Alumina Plate Description
Alumina plates are made of alumina ceramics. Aluminum oxide is a ceramic material with high thermal conductivity, compressive strength, and resistance to thermal shock. It also has low thermal expansion, making it a furnace material in the form of crucibles, tubes, and thermocouple sheaths. Alumina ceramic plates can withstand high temperatures and maintain high strength and hardness. Alumina ceramic plates also have excellent electrical insulation properties, high chemical and cold heat resistance, and low thermal expansion. We stock semi-finished shapes in various sizes and are capable of custom fabrication for various alumina components.
Key Features and Benefits
- High wear & chemical resistance
- Heat resistant
- High mechanical strength
- Small dielectric loss
- Good thermal conductivity
- High light reflection
- 0% water absorption
Applications
- LED lighting
- High-reliability applications
- High-frequency circuits
- Power electronics
- Photovoltaic Technology
- Applications for hazardous environments
Alumina Plate Specifications
| Alumina Ceramic Substrate Material Property | ||||
|---|---|---|---|---|
| Item | Unit | 96% Al2O3 | 99.6% Al2O3 | |
| Mechanical Properties | ||||
| Color | / | / | White | Ivory |
| Density | Drainage Method | g/cm3 | ≥3.70 | ≥3.95 |
| Light Reflectivity | 400nm/1mm | % | 94 | 83 |
| Flexural Strength | Three Point Bending | MPa | >350 | >500 |
| Fracture Toughness | Indentation Method | MPa·m1/2 | 3 | 3 |
| Vickers Hardness | Load 4.9N | GPa | 14 | 16 |
| Young's Modulus | Stretching Method | GPa | 340 | 300 |
| Water Absorption | % | 0 | 0 | |
| Camber | / | Length ‰ | T≤0.3: ≤5‰, Others: ≤3‰ | ≤3‰ |
| Thermal Properties | ||||
| Max. Service Temperature (non-loading) | / | ºC | 1200 | 1400 |
| CTE (coefficient of thermal expansion) | 200-800ºC | 1×10-6/ºC | 7.8 | 7.9 |
| Thermal Conductivity | 25ºC | W/m·K | >24 | >29 |
| Thermal Shock Resistance | 800ºC | ≥10 Times | No Crack | No Crack |
| Specific Heat | 25ºC | J/kg·k | 750 | 780 |
| Electrical Properties | ||||
| Dielectric Constant | 25ºC, 1MHz | / | 9.4 | 9.8 |
| Dielectric Loss Angle | 25ºC, 1MHz | ×10^-4 | ≤3 | ≤2 |
| Volume Resistivity | 25ºC | Ω·cm | ≥10^14 | ≥10^14 |
| Dielectric Strength | DC | KV/mm | ≥15 | ≥15 |
Frequently Asked Questions About Our Blank Alumina Substrates (FAQs)
We are a professional ceramic substrate factory with a production capacity of 100 million pieces. All our products are ISO9001 and IATF certified
Please send me your drawings together with technical requirements and required quantity. If you don’t have drawings, please express the samples to us
Generally, it will take 5-10 days if it is in stock. If customized, it will take approximately 30 days to ship. Packaging usually includes bubble wrap, cartons, pallets, wooden boxes, etc
Yes, most alumina ceramic substrates are rectangular, square or round. Our sintered alumina ceramic substrates are available in rectangular shapes up to 190mm x 138mm. We provide customized products for special requirements
Our standard thicknesses: 0.2mm, 0.38mm, 0.50mm, 0.635mm, 0.76mm, 0.89mm, 1.0mm, 1.5mm and 2.0mm. Minimum thickness is 0.1mm. Welcome to inquire about customized services
Ordering Information
Order alumina plates in the desired size and quantity. For bulk orders or custom requirements, please contact us for more details.
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