99.7% High Purity Alumina Ceramic MICRO BEADS For uniform smooth sintering of Zirconia Dental restoratives.

Duralox 997 spherical micro beads are produced from proprietary formulated, high purity Alumina ceramic composite, which contains 99.7% Alpha alumina cystals with negligible percentage of Silica in its body composition.

Duralox 997 beads are sapphire hard, tough, abrasive in nature and suitable to withstand high temperature. Duralox 997 beads are 9 on Mohs scale in hardness, chemically inert, non-radioactive, free of voids, have dense homogenous internal microstructure and are smooth in surface finish. Ideal for sintering of Zirconia restoratives on the bed of beads in the sagger, Duralox 997 micro beads smoothly adapt to the shape of the Zirconia restoration and allow the unit to shrink without any deformation.

Bead standard fraction range size: 0.4 to 0.7mm, 0.7 to 1.2mm, 1.2mm to 1.7mm, 1.7mm to 2.4mm, 2.4 mm to 2.8 mm, 2.8 mm to 3.3 mm. Special bead size can be catered on request.

We can also offer custom fraction size beads, if found feasible for production.

Physical Properties

Composition 99.7% Al2O3
Colour Off White
Average crystal size 2-7 Micron
Density 3.95±0.05 gms/cc
Bulk Density 2.35±0.05 kgs/ltr
Porosity Nil
Water absorption Nil
Hardness on Moh`s scale 9+
Hardness on Vicker' s scale (Hv10) 1600
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
Flexural 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 ∅ 1.7to ∅ 2.4 mm
∅ 2.4 to ∅ 2.8 mm ∅ 2.8 to ∅ 3.3 mm

We also offer custom fraction size beads, if found feasible for production.

*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.

For distribution and dealership, Please contact us at info@jyodent.com

Bulk enquiries are welcome in private label for Zirconia Discs & Blanks