Application: | Aerospace, Electronics, Medical |
---|---|
Material Composition: | Alumina, Al2O3 |
Speciality: | High Insulation, High Strength, Temperature Resistant |
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Backed by over two decades of experience in metalized ceramics production, our factory offers swift solutions for R&D projects. The metalized
bodies are partially metallized, enabling the creation of highly compact ceramic inductor coil cores. This capability significantly supports the
miniaturization of electrical systems, wire-winding techniques, electronic devices, and components used in electrical coils.
Properties | Unit | Test Method | Material | |||
IN94 | IN96 | IN99 | ||||
Mechanical | Color | - | - | White | White | Ivory |
Alumina Content | % | - | 94 | 96 | 99 | |
Bulk Density | 3 g/cm |
ASTM C-20-83 | 3.7 | 3.8 | 3.9 | |
Surface Roughness | Um | Profilometer | - | Max 0.6 | - | |
Water Absorption | % | ASTM C373-72 | 0 | 0 | 0 | |
Average Crystalline Size | Um | ASTM E112-88 | 4 | 3 | 4 | |
Flexural Strength (20ºC) |
MPa | ASTM F417-78 | 350 | 370 | 370 | |
Elastic Modulus | Gpa | ASTM C773-82 | 290 | 310 | 340 | |
Poisson's Ratio | - | ASTM C773-82 | 0.22 | 0.22 | 0.22 | |
Compressive Strength | Mpa | ASTM C773-82 | 2100 | - | 2500 | |
Hardness | - | Knoop 1KG | 12 | - | 14 | |
Fracture Toughness | Mpa.m1/2 | NOCHED BEAM | 3.4 | - | 4.5 | |
Thermal | Thermal Conductivity (20ºC) | W/m.K | ASTM C408-82 | 21 | 24 | 28 |
Coefficient of Thermal Expansion(20~1000ºC) |
x10-6/ºC | ASTM C372-81 | 8 | 7.8 | 8.1 | |
Specifc Heat | Cal/gºC | ASTM C351-82 | 0.2 | 0.2 | 0.2 | |
Thermal Shock Resistance | ºC | Customer | 200 | 200 | 200 | |
Max. Use Temperature | ºC | - | 1600 | 1600 | 1650 | |
Electrical | Dielectric Strength | KV/mm | ASTM D116-76 | ≥12 | ≥15 | ≥17 |
Dielectric Constance (1MHz.25ºC) |
- | ASTM D150-81 | 9.2 | 9.6 | 9.7 | |
Dielectric Loss (tan delta, 1MHz.25ºC) |
- | ASTM D150-81 | 0.0004 | 0.0003 | 0.0002 | |
Volume Resistivity (25ºC) | Ωcm2/cm | ASTM D1829-68 | ≥10 14 | ≥10 14 | ≥10 14 |