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In which industries can sapphire glass replace quartz glass

Time:2025-04-29

In daily work, we often receive inquiries from customers who want to usesapphire glassTo replace the one currently in usequartz glassThe customer said that the hardness of quartz glass is not strong, which requires frequent replacement of quartz glass components, resulting in high costs and heavy labor. They want to choose sapphire glass with better hardness to replace quartz glass; Some inquiry customers also said they want to use sapphire glass with stronger laser resistance to replace quartz glass, and so on. Today, let's talk about in which fields sapphire glass can replace quartz glass.

1、 Sapphire glass

sapphire glass

Sapphire glass is an artificially synthesized material mainly composed of aluminum oxide (Al ? O ∝), and its chemical and physical properties are the same as natural sapphire.

?Physical characteristics

The Mohs hardness reaches level 9,Second only to diamonds, it has excellent wear resistance of 15;

High brittleness,Has weak resistance to strong impacts and is easily scratched by hard objects such as granite and concrete;

Good light transmittance,Commonly used in scenes that require high transparency, such as optical windows and display screens;

High temperature resistance and chemical corrosion resistance,And it has excellent thermal conductivity and dielectric properties.

Difference from Natural Sapphire

Same ingredients but different formation methods:Natural sapphires require long-term geological processes to form, while composite products are rapidly prepared by high-temperature melting of alumina powder;

Differences in usage:Natural sapphire is commonly used in jewelry, while synthetic products focus on industrial functions;

Cost difference:Laboratory synthesis significantly reduces production costs.

Main application areas

Consumer Electronics and Clocks:High end watch mirror and mobile phone screen (need to balance cost and impact resistance);

Industry and Military:Infrared/far-infrared optical equipment (such as night vision devices, laser windows), satellite sensors, and aerospace instrument observation ports;

Research field:Low temperature experimental observation window, high-precision optical prism.

2、 Quartz glass

quartz glass

Quartz glass is a special industrial technical glass composed of silicon dioxide (SiO ?) as a single component.

? Physical and chemical properties

High purity and stability

The silicon dioxide content exceeds 99.99%, without additives, with excellent chemical stability. It only reacts with hydrofluoric acid and hot phosphoric acid, and has an extremely low coefficient of linear expansion (1/10~1/20 of ordinary glass). It has strong thermal shock resistance and can withstand temperatures up to 1100~1400 ℃.

Optical and mechanical properties

Mohs hardness level 7, excellent transparency, can transmit ultraviolet to infrared spectra (185-2800nm), suitable for high-precision optical systems. Good electrical insulation performance, low dielectric loss, and stable at high temperatures.

Main application areas

Semiconductor and Electronics Industry?

Used for wafer manufacturing, high-temperature furnace tubes, lithography machine lenses, etc., to meet the requirements of high purity and high temperature resistance.

Optics and Laser Technology ?

Produce optical systems for spectrophotometers, laser windows, infrared night vision lenses, etc., relying on their ultraviolet/infrared transmission characteristics.

? Aerospace and scientific research equipment ?

As a window material for satellite sensors, spacecraft observation windows, and low-temperature experimental equipment.

laboratory instruments ?

Used for high-purity chemical reagent extraction equipment, high-temperature reaction vessels, etc.

Comparison of important parameters between sapphire glass and quartz glass

characteristic	sapphire glass	quartz glass
Hardness (Mohs)	9	7
Laser damage threshold	higher	Lower
Thermal conductivity (W/m · K)	40	1.4

IIIIn which industries is sapphire glass used

Can replace quartz glass

ask

In which industries can sapphire glass replace quartz glass？

0 1

Optics and Optoelectronics Industry

Laser system window

Sapphire glass has good transparency in the ultraviolet to infrared wavelength range, with a higher laser damage resistance threshold than quartz glass, making it suitable for the transmission window of high-power laser equipment.

Fiber optic gyroscope and inertial navigation

Its low birefringence characteristic can improve the accuracy of fiber optic gyroscopes and replace quartz glass for precision navigation components.

Infrared optical components

In scenarios such as infrared transparent optical windows, it can replace other materials (including quartz glass) as high stability optical components.

0 2

Semiconductor and Electronic Manufacturing

Vacuum chamber window

Resistant to ultra-high vacuum environment, used for semiconductor coating equipment windows, with better pressure resistance than quartz glass.

LED substrate and projector lens

High thermal conductivity (40W/m · K) and chemical stability support the growth of GaN epitaxial layers, accounting for 60% of sapphire consumption.

0 3

medical equipment

Surgical blade

The edge sharpness of single crystal sapphire blades reaches 0.1 μ m, and the wound healing speed is 30% faster than traditional steel blades.

Implantable sensor packaging

Excellent biocompatibility, suitable for packaging precision medical devices such as blood glucose monitoring chips.

0 4

Automobiles, consumer electronics, and precision instruments

Smartphone camera protective lens

High hardness (Mohs 9 grade) and superior transparency compared to traditional glass, used for lens protection and supporting ultra-thin wall processing.

High end watch mirror

By using five axis machining technology to achieve complex pattern carving, the wear resistance is significantly better than that of ordinary glass materials.

Sapphire HUD LCD screen module cover glass

0 5

EADS

Optical windows and high-temperature resistant components

Capable of withstanding extreme temperatures and pressures, used for flame detector window panels and aircraft optical windows, with surface accuracy up to micrometer level.

Xinyuan Optics: 30 years of professional sapphire glass product manufacturer

Xinyuan Optical Industry (Shenzhen) Co., Ltd. is a manufacturer and processor of sapphire productsDrafting unit of China industry standard for synthetic sapphire glass，have30 years of experience in sapphire research and development, production, and manufacturingWell equipped, it is one of the few in the markethaveFrom raw material production (sapphire crystal growth) to later stages (screen printing, electroplating, coating)The complete process of processing. The company obtained ISO9001 quality management system certification in 2008, as well as REACH and RoHS certifications, giving it a strong market advantage. Welcome customers and partners with relevant needs to contact us for consultation~

*The picture shows the application areas of Xinyuan Optical's sapphire glass products

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In which industries can sapphire glass replace quartz glass

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