Audited Supplier
CeaGoo offers an aluminum oxide material of the highest quality, with a purity of 99.5% and 99.7%.
99% alumina exhibits more excellent properties than 95% alumina as below:
High breaking strength
Very high heat resistance
Good thermal conductivity
Very high degree of hardness and wear resistance
Electrical insulation, even at high temperatures
Corrosion resistance in diluted acids and lyes
Low-friction surface with reproducible surface properties
| Properties | Units | 99% Alumina |
| Physical | ||
| Density, r | g/cm3 | 3.7-3.97 |
| Crystal Structure | hexagonal | |
| Water Absorption | % @R.T. | 0 |
| Hardness | knoop (kg/mm2) | 1440 |
| Hardness | R45N | 83 |
| Mechanical | ||
| Compressive Strength | MPa @ R.T. | 2600 |
| Tensile Strength | MPa @ R.T. | 262 |
| Modulus of Elasticity | Gpa | 394 |
| Flexural Strength (MOR) | MPa @ R.T. | 379 |
| Poisson's Ratio, u | 0.27 | |
| Fracture Toughness, KIc | MPa x m1/2 | 4.5 |
| Thermal | ||
| Max. Use Temperature | oC | 1700 |
| Thermal Shock Resistance | DT (oC) | 200 |
| Thermal Conductivity | W/m-K @ R.T. | 35 |
| Thermal Expansion Coefficient | mm/m-ºC | 8.4 |
| Specific Heat | cal/g-oC @ R.T. | 0.21 |
| Electrical | ||
| Dielectric Constant | 1MHz @ R.T. | 9.6 |
| Dielectric Strength | kV/mm | 8.7 |
| Electrical Resistivity | Wcm @ R.T. | >10^14 |
Q: Are you a factory or trading company?
A: We are a manufacturer. Warmly welcome to visit our factory.
Q: What kinds of products can you make?
A: We are offering products made by 95%/99.5%/99.7% alumina, zirconia and steatite.
Q: Is it available to provide customized products?
A: 90% of our products are custom-made, so your special demands are always welcome.
Q: How soon can I get the price?
A: Nornally, we quote within 24 hours after your full inquiry arrives.
The full inquiry should include a drawing with technology requirements and your purchase quantity.
If you can inform us what is the part used in, that will help to make our quotation more accurate.
Q: How long is your delivery time?
A: Generally it will 21-35 days, but it varies on the different designs and quantities.
Q: Can you provide the free samples?
A: Yes, we would like to offer samples or similar ones for free, but the courier fee be collected.
Q: What is your terms of payment?
A: For the first order, we ask 100% T/T in advance and the balance before shippment.
