Sapphire Crystal
Product description:
    Sapphire single crystal has excellent mechanical property, chemical stability and performance of high temperature resistance. It also has high intensity and high hardness, can work under extreme condition such like 1900℃ high temperature. Therefore, Sapphire is widely applied in military infrared device, satellite space technology, high intensity laser and cover glass material of hand-held intelligent terminal device. Crstyal-Optech professionally produces large size and high quality sapphire single crystal material with kyropoulos method.
  • Technical index

 

Material Properties

Crystal Strusture

hexagon  a=4.758 , i=12.992

Crystallizing Orientation


(11-20)-a plane:2.379(1-102)-r plane:1.740
(10-10)- m plane:1.375(11-23)-n plane:1.147 
(0001)-c plane:2.165(10-11)-s plane:1.961


Single Crystal Purity

>99.99%

Melting Point

2040

 Density

3.98g/cm3

Hardness

9(mohs)

Coefficient of Thermal Expansion

7.510-6/

Heat Capacity

0.10(cal/)

Thermal Conductance

46.06@025.12@100,12.56@400(W/(m.k))

Dielectric Constant

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

Loss Tangent

<210-5at A axis,<510-5 at C axis

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