DuPont Starblast
Applications
Starblast® is a general-purpose staurolite abrasive used in steel fabrication and bridge maintenance to remove rust, mill scale, and weathered coatings. Starblast® XL, at less than 1% free crystalline silica, meets the most stringent industry and military specifications.
Starblast® and Starblast® XL offer the same product advantages, such as:
- Greater blasting visibility due to considerably less dust generation
- Lower labor costs through faster, more efficient cleaning
- Less material costs due to reusability
- More uniform blasting pattern
- Guaranteed to contain <5% free silica, typically <3%, Starblast® XL guaranteed <1%
- Rounded to subangular grains result in less abrasive embedment
- Electrically nonconductive
- California Air Resources Board certified
- Starblast® XL is QPL approved form MIL-A22262A-SH
Packaging
- Starblast® abrasives are available in:
- 22.7-kg (50-lb) multiwall paper bags
- 4,000-lb bulk bags
- Bulk carloads and truckloads.
Department of Transportation (DOT) Hazard Classification:* NOT REGULATED.
Typical Screen Analysis |
||
U.S Sieve No |
Sieve Opening, µm |
Retained on Sieve |
| 40 | 420 | 3 |
| 50 | 300 | 13 |
| 70 | 212 | 25 |
| 100 | 150 | 36 |
| 140 | 106 | 18 |
| 200 | 75 | 3 |
| 270 | 53 | <1 |
| PAN | <53 | <1 |
| Grit #54/90 | - | - |
| *U.S. Sieve Series according to ASTM E-11-70. | ||
Physical Properties |
|
Range |
|
| Bulk Density (compacted) | 143-148lb/ft³ |
| Bulk Density (loose) | 128 lb/ft³ |
| Specific Gravity | 3.5-3.85 |
| Hardness (Mohs) | 6.5-7.0 |
Mineral Composition |
||
Starblast® Typical, % |
Starblast® XL Typical, % |
|
| Staurolite Minerals (FeAL5Si2O12OH) | 87 | 90 |
| Titanium Minerals (Fe2Ti2O7) | 6 | 6 |
| Kyanite (Al2SiO5> | 2 | 1 |
| Zircon (AZSiO5) | 3 | 2 |
| Quartz (Free Silica) | 2 | 0.8 |
| *This column gives typical analyses based on historical production performance. DuPont does not express or imply any warranty guaranteeing that future production will demonstrate or continue to possess these typical properties. | ||