| Application: | Aerospace, Electronics, Medical, Refractory |
|---|---|
| Ceramic Tube & Rod: | Ceramic Tube |
| Treatment: | Glazed, Polishing |
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High-Temperature Feedthrough Terminals are robust, built to withstand extreme conditions with high abrasion resistance, mechanical strength, and pressure tolerance over 10,000 PSI. They excel in high-temperature environments, maintain low dielectric loss, and are rigorously tested for leak integrity.
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Alumina Ceramic Properties
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Properties
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Units
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Alumina Ceramic
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Purity
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wt%
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95%
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99%
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99.8%
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Volume Density
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g/cm3
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3.65
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3.8
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≥3.89
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Water Absorption
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%
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0
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0
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0
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Crystal Size(Grain Size)
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μm
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4-5
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4-5
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4-5
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Vickers Hardness, HV1.0
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Gpa
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14
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1600
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≥15
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Flexural Strength
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Mpa
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300
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310
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≥300
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Coefficient of Linear
Expansion |
20-500ºC
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1x10-6 mm/ºC
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6.5-7.5
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6.5-7.5
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6.5~7.5
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20-800ºC
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6.5-8.0
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6.5-8.0
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6.5~8.0
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Thermal Conductivity
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W/m·K( 20ºC)
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20
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25
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≥20.9
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Specific Heat Capacity
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KJ/(kg·K)
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≥0.8
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≥0.8
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≥0.8
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Dielectric Strength
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KV/mm
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≥12
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15*106
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≥12
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Volume Resistivity
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Ω·cm 20ºC
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≥1014
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≥1014
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≥1014
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Ω·cm 300ºC
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≥1011
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≥1011
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≥1011
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Ω·cm 500ºC
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≥109
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≥109
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≥109
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Dielectric Constant
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1MHz
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9
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9-10
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9-10
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Tangent of Dielectric Loss
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1MHz
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≤4x10-4
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≤2x10-4
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≤3x10-4
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Surface Roughness
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μm
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0.4 After Machine
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0.1-0.4 After Machine
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0.1-0.4 After Machine
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Max Working Temperature
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ºC
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1600
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1600
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1650
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