95% Alumina Ceramic Material Tube Alumina Ceramic Tube High Insulation Heat Resistant
High Insulation Heat Resistant 95% Alumina Ceramic tube Ceramic tube
95% 99% alumina ceramic rod
About this item
Common application are: kiln/furnace components, spacers, bushings, insulators, nozzles, sleeves, seal rings, support pins & wear resistant components.
Readily available material with reasonable cost possessing excellent properties handling thermal and mechanical shock.
1). Resitant high temperature
2). High density
3). High bending strength and breaking tenacity
4). Low thermal conductivity( 20% that of alumina)
5). Chemical inertness
6). Resistance to molten metals
7). Wear resistance
8). High fracture toughness
9). High hardness
| Properties | Unit | Steatite ceramic | 95% Al2O3 | 99% Al2O3 | Zirconia Ceramic |
| Density | g/cm³ | 2.8 | 3.6 | 3.8 | 5.6 |
| Flexural strength | Mpa | 145 | 300 | 300 | 354 |
| Max Working Temperature | ℃ | 1100 | 1400 | 1600 | 1400 |
| Sintering temperature | ℃ | 1350 | 1700 | 1750 | 1550 |
| Heat resistance | T(℃) | 200 | 220 | 200 | 350 |
| Hardness | Gpa | 5.7 | 7 | 10.7 | 12.3 |
| Elastic modulus | Gpa | 120 | 275 | 320 | 205 |
| Poissons ratio | - | 0.21 | 0.22 | 0.22 | 0.30 |
| Linear expansion coefficient | x 10-6/℃ | 7.9 | 7.1 | 7.8 | 9 |
| Insulation breakdown Intensity | KT/mm | 10 | 16 | 18 | 15 |
| Thermal conductivity | w/(m.k) | 2.5 | 20 | 25 | 2.5 |
| Specific Heat | *10-3J/(kg*K) | 0.75 | 0.78 | 0.78 | 0.4 |
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