|
|
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
|
|
|
|