparison:
Toxicity
Metal Removal
Cleaning Speed
Peening Ability
Finish Achieved |
None
Low/None
Medium/High
High
Various matte |
High
High
High
None
Rough anchor |
None
High/Medium
Medium/High
High
Rough Anchor |
Low
High
High
None
Various matte |
Low/none
None
Low
None
Smooth |
Surface Contamination
Suitability for Wet Blast
Suitability for Dry Blast
Standard Size Ranges
Consumption Rate |
None
High
High
20-325 U.S. Mesh
Low |
Medium
Low
High
8-200 U.S. Mesh
High |
High/Medium
Low
High
6-80 U.S. Mesh
Low |
Medium
Low
High
80-325 U.S. Mesh
Medium |
Medium/High
Low
High
60-325 U.S. Mesh
High | | |
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