Alumina 99.5%

Alumina 99.5% is a ceramic material with Al2O3 as the main crystal phase. SENCER PRECISION CERAMICS can produce ceramic products with an alumina content of 96% to 99.8%. The electrical properties of alumina 99.5% ceramics are the best, with good mechanical properties, with a Mohs hardness of 9. A series of anti-oxidation properties are widely used in structural parts and functional device ceramic parts, such as wear-resistant and corrosion-resistant parts used in the mechanical and chemical fields; crucibles, protective tubes, The color of advanced ceramics made by alumina 99.5% are ivory, different molding and sintering methods can be selected according to different uses of customers. The main pressing is usually Dry Pressing, Isostatic Pressing, then with CNC machining, fine grinding, and other processes to make various structures to satisfied with different requirements of industries, such as semiconductor, laser, petrol and medical.

99.5% Alumina Parameters

Composite(wt %)99.5%
ColorIvory
Densityg/cm33.9
HardnessHRA85
Flexural StrengthMpa(psi*103 )386
Gas Permeability0
Water Absorption%0
Thermal Shock Resistance°C198
Thermal Expansion×10-6/℃8.2
Dielectric Constant,20°C1MHz9.6
Dielectric loss, tanδ1MHz1×1014
Volume Resistivity,20℃Ω·cm≥1014
Dielectric Strength,DCΩ·cm20
Compressive StrengthKV/mm2700
Fracture ToughnessMPa( psi * 103)350
Poisson’s RatioMPa0.22
Thermal conductivityW/mK27
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