Sapphire Glass is a transparent synthetic material, usually made of  Al₂O₃. Sapphire glass is widely used in a variety of high-end applications, such as watch surfaces, smartphone lenses, camera lenses, submarine windows and laser components, due to its excellent hardness, transparency and scratch resistance.

The main component of sapphire is alumina, its chemical formula is Al2O3. It is a compound composed of oxygen and aluminum. In addition to the main alumina composition, sapphire glass usually contains tiny impurities, such as iron, chromium, titanium, etc., which can affect its color and optical properties.

The production of industrial sapphire glass usually involves melting alumina at high temperatures and forming a monocrystal or polycrystal sapphire material by different methods, such as solidification or vapor deposition. These materials then will experience cutting, grinding and polishing to obtain the most transparent and hard glass sheet or lens.

Sapphire glass, similar in composition to corundum, has a hardness of 9 on the Mohs scale, second only to diamond. It can be produced in a variety of colors by adding various chemical elements, but is commonly used as colourless. It has the advantage of being harder than ordinary glass, so it is relatively expensive, which is mainly used in high-end precision fields.

5mm sapphire glass spectrogram

The main characteristics of sapphire include high hardness, good scratch resistance, high transparency, excellent temperature resistance, high pressure resistance, etc., so it is widely applied in many high-end products.

1. Scratch resistance: sapphire glass is made of artificial sapphire crystal, with extremely high hardness, can resist scratches and wear in daily useto maintain the clarity and gloss of the glass surface.

2. Transparency and optical performance: sapphire glass crystal has a high degree of transparencyand can transmit more light, so that it has a wide range of applications in the field of observation and display. Transmittance band: 185 ~ 5000nm

3. High temperature resistance: the melting point of sapphire glass is 2045°C, and the application temperature is generally below 2000°C.

4. Pressure resistance: As a kindof high-strength glass, the compressive strength of sapphire glass at room temperature can reach 2.1GPa, so it is used as a viewing window in deep sea diving.

(square/ round/ special-shaped); drilling (square/ round/ special-shaped holes); grinding (straight/ round/ beveled edges); grooving (customized to drawings); thickness (can be machined to 0.1mm).

Sapphire glass has good heat resistance, dielectric properties, chemical corrosion resistance, hardness, infrared transmission, chemical stability and thermal conductivity. Therefore, it is commonly used to replace other optical materials to make optical components and infrared optical windows. It is also widely used in far-infrared military equipment, such as night vision infrared and far infrared scopes, night vision cameras, instruments of satellites and space technology, windows for high-power lasers, various optical prisms, optical windows, UV and IR windows and lenses, observation windows for low-temperature experiments, and high precision instruments for navigation and aerospace.