White, the main crystal phase is Al-Al2O3. The white corundum powder produced by the fixed electric arc furnace has the advantages of high bulk density and low porosity, which can improve the volume stability and thermal shock resistance.
Main Physical Properties
| MOHS HARDNESS | 9.0 |
| BULK DENSITY | 1.75-1.95g/cm3 |
| SPECIFIC GRAVITY | 3.95g/cm3 |
| Volume Density | 3.60 |
white emery powder can be used in polishing/grinding/lapping/fill/coating/Ceramic filter film/oilstone, etc.
| white emery powder | ||||
| Properties Type | W / FEPA / JIS | |||
| Guarantee Value | Typical Value | |||
| Chemical Composition | Al2O3 | ≥99 | 99.2 | |
| SiO2 | ≤0.1 | 0.08 | ||
| Fe2O3 | ≤0.1 | 0.06 | ||
| Na2O | ≤0.4 | 0.32 | ||
| W | W63 W50 W40 W28 W20 W14 W10 W7 W5 W3.5 W2.5 W1.5 W0.5 |
| FEPA | F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 F2000 |
| JIS | 240# 280# 320# 360# 400# 500# 600# 700# 800# 1000# 1200# 1500# 2000# 2500# 3000# 4000# 6000# 8000# |
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