Wuhan Global Metal Engineering Co., Ltd
Wuhan Global Metal Engineering Co., Ltd The pioneer manufacturer of heaters & sensors
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Refractory 99.5% AL2O3 Alumina Ceramic Tube for Thermocouple Protection
Features
1.Good Electrical Insulation,
2.Max. working temperature: 1800 C
3.Design and make according to the customer's need
4.Chemically inert, anti-acid, anti-alkaline,Superior reliability and durability
Properties:
a) Wear resistant
b) Corrosion resistant
c) Heat resistant .
d) Stable dimensions
e) Lightweight ,
f) Long performance life
Parameter
| Tech-data | Test conditions | Unit | 95% AL2O3 | 99.5% AL2O3 |
| Density | g/cm3 | >3.60 | 3.7 | |
| Bending Strength | N/m3 | 2.24*108 | >2.74*108 | |
| Linear Expansibility | 20~1000C | a*10-6/°C | - | - |
| 20~5000C | a*10-6/°C | 6.2~7.5 | 6.2~7.5 | |
| 20~8000C | a*10-6/°C | 6.5~8.0 | 6.5~8.0 | |
| Specific Inductive Capacity | 1MH2 | 9~10 | 9~10.5 | |
| 10GMH2 | 9~10 | - | ||
| Dielectric Loss | 1MH2 | a*10-6/°C | ≤4 | ≤1.5 |
| Tangent | 10GMH2 | a*10-6/°C | ≤10 | - |
| Volume Resistance | 1000C | Ω.cm | >1013 | >1014 |
| 3000C | Ω.cm | >1016 | >1012 | |
| 5000C | Ω.cm | 108 | - | |
| Breakdown Strength | KV/mm | 15 | - | |
| Thermal Conductivity | 200C | W/m.K | 25.2 | 29.2 |