| Application: | Aerospace, Electronics, Medical, High Temperature/ High Vacuum Welding |
|---|---|
| Treatment: | Glazed, Polishing |
| Color: | White+Metal |
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Single & Dual-Lead Seals offer vacuum-tight insulation for heating elements and power cables, safeguarding them from potential damage by oils, grease, moisture, and ensuring long-lasting performance.
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Alumina Ceramic Property
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|
Property
|
Unit
|
92% Alumina Ceramic
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95% Alumina Ceramic
|
99% Alumina Ceramic
|
|
|
Density
|
g/cm3
|
≥3.63
|
≥3.68
|
≥3.83
|
|
|
Water absorption
|
%
|
O
|
O
|
O
|
|
|
Sintering temperature
|
°C
|
1500-1700
|
1600-1800
|
1700-1800
|
|
|
Hardness
|
HV
|
≥1400
|
≥1500
|
≥1650
|
|
|
Flexural strength
|
Kgf/cm2
|
3000
|
3000
|
3000
|
|
|
Compressive strength
|
Kgf/cm2
|
24000
|
25000
|
26000
|
|
|
Fracture toughness
|
Map.m3/2
|
3~4
|
3~4
|
4~5
|
|
|
Maximum temperature
|
°C
|
1600
|
1700
|
1800
|
|
|
Coefficient of thermal expansion
|
/°C
|
8*10-6
|
8*10-6
|
8*10-6
|
|
|
Heat shock
|
T(°C)
|
220
|
220
|
220
|
|
|
Thermal conductivity
|
W/m.k(25-300°C)
|
25 14
|
25 14
|
25 14
|
|
|
|
20°C
|
|
>1012
|
>1012
|
>1012
|
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