Alumina Ceramic Thermocouple-protection tube
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Hanyu Golden Valley, High-tech Development Zone, Jinan City, Shandong Province
联系人信息
产品详情
Alumina Ceramic Thermocouple-protection tube: 1. Place of Origin: China 2. Minimum Order Quantity:10pcs 3. Supply Ability: 10,000.00pcs/month
Standard Dimension
1. OD: 3mm-25mm
2. Thickness: 0.5mm-4mm
3. Max length:2500
| Item | Unit | AL997 | AL99 | AL95 |
| Al2O3(%) | --- | 99.7% | 99% | 95% |
| Color | --- | Ivory | Ivory | Ivory |
| Gas-tightness | --- | null | null | null |
| Density |
g/cm3 |
3.94 | 3.8 | 3.75 |
| Straightness | --- | 2‰ | 2‰ | 2‰ |
| Hardness | Moh's hardness | 9 | 9 | 8.8 |
| Water absorption rate | --- |
≤0.2 |
≤0.2 |
≤0.2 |
| Bending strength（20℃） | Mpa | 375 | 340 | 304 |
| Compressive strength（20℃） | Mpa | 2300 | 2210 | 1910 |
| Thermal expansion coefficient（25℃-800℃） | 106/℃ | 7.6 | 7.6 | 7.6 |
| Dielectric strength（thickness 5mm） | AC-kv/mm | 10 | 10 | 10 |
| Dielectric loss 25℃@1MHz | --- |
<0.0001 |
<0.0006 |
<0.0004
|
|
Volume resistivity （20℃） （300℃） |
Ω·cm3 |
>1014 >1010 |
>1014 >1010 |
>1014 >1010 |
| Long-term use temperature | ℃ | 1700 | 1600 | 1200 |
| Thermal conductivity（25℃） | W/moK | 35 | 34 | 20 |
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