Alumina Crucible Description
Alumina Crucibles are crafted from high-purity aluminum oxide, a ceramic material renowned for its exceptional thermal conductivity, compressive strength, high-temperature resistance, and thermal shock resistance. With low thermal expansion, alumina is ideal for furnace use in crucibles, tubes, and thermocouple sheaths. Additionally, its high hardness and wear resistance make it suitable for applications such as ball valves, piston pumps, and deep drawing tools. Alumina can also be easily combined with metals and other ceramics using brazing techniques and metalizing.
Alumina Crucible Specifications
|
Composition |
AL97 |
AL98 |
|
AL2O3 Content |
97% |
99.80% |
|
Color |
White |
Ivory |
|
Tensile |
30 Kpsi |
32 Kpsi |
|
Flexural |
55 Kpsi |
60 Kpsi |
|
Compressive |
300 Kpsi |
330 Kpsi |
|
Density |
3.7 g/cc |
3.92 g/cc |
|
Hardness |
13.8 HV, Gpa |
18 HV, Gpa |
|
Thermal Conductivity |
25 W/(m K) |
32 W/(m K) |
|
C.O.T.E. |
77 In / In°C (x10^7) |
78 In / In°C (x10^7) |
|
Working Temperature |
1500 °C |
1750 °C |
|
Dielectric Constant |
9.5 |
9.8 |
|
Volume Resistivity |
>10^14 Ohm-cm |
>10^15 Ohm-cm |
|
Dielectric Strength |
16 KV/mm |
20 KV/mm |
*This chart demonstrates the typical properties of common alumina materials used in our alumina parts production. Customized aluminum oxide parts' properties may vary due to different processes. Supreme Ceramic Materials (SCM) can produce Al2O3 products under specified instructions or to meet customer requirements.
Alumina Crucible Applications
Alumina crucibles are used in various applications, including:
· Semiconductor Industry: Parts for CVD, ion implants, photolithography, and other semiconductor parts.
· Traditional Industries: Ideal for injector tubes, gas nozzles, and insulators.
· Industrial Furnaces: Maintains hardness at high temperatures, making it perfect for industrial furnaces.
· Thermocouple Protection: Acts as a protector for high-temperature thermocouples.
· Chemical Industry: High corrosion resistance makes it suitable for chemical processing equipment.
Packaging
At Supreme Ceramic Materials (SCM), our high-purity aluminum oxide crucibles are carefully handled to prevent damage during storage and transportation and to preserve the quality of our product in its original condition.
Frequently Asked Questions (FAQs)
· What is the maximum temperature these crucibles can withstand?
Our alumina crucibles can withstand temperatures up to 1800°C.
· Do you offer custom sizes and shapes?
Yes, we offer custom sizes and shapes to meet specific requirements. Please contact us for more details.
· What is the purity level of the alumina used in these crucibles?
The alumina used in our crucibles has a purity level of 99.5%
