sapphire glass properties

Sapphire Glass properties

Density: 3.98 g/cm ³

Mohs hardness: 9 (second only to diamond)

Fracture toughness: 2-3 MPa · m ¹/²

Young's modulus: 370-400 GPa

Poisson's ratio: 0.23-0.25

Thermal expansion coefficient: 5.0-8.0 x 10 ⁻⁶/° C (within the range of 0 ° C to 1000 ° C)

Thermal conductivity: 25-42 W/m · K (at 25 ° C)

Optical transmittance: High transmittance in the spectral range of 250 nm to 5 μ m, with specific values varying depending on wavelength

Refractive index: approximately 1.76 (in the visible light range)

Melting point: 2050 ° C

Dielectric constant: 11.5 (at 1 MHz)

Breakdown voltage: 13-14 MV/m

Jundro Ceramics can provide you with Sapphire glass machining services that can maintain stability and reliability in special scenarios based on your unique needs