Duralox 92W

92% Purity High Alumina Ceramic

Duralox is a registred brand name of Jyoti's specially developed Proprietary composite. Duralox 92W spherical micro beads are produced from a proprietary formulation : A high alumina ceramic composite containing 92% alpha alumina crystals having a low percentage of silica in its body composition. Duralox 92W beads are tough & sapphire hard, measuring 9 on Moh’s scale, dense in structure, abrasive in nature and resistant to abrasion wear, they can withstand high temperature and are chemically inert, non-porous, gas tight, non-toxic, non-magnetic, non-radioactive, free of voids

Duralox 92W micro beads have proven to be ideal for shot peening, de-burring and polishing of sheet metal blanks, cast moulded ferrous/non-ferrous components, precious metal ornaments etc.

Duralox 92W beads are found to be excellent as fillers to form wear resistant coating materials in epoxy resin based adhesive compounds. They form a tough, durable, abrasion resistant coating on complex surfaces such as scrapper blades, piping, chutes, hoppers, material passing passage etc. when placed with an epoxy matrix. These coating have a huge potential in ship building, chemical, food and beverage industries as they form tough, chemically inert, non-slippery, wear resistant flooring. In addition, they also provide outstanding service as light weight and abrasion resistant lining.

Due to their abrasive nature, Duralox 92W micro beads are generally not recommended for any bead milling dispersion applications.

PHYSICAL PROPERTIES
Colour White
Surface Finish Abrasive
Density 3.70 ± 0.05 g/cm3
Bulk Density 2.20 ± 0.05 kg/ltr
Porosity Nil
Water absorption Nil
Hardness on Moh’s scale 9+
Hardness on Vicker’s scale (Hv5) 1300
Compressive Strength (20℃) 2,000 Mpa
Crushing strength (Ø 2.0mm bead) 90-100 kgf
Bead Sphericity 90% ≥ 0.95
Maximum use of Temperature (No Load Condition) > 1400 ℃ (2550 ℉)
Co-efficient of Thermal Expansion (25℃ to 1000℃) 7.6 x 10−6/ ℃
CHEMICAL PROPERTIES
Al2O3 92.3%
SiO2 2.55%
MgO 2.45%
CaO 2.10%
Others 0.6%

Duralox 92W Beads Are Available In
Following Fraction Sizes

Broad Fraction Size
Ø 0.4 - 0.7 mm Ø 0.7 - 1.2 mm
Ø 1.2 - 1.7 mm Ø 1.7 - 2.4 mm
Ø 2.4 - 2.8 mm Ø 2.8 - 3.3 mm

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

Chemical Resistance Data Of Duralox 92W Beads At 25oC Test Time 24 Hrs.

Chemical Medium Concentration % Weight Loss per hour
Acetic Acid (CH3COOH) 50% 0.00
Chromic Acid (H2CrO4) 25% 0.00
Formic Acid (CH2O2) 25% 0.00
Hydrochloric Acid (HCI) 18% 0.00
Hydrofluoric Acid (HF) 24% 0.07
Nitric Acid (HNO3) 35% 0.00
Perchloric Acid ( HClO4) 25% 0.00
Phosphoric Acid (H3PO4) 25% 0.00
Sulphuric Acid (H2SO4)50% 50% 0.00
Saturated Sodium Hydroxide Acid (NaOH) 50% 0.00

* With the exception of Hydrofluoric acid Duralox 92W beads maintain their integrity.

Duralox 92W Beads
Bulk Density

Dia
(mm)
kg/ltr
Ø 0.40 - 0.70 mm 2.18 ± 0.05 kg/ltr
Ø 0.70 - 1.20 mm 2.18 ± 0.05 kg/ltr
Ø 1.20 - 1.70 mm 2.18 ± 0.05 kg/ltr
Ø 1.70 - 2.40 mm 2.20 ± 0.05 kg/ltr
Ø 2.40 - 2.80 mm 2.20 ± 0.05 kg/ltr
Ø 2.80 - 3.30 mm 2.20 ± 0.05 kg/ltr
Duralox 997

99.7% Purity High Alumina Ceramic

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 your industrial needs are its salient attributes such as :

  • Its sapphire equivalent hardness (measuring at a magnitude of 9+ on the Moh’s scale or 1600 on Vicker’s scale)
  • Chemical inertness
  • Non-radioactive

Duralox 997 micro beads not only have a dense homogenous internal micro structure but also have a smooth surface finish and are widely used for grinding of high purity alumina oxide material.

Duralox 997 beads can withstand high temperature making them ideal for sintering of Zirconia ceramic dental restoratives on a bed of beads in a sagger. In addition, these beads adapt smoothly to the shape of Zirconia restoratives and allow the units to shrink without any deformation.

PHYSICAL PROPERTIES
Colour Off White
Surface Finish Glossy, Satin Smooth
Density 3.95 ± 0.05 g/cm3
Bulk Density 2.35 ± 0.05 kg/ltr
Porosity Nil
Water absorption Nil
Hardness on Moh’s scale 9+
Hardness on Vicker’s scale (Hv5 ) 1600
Crushing strength (Ø 2mm bead) 100-110 kgf
Bead Sphericity 90% ≥ 0.95
Maximum use of Temperature (No Load Condition) > 1750 ℃ (3450 ℉)
Co-efficient of Thermal Expansion (25℃ to 1000℃) 8.4 x 10 −6/ ℃
CHEMICAL PROPERTIES
Al2O3 99.7%
MgO 0.15%
Others 0.15%

Duralox 997 Beads Are Available In Following Fraction Sizes

Broad Fraction Size
Ø 0.4 - 0.7 mm Ø 0.7 - 1.2 mm
Ø 1.2 - 1.7 mm Ø 1.7 - 2.4 mm
Ø 2.4 - 2.8 mm Ø 2.8 - 3.3 mm

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

Chemical Resisatnce Data Of Duralox 997 Beads At 25oC test Time 24 Hrs.

Chemical Medium Concentration % Weight Loss per hour
Acetic Acid (CH3COOH) 50% 0.00
Chromic Acid (H2CrO4) 25% 0.00
Formic Acid (CH2O2) 25% 0.00
Hydrochloric Acid (HCI) 18% 0.00
Hydrofluoric Acid (HF) 24% 0.03
Nitric Acid (HNO3) 35% 0.00
Perchloric Acid ( HClO4) 25% 0.00
Phosphoric Acid (H3PO4) 25% 0.00
Sulphuric Acid (H2SO4) 50% 0.00
Saturated Sodium Hydroxide Acid (NaOH) 50% 0.00

* With the exception of Hydrofluoric acid Duralox 92W beads maintain their integrity.

Duralox 997 Beads
Bulk Density

Dia
(mm)
kg/ltr
Ø 0.40 - 0.70 mm 2.30 ± 0.05 kg/ltr
Ø 0.70 - 1.20 mm 2.30 ± 0.05 kg/ltr
Ø 1.20 - 1.70 mm 2.30 ± 0.05 kg/ltr
Ø 1.70 - 2.40 mm 2.35 ± 0.05 kg/ltr
Ø 2.40 - 2.80 mm 2.35 ± 0.05 kg/ltr
Ø 2.80 - 3.30 mm 2.35 ± 0.05 kg/ltr

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