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Alumina Ceramic Insulator is made of a ceramic material with Al2O3 as the main crystal phase. With the performance of abrasion resistance, corrosion, and heat resistance, excellent vacuum sealing and heat dissipation enable alumina ceramic insulators are widely used in the auto and vessel, and aircraft industry.
| Material | Alumina 99.5%, Alumina 99.8%, Alumina 99% |
|---|---|
| Tolerances | Up to +/-0.001mm |
| Forming | Dry-pressing, Isostatic-presssing |
| Processing | CNC machining with fine grinding |
| Customization | Send us your drawing to get our best offers |
Alumina Ceramic Insulator is made of a ceramic material with Al2O3 as the main crystal phase. SENCER PRECISION CERAMICS can produce ceramic Insulators with an alumina content of 99% to 99.8%. The alumina has a compact structure, low activity, and high-temperature stability. The electrical properties are the best, with good mechanical properties, with a Mohs hardness of 9. With the performance of abrasion resistance, corrosion, and heat resistance, excellent vacuum sealing and heat dissipation enable alumina ceramic insulators are widely used in the auto and vessel, and aircraft industry.
| Composite | (wt %) | 99% | 99.5% | 99.8% |
| Color | White or Ivory | White or Ivory | White or Ivory | |
| Density | g/cm3 | 3.82 | 3.9 | 3.92 |
| Hardness | HRA | 83 | 85 | 85 |
| Flexural Strength | Mpa(psi*103 ) | 375 | 386 | 381 |
| Gas Permeability | 0 | 0 | 0 | |
| Water Absorption | % | 0 | 0 | 0 |
| Thermal Shock Resistance | °C | 195 | 198 | 198 |
| Thermal Expansion | ×10-6/℃ | 8.2 | 8.2 | 8.2 |
| Dielectric Constant,20°C | 1MHz | 9.6 | 9.6 | 9.7 |
| Dielectric loss, tanδ | 1MHz | 2×1014 | 1×1014 | 1×1014 |
| Volume Resistivity,20℃ | Ω·cm | ≥1014 | ≥1014 | ≥1014 |
| Dielectric Strength,DC | Ω·cm | 20 | 20 | 20 |
| Compressive Strength | KV/mm | 2510 | 2700 | 2600 |
| Fracture Toughness | MPa( psi * 103) | 350 | 350 | 350 |
| Poisson’s Ratio | MPa | 0.22 | 0.22 | 0.22 |
| Thermal conductivity | W/mK | 25.8 | 27 | 27 |
Alumina Ceramic Insulator
Material:
Available Color:
White or Ivory
Feature:
High-Heat Resistance, Excellent Insulation Performance. High Corrosion-Resistance, High Wear-Resistance, High Pressure Pressed
Size:
Size Customized, according to customer’s drawing, OEM.
Application:
Industrial ceramic, Technical ceramic.Advanced ceramic.Fine ceramic.
Advantage:
Package:
Carton+Palletize,Carton,bubble paper inside,Wooden Box.Pls let us know if you have any special requirements.
Producing Methods:
Dry pressing with Fine Lapping. Isostatic pressing.Metallization.
Tolerance:
Up to ±0.002mm, as customer’s drawing or OEM.
Surface:
Ultrasonic cleaning and dust-free packaging or according to customer’s requirements.
The time limit is very fast (usually will arrive in 5-7 days )and you do not need to pick up the goods by yourself.
Freight charge: higher.
The time limit is very fast (usually will arrive in 7-12 days) and you need to pick up the goods from the airport by yourself.
Freight charge: cheaper than air express.
The time limit is slow and you need to pick up the goods from the destination port by yourself.
Freight charge: cheapest.
We will contact you within 1 working day, please pay attention to the email with the suffix “@senceramics.com”.
