CY2404 Aluminum Oxide Sapphire Crystal Substrate, Al2O3

Catalog No. CY2404
Size Dia.1’’x 0.5mm; Dia.2’ x 1mm; 10 x10 x0.5mm; 5×5×0.5mm
Purity ≥99.95%
Thickness 0.5mm; 1mm
Molecular Formula Al2O3
Crystal Class Hexagonal System

Aluminum Oxide Sapphire Crystal Substrate of the highest quality is supplied in Stanford Advanced Materials. Al2O3 substrate enables the most efficient production at your location. We offer quick turnaround and customized solutions for our customers.

Related products: LSAT Crystal Substrates; Silicon Wafer; Potassium Tantalate Crystal Substrates; Aluminum Single Crystal Substrate

Aluminum Oxide Sapphire Crystal Substrate Description

Aluminum oxide sapphire crystal substrate has good thermal characteristics, excellent electrical and dielectric properties, and is resistant to chemical corrosion. It is resistant to high temperatures, good thermal conductivity, high hardness, infrared transmission, and chemical stability. It is widely used in high temperature resistant infrared window materials, III-V nitrides, and various epitaxial film substrate materials.


Aluminum Oxide Sapphire Crystal Substrate Specifications

Crystal Class

Hexagonal system

Lattice Constants

a=4.785, c=12.991



Melting Point

2040 °C



Elastic Coefficient  

C11= 495; C12=160; C33= 497; C44= 146; C13= 115; C14= 23 GPa

Thermal Conductivity

46.06 @ 0 oC, 25.12 @ 100 oC, 12.56 @ 400 oC ( W/(m.K) ) 

Thermal Expansion

7.5 x 10-6 /℃

Standard Orientation


Standard Size

 5x5mm, 10x10mm, Dia1"(25.4mm), Dia2"(50.8mm)

Or customized.

Standard Thickness

0.5mm, 1.0mm, 2.0mm, 5.0mm

Dielectric Constant

~9.4@ 300K at A-axis ~11.58@ 300K at C-axis


Single side polished or Double side polished


Aluminum Oxide Sapphire  Crystal Substrate Applications

Aluminum Oxide Sapphire Crystal Substrates are used in the following applications:

- Sapphire substrates: IR Detectors; microwave integrated circuits;
- Aerospace: withstand high heat, windows, countermeasures lamps;
- Medical: surgical systems, contact tips for various surgical laser applications, endoscope lenses;
- Watch industry.


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