alumina Ceramic tube for type K/N/E/T/J Thermocouple Protection
| Item | |
| unit | |
| 95% Alumina Ceramics | |
| 99% Alumina Ceramics | 95% Zircionia Ceramics |
| Major Chemical | |
| Al2O3 | |
| Al2O3 | ZrO2 |
| Content | |
| ≥95 | |
| ≥99 | ≥94.5 |
| Volume Density | |
| g/m³ | |
| ≥3.6 | |
| ≥3.8 | ≥6.02 |
| Maximum Service Temperature | |
| ℃ | |
| 1680℃ | |
| 1800℃ | 2400℃ |
| Dielectric constant (1MHZ) | |
| 9 | |
| 9.9 | 20 |
| Bending Strength | |
| Mpa | |
| 320 | |
| 360 | 1000-1500 |
| Fracture Toughness | |
| Mpa.m-3/2 | |
| 2-4 | |
| 3-5 | 11 |
| Elastic Modulus | |
| Gpa | |
| 280 | |
| 370 | 210 |
| Coeffient of Thermai Expansion | |
| X10-6/℃ | |
| 7.1 | |
| 8 | 10.5 |
| Heat Impact | |
| T℃ | |
| 200 | |
| 200 | 250 |
| Resistance | |
| Ω/cm³ | |
| >10(14~16) | |
| >10(14~16) | |
| Poissiom Ratio | |
| 0.2 | |
| 0.2 | 0.3 |
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