DURALOX® 997 ALUMINA CERAMIC MICRO BEADS
DURALOX® 997 ALUMINA CERAMIC MICRO BEADS
Duralox® 997 Spherical Micro Beads are produced from proprietary formulated high purity alumina composite, which contains 99.7% alpha alumina crystals having negligible percentage of silica in its body composition.
What makes Duralox® 997 Micro Beads state of the art material for dental labs needs are its salient attributes such as :
- Non-radioactive
- Chemical inertness
- Its sapphire equivalent hardness (measuring at a magnitude of 9+ on the Moh’s scale or 1600 on Vicker’s scale)
Duralox® 997 micro beads not only have a dense internal micro structure but also have a smooth surface finish and can withstand high temperature making them ideal for sintering of Zirconia restoratives on a bed of beads in the saggar. In addition, these beads adapt smoothly to the shape of Zirconia restoratives and allow the units to shrink without any deformation.
Physical Properties |
|
|---|---|
| Composition | 99.7% Al2O3 |
| Colour | Off White |
| Average crystal size | 2-7 Micron |
| Density | 3.95±0.05 g/cm3 |
| Bulk Density | 2.35±0.05 kgs/ltr |
| Porosity | Nil |
| Water absorption | Nil |
| Hardness on Moh`s scale | 9+ |
| Hardness on Vicker' s scale | 1600 Hv10 |
| Compressivestrength | 3300 Mpa |
| Crushing strength (∅ 2mm bead) | 100-110 kgf |
| Flexural strength (250C) | 3700 kg/cm2 |
| Modulus of elasticity | 3.5 x 106 kg/cm2 |
| Fusion temperature | >20000C (36320F) |
| Maximum use temperature (No load condition) | >17500C (31820F) |
| Co-efficient of thermal expansion | 8.4 x 10-6 / 0C |
| Thermal conductivity (200C | 28 W/m/0K |
Chemical Properties |
|
| Al2O3 | 99.7% |
| MgO | 0.15% |
| Others | 0.15% |
Standard Fraction range sizes of Beads |
|
| ∅ 0.4 to ∅ 0.7 mm | ∅ 0.7 to ∅ 1.2 mm |
| ∅ 1.2 to ∅ 1.7 mm | ∅ 1.7 to ∅ 2.4 mm |
| ∅ 2.4 to ∅ 2.8 mm | ∅ 2.8 to ∅ 3.3 mm |
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We also offer custom fraction size beads, if found feasible for production. |
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*Disclaimer−All Product names & trademarks are the property of their respective owners. Which are in no way associated or affiliated with Jyoti Ceramic Industries Pvt. Ltd. Or Jyodent®.
