SAPPHIRE CRYSTAL

Features of Sapphire

  • High Strength, High Rigidity, High Anti- Abrasion, High Anti-Heat, High Anti-Corrosion Characteristics
  • Stable Dielectric Constant, Very Low Dielectric Loss, Good Electrical Insulation
  • Excellent Light Transmission
  • Good Thermal Conductivity and High Heat Resistance

 

Physical and Mechanical Properties of Sapphire Crystals

 Sapphire material
Chemical Formula

Al2O3

Hardness Mohs:

9
Compressive strength

GPa 2.0

Density

3.98 g/cm3
Melting point

2040 °C

Boiling point

2980 °C
Optical transmission range, µm

0.17 – 5.5

Refractive index at 0.532 µm

n0=1.7717, ne=1.76355

 

MoHs Scale Hardness 9.0

 IMG_8457Hardness Bar  MoHS Hardness Testing- Sapphire Crystals_Page_1