Sapphire is a single crystal aluminum oxide (Al2O3).Its Mohs hardness is 9,it is one of the hardest materials.Sapphire has good mechanical strength,and it is also transparent from visible to IR spectrum.So,it is always used as window material where scratch resistance is required.
Item No :
Sapphire MaterialProduct Origin :
FuZhouProperties:
Transmission range: | 180nm ~ 4500nm |
Lattice Constant: | a=4.75 A; c=12.97A |
Density: | 3.98 g/cm3 |
Thermal Conductivity: | 0.04W/m/K |
Refractive Index: | 1.755@1um |
Expansion Coefficient: | 8.4x10-6/K |
Mohs Hardness: | 9 |
Melting Point: | 2030℃ |
Why choose Sapphire Material?
Sapphire material, a single-crystal optical material based on aluminum oxide, serves as a key component in high-end optical and electronic fields due to its broad-band high transmittance, extreme hardness, and excellent thermal stability. Its crystalline structure enables wide-spectrum transmission from ultraviolet to mid-infrared, while offering superior chemical resistance and corrosion tolerance for stable performance in harsh environments. With high thermal conductivity and outstanding mechanical strength, sapphire is not only used for optical windows and substrates in high-power laser systems, but also as a semiconductor substrate for epitaxial growth, commonly appearing in infrared imaging systems, wear-resistant optical components, and precision optical assemblies in high-temperature environments.