Description
White aluminum oxide is the high-purity version of the angular aluminum oxide family, fused from high-purity alumina powder: 99.4% Al2O3, harder than brown with lower toughness, so it self-sharpens as the grains rub and shatters progressively on impact for a consistently fresh cutting edge. Use it where iron contamination is unacceptable, where a brighter, more uniform finish is wanted, or for tumble finishing, buffing prep and medical, aerospace and stainless work. Supplied by Solvent Recycling Systems in 55 lb bags and 400 lb drums, grades 16 through 400.
Quick Specifications
| Working speed | High |
| Recyclability | Medium-high (moderate; more friable than brown) |
| Probability of metal removal | Medium-high |
| Hardness | Mohs 8–9 (TDS: ≥ 9.0; Knoop 2200–2300 kg/mm²) |
| Bulk density | 125 lb/cu ft (89–117 lb/cu ft by grade) |
| Mesh range | 12–325 |
| Typical blast pressure | 30–90 psi |
| Shape | Cubic, angular, sharp |
| Color | Brilliant white |
| Free silica | Less than 1% |
| Packaging | 55 lb bag; 400 lb drum |
Advantages
- High purity (≥ 99.2–99.4% Al2O3), no iron so no rust staining
- Low dusting, less than 1% free silica
- High friability: breaks down to keep sharp edges working
- Acid, alkali and corrosion resistant; refractoriness ≥ 1850°C
Applications
Surface preparation, blast cleaning, deburring, grinding, tumble finishing, buffing prep, non-skid coatings, and lapping and polishing powders in the fine grades. Common in cabinets finishing aluminum, titanium, stainless and medical or firearms components.
Grades and Kresco Codes
| Code | Grade | Mesh | Bulk density (lb/cu ft) |
|---|---|---|---|
| AAO-16W-55 | 16 | 16–18 | 108.6–114.9 |
| AAO-20W-55 | 20 | 18–20 | 111.1–117.4 |
| AAO-24W-55 | 24 | 20–25 | 110.5–116.7 |
| AAO-30W-55 | 30 | 30–35 | 109.3–115.5 |
| AAO-36W-55 | 36 | 35–40 | 108.0–114.2 |
| AAO-46W-55 | 46 | 45–50 | 106.1–112.4 |
| AAO-54W-55 | 54 | 50–60 | 103.6–109.9 |
| AAO-60W-55 | 60 | 60–70 | 101.8–108.0 |
| AAO-70W-55 | 70 | 70–80 | 101.1–107.4 |
| AAO-80W-55 | 80 | 80–100 | 99.3–105.5 |
| AAO-90W-55 | 90 | 100–120 | 98.6–104.9 |
| AAO-100W-55 | 100 | 120–140 | 96.8–103.0 |
| AAO-120W-55 | 120 | 140–170 | 94.9–101.1 |
| AAO-150W-55 | 150 | 200–230 | 93.6–99.9 |
| AAO-180W-55 | 180 | 230–270 | 91.1–97.4 |
| AAO-220W-55 | 220 | 270–325 | 89.9–96.1 |
| AAO-240W-55 | 240 | 270–325 | 89.3–95.5 |
| AAO-280W-55 / 320W / 400W | 280 / 320 / 400 | finer | — |
Chemical and Physical Properties (Technical Data Sheet)
| Grit range | Al2O3 | Na2O | Fe2O3 | SiO2 |
|---|---|---|---|---|
| F4–F80, P12–P80 | ≥ 99.40% | ≤ 0.30% | ≤ 0.03% | ≤ 0.04% |
| F90–F220, P90–P220 | ≥ 99.20% | ≤ 0.35% | ≤ 0.03% | ≤ 0.04% |
α-Al2O3; true specific gravity ≥ 3.9 g/cm³; bulk density 1.5–1.95 g/cm³; crystal size 600–1,400 µm. Grits FEPA-F F12–F1500, FEPA-P P12–P3000, JIS 240–10000.
Related Media
Brown aluminum oxide for general-purpose cutting at lower cost; glass beads for a bright satin finish; plastic media for stripping without touching the substrate.
Ordering
White aluminum oxide ships by the bag, skid or drum from Solvent Recycling Systems with the rest of your blasting consumables. Tell us the grade, quantity and your blast equipment and we’ll quote delivered pricing. Request a media quote or call (847) 833-7010. Not sure which abrasive? Start with our blast media selection chart and the nozzle air consumption chart.
