High Purity 99% Alumina Ceramic Rods High Inuslation Alumina Ceramic Parts
High purity 99% alumina ceramic tube high inuslation alumina oxide ceramic part
Advantage of 99% Al2O3 Alumina Oxide Ceramic Tube
1. High purity, 99.7% alumina purity make sure high working temperature.
2. Tight tolerance, we can grind OD to make tight tolerance for easy insulation.
3. Fast delivery, we have large quantity tubes in stock.
4. Inspection: each single tube will be checked before shipping.
Machining Ability of 99% Al2O3 Alumina Oxide Ceramic Tube
Outer diameter tolerance: +/-0.01mm,
Inner diameter tolerance: +/-0.02mm,
Surface Roughness: Ra0.1-0.2um
Parallelism: 0.05mm.
Advantages of 99% Al2O3 Alumina Oxide Ceramic Tube
1. Great mechanical strength.
2. Good heat resistant.
3. Good quality and best price.
4. Long life time.
Warranty of 99% Al2O3 Alumina Oxide Ceramic Tube
1. If any broken during shipment, we will send replacement for free or send back your payment. (In case we arrange the shipping).
2. If tolerance is not same with what we discussed, we will send replacements.
| 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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