AD-94 is a high-purity alumina ceramic with a nominal composition of 94% Al2O3. It exhibits a density of 3.70 g/cm¬= and a flexural strength of 308 MPa at 20¬8C. The material has an elastic modulus of 303 GPa and a compressive strength of 2103 MPa, making it suitable for applications requiring high mechanical strength. The hardness is measured at 11.5 GPa, indicating good wear resistance. Thermal properties include a thermal conductivity of 22.4 W/m¬?K and a coefficient of thermal expansion of 8.2 x 10^-6/¬8C, which are important for thermal management in various applications. The dielectric strength is rated at 8.3 kV/mm, and the volume resistivity exceeds 10^14 ohm-cm at room temperature, making it an effective electrical insulator. AD-94 is manufactured using advanced processes such as injection molding and is available for both prototype development and high-volume production. This product is suitable for applications in electronics, wear-resistant components, and environments requiring high thermal and electrical insulation.
Aluminas (aluminum oxide, Al2O3) are the most commonly used technical ceramics due to their generally useful properties and good price/performance ratio. Alumina ceramics are commonly subdivided according to their alumina content ranging from 80% to more than 99%. Higher purity alumina demonstrates enhanced wear and corrosion resistance — creating a continuous scale of various alumina grades, compositions, and performance.
Aluminas are used in both general use and specialized applications. A grade is selected to fit the application environment. Alumina compositions and microstructures can be formulated to meet the specific performance requirements of more demanding applications.
Ceramic Expertise
As a leading technical ceramics manufacturer, CoorsTek offers an extensive line of aluminas. Our ceramics experts tailor the choice of alumina grade to meet the specific application requirements.
CoorsTek has developed over 100 unique alumina compositions, optimized for specific application requirements. Let our experts help you determine the best-fit material for your application.
CoorsTek originally developed high-purity alumina electrostatic precipitator insulator (ESP) products in the 1960s to replace products manufactured with electrical-grade porcelain. In the early 1970s, CoorsTek commercialized high-grade alumina ceramic insulator products as the industry standard for high performance and reliable operation of electrostatic precipitator units.
Engineered to perform in extreme, hostile electrostatic precipitator environments, CoorsTek DuraPure™ high-purity alumina ceramic works exceptionally well for discharge electrode system support insulators, rapping system insulators, feed-through bushing insulators, and anti-sway bars and insulators.
Alumina Reliability
Increased Value
By using the advanced material properties of alumina, each electrostatic precipitator component will be able to:
| CoorsTek | CoorsTek | |
|---|---|---|
| Product Category | Industrial Ceramic Materials | Specialty Ceramics |
| Product Number | AD-94 | AD-94 |
| Product Name | Alumina Engineered Ceramics | Anti-Sway Bars |
| Material Type | Alumina | |
| Composition | 94% Al2O3 | |
| Applications | Injection Molding, Roll Compacting, Extruding, Co-firing, Isostatic Pressing, Dry Pressing, Hot Pressing, Tape Casting, Slip Casting | |
| Performance Features | Machinable ceramic | |
| Max Use Temperature | 1800 C (3272 F) |
