Do you have any questions? Email Us [email protected]

AC0971 Alumina Plate, Aluminum Oxide Plate, Al2O3

Catalog No. AC0971
Material Al2O3
Purity 95%, 96%, 99%, 99.5%, 99.7%, 99.8%
Density 3.8~3.9 g/cm3


Alumina Plate Description

Alumina PlateThe alumina plate is made of aluminum oxide ceramics. Alumina is a ceramic material with high thermal conductivity, compressive strength, and thermal shock resistance. It also has a low thermal expansion, making it a suitable material for furnace use in the crucible, tube, and thermocouple sheath form. Aluminum oxide ceramic plates can withstand high temperature and maintain high strength and hardness. Alumina ceramic plates also have superb performances in electrical insulation, high chemical resistance, good were resistance and heat resisitance, and low thermal expansion. We have various sizes of semi-finished shapes in stock and are able to conduct custom manufacturing for all kinds of alumina components.

Alumina Plate 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 just demonstrates the typical properties of common alumina materials we use to produce our alumina ceramic parts. Please notice that the property for customized alumina parts could vary due to different process. Advanced Ceramic Materials (ACM) could provide aluminum oxide products produced under your specified instruction, or do the best to meet customers’ requirements.

Alumina Plate Applications

Aluminum oxide ceramic plates have a wide variety of applications:

• Alumina plates are hard enough to become armor for personnel or vehicles.
• The corrosion resistivity of alumina plates makes them a great material for the chemical industry.
• Used as a material for industrial furnaces due to its ability to maintain its hardness at high temperatures.
• Used for making parts for CVD thin films, ion implants, photolithography, and semiconductor parts.
• In traditional industries, alumina ceramics are ideal for products such as injector tubes, gas nozzles, and insulators.


Our Alumina plates are carefully handled to prevent damage during storage and transportation and to preserve the quality of our products in their original condition.


  I would like to join the mailing list to receive updates from Advanced Ceramic Materials .

*: e-mail address with your company's domain name is preferred. Otherwise, we may not be able to process your inquiry.

Submit your review

Create your own review
Alumina Plate
Average rating:  
 1 reviews
by John Coates on Alumina Plate
Happy with their performance.

So far so good. No complaints. Just like any other plate, would always love it if they lasted longer, but these are the longest lasting I've found.