Sapphire glass has an interesting combination of mechanical, optical, and thermal properties, and a porosity of zero. It is precisely because of these characteristics that sapphire products have been widely used in the field of technology. As an important technological crystal, it has been widely used in many fields such as technology, national defense and civilian industry, electronic technology, etc., such as infrared window materials, substrates in microelectronics, laser substrates, optical components, and so on.

Sapphire single crystal is an excellent multifunctional material with high temperature resistance, good thermal conductivity, high hardness, transparency to infrared radiation, and good chemical stability. Widely used in many fields such as industry, national defense, scientific research, etc. (such as high-temperature resistant infrared windows). At the same time, it is also a widely used single crystal substrate material, which is commonly used in the current blue, purple, white light emitting diode (LED) and blue laser (LD) industries (gallium nitride film needs to be epitaxially grown on sapphire substrate first), and is also an important superconducting film substrate. In addition to producing high-temperature superconducting films such as Y series and La series, it can also be used to grow new and practical MgB2 (magnesium diboride) superconducting films (usually single crystal substrates are chemically corroded during the production process).

Sapphire glass has excellent optical properties, mechanical properties, and chemical stability. It has high strength, hardness, and corrosion resistance, and can work at high temperatures close to 2000 ℃. Therefore, it is widely used in high-tech fields such as LED semiconductor devices, electronics, communications, lasers, infrared military devices, satellite space technology, etc. Its unique lattice structure, excellent mechanical properties, and good thermal performance make sapphire crystal an ideal substrate material for practical applications such as semiconductor light-emitting diodes (LEDs), large-scale integrated circuits, superconducting nanostructured thin films, etc.

Sapphire glass is a crystal mirror surface synthesized by artificial compression, with the advantages of high density and less susceptibility to scratches. The hardness of the mirror surface is in the range of 2200-2300 (seven times the hardness of steel), and the Mohs hardness is 9. Good hardness, good transparency, low friction, high temperature resistance, and better than crystal. Compared with glass products, optical windows made of sapphire have excellent wear resistance, toughness, and fracture resistance.