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  5. Complex & Custom Alumina Ceramic Complex & Custom Alumina Ceramic
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Complex & Custom Alumina Ceramic

Alumina ceramic is the most common technical material and relatively traditional ceramic. High-purity alumina has excellent performance in electrical insulation, high chemical resistance, and low thermal expansion. Alumina ceramics are used to make parts for CVD, ion implants, photolithography, and semiconductors. Edgetech processes Alumina Ceramic Complex & Custom parts according to your drawings with a polishing roughness of Ra0.1-0.3um.

Specifications of Alumina Ceramics

Item Unit Al2O3
Physical Property
Color   Ivory
Density g/cm3 3.7-3.9
Purity % 95~99.8
Gas Permeability   0
Water Absorption   0%
Mechanical Properties
Vickers Hardness GPa 12.3-17.2
Flexural Strength MPa 300-380
Compressive Strength (HV0.5) MPa 2000-2350
Elastic modulus GPa 270-380
Fracture Toughness MPam1/2 3.5-4
Thermal Properties
The Max Working Temperature ℃ 1650
Thermal Conductivity at room temperature W/(m·K) 20-32
Coefficient of Thermal Expansion 10-6/℃ 6.5-7.2
Thermal Shock Resistance △T℃ 200
Electrical Properties
Dielectric Strength KV/mm 10-15
Dielectric Constant   9-10
Dielectric Loss Angle(1MHz)   0.0002-0.0003
Volume Resistivity Ω·cm >1014

The above chart just demonstrates the typical properties of common alumina ceramic we use to produce our alumina parts. Please notice that the properties of customized alumina parts vary due to different processing. Edgetech Industries,  Advanced Ceramics Division provides alumina products according to your specified instructions or does its best to meet requirements.

  • Boron Nitride Tube
  • BN Tubes

Advantages of Alumina Ceramic Parts

-High hardness, Rockwell hardness is HRA80-90, second only to diamond, far exceeding the wear resistance of wear-resistant steel and stainless steel
-Excellent wear resistance, measured by professional research institutions, its wear resistance is equivalent to 266 times that of manganese steel and 171.5 times that of high-chromium cast iron. According to our customer maintenance survey over the past decade, under the same working conditions, it can extend the service life of the equipment by at least ten times
-Lightweight, its density is 3.9g/cm³, only half of that of steel, which can directly reduce the load on the equipment

Packing of alumina ceramics

As a ceramic material, Alumina Parts are quite fragile in a lot of cases. Our Alumina Ceramic Complex & Custom parts are carefully handled to minimize damage during storage and transportation. Suitable outer boxes and inner cushioning materials are used, and vacuum packing is also engaged for some of the parts.

Edgetech Industries LLC7938 Liberty Way, Parkland, FL 33067 USAsales@edge-techind.com