Ultra AAP

ULTRA-HIGH PURITY ALPHA PHASE ALUMINA (Al₂O₃) POWDER

Our Ultra-High Purity Alpha Phase Alumina Powder (Ultra AAP™) is a finely engineered product with a guaranteed purity of over 99.995% to meet the diverse needs of modern industries.

Our Ultra AAP™ is designed with superior quality and precision in mind. With bespoke particle-sizing and customisable specific surface areas, this product caters to the specific requirements of our clients across various high-tech industries.

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UNITS
ULTRA AAP™
Description
Ultra-High Purity Alpha Phase Alumina
Chemical Formula
Al₂O₃
Crystal Structure
α
Purity
%
4N5 - 99.995%
Uranium (U) & Thorium (Th)
ppb
< 1
Processing

Milled or Unmilled
Particle Size Distribution (PSD) 
d50
1 - 2μm 
3 - 4μm
6 - 8μm 
Loose Bulk Density
g/cm³
0.4 - 0.5
0.4 - 0.5
0.5 - 0.7
Tapped Bulk Density
g/cm³
0.6 - 0.8
Specific Surface Area (BET)
m²/g
4 - 8
Impurity Panel (76 elements - GDMS)

< 40 PPM

SEM IMAGERY

UNMILLED

MILLED

Ultra AAPUltra Aap Milled

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THE VERSATILITY OF OUR

ULTRA AAP™ FOR INDUSTRY APPLICATIONS

Our Ultra AAP™ is the ideal precursor material for thermal interface materials (TIMs) due to our industry leading purity, ability to remove radio-nuclide impurities (Uranium and Thorium) to < 1 ppb and excellent thermal conductivity and electrical insulation.

Our Ultra AAP™ is used extensively in the production of sapphire substrates for LED lighting, micro-LED as well as UV-LEDs for sterilisation and water purification. Additionally, our Ultra AAP™ is used for the production on LED phosphors by converting the emitted blue or ultraviolet light into white light.

HPA is an essential component in lithium-ion batteries, ensuring the stability and longevity of the battery separator and anode coating. Our Ultra AAP™ supports higher battery performance, enhanced energy efficiency, and extended battery life, which are vital for the rapidly expanding EV market.

Our ability to provide bespoke particle sizing for together with industry leading purity and ultra low sodium (Na) and potassium (K) levels make our Ultra AAP™ the ideal material for outperforming CMP (Chemical Mechanical Planarization) slurry abrasives.

Our Ultra AAP™ can be customised for most applications in advanced technical ceramics, to optimise sintering performance, hardness, wear resistance, thermal stability and electrical insulation. Please submit an enquiry to find out more.

Get In Touch

Contact us today to discuss your project needs and how Alpha HPA’s products can provide the solution for your manufacturing requirements.

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