Quartz Glass

Quartz glass is made by melting materials containing silica, such as crystal, silica, and silicon tetrachloride, at high temperatures. Its silicon dioxide content is much higher than ordinary glass, with quartz glass having a silicon dioxide content of 99.999%. Has excellent optical performance, not only has excellent visible light transmittance, but also transmits ultraviolet and infrared rays. Meanwhile, quartz glass is a good acid resistant material. In addition to hydrofluoric acid and thermal phosphoric acid above 300, it can withstand corrosion from sulfuric acid, nitric acid, hydrochloric acid, aqua regia, neutral salts, carbon, and sulfur at high temperatures. Its chemical stability is 30 times that of acid resistant ceramics and 150 times that of nickel chromium alloys and ceramics. It is resistant to high temperatures, heat shock, and has a particularly small coefficient of thermal expansion

Quartz Glass

Quartz glass Advantages

  • Good insulation performance

  • SiO ₂ with a purity of 99.99% or higher

  • Low light absorption

  • Low spontaneous emission

  • Biocompatibility

  • Excellent chemical stability

  • Extremely low coefficient of thermal expansion

  • Excellent transparency performance

  • Suitable for high temperature applications


Quartz Glass Uses


  • Microwave transmission equipment

  • Chemical reactor window

  • Optical Window

  • Laboratory equipment

  • Space Telescope

  • Satellite optical sensor

  • Laser window

  • Semiconductor production equipment

  • Optical lens

  • Fiber optic communication equipment


Products

Quartz Glass Material Properties

Quartz properties

quartz

item

unit

Typical value

Physical property

colour


colourless

density

g/cm³

2.65

Gas   permeability


0

hydroscopicity


<0.1

Mechanical property

Monger   hardness

Lv.

7

Rockwell   hardness

HRA

-

Vickers   Hardness (Hv50)

Gpa(kg/mm)

700

Bending   strength (20 °C)

Mpa

100

Compressive   strength (20 °C)

Mpa

1000

Modulus of   elasticity

Gpa

70

Poisson's   ratio (20 °C)


0.05

Fracture   toughness (20 °C)

MPa*1/2

0.5 MPa·m^0.5

Thermal performance

Thermal   conductivity (20 °C)-400°C

W/(m·K)

12

Thermal   expansion

10-6/℃

0.5

Maximum   service temperature

°C

1000

Electronic property

Dielectric   medium

KV/mm

37

Dielectric   constant

Er

3.8

Dielectric   loss Angle (1MHz)


10^-4


Quartz Glass Machining

Machining Quartz Glass is a highly challenging process due to its exceptional hardness and brittleness. At Jundro Ceramics, we specialize in the high-precision machining of hard and brittle materials. With our technical expertise and advanced equipment, we deliver top-quality quartz glass tailored to the demanding needs of high-precision engineering applications. If you have a current requirement for quartz glass, Jundro is your ideal partner. Our experts are always available to provide technical support and services to meet your needs.

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Industry Applications

Quartz glass applied in the field of optics

High temperature applications

chemical experiment

Quartz glass components used in medical applications

Frequently Asked Question

ask

The hardness of quartz glass？

Q:


The hardness of quartz glass is usually about 7 on the Mohs hardness scale, which makes it harder than many common types of glass. The Mohs hardness scale is a grading system used to measure mineral hardness, which is arranged based on the difference in hardness between minerals. The higher the hardness value, the harder it is.


The high hardness of quartz glass gives it strong scratch and wear resistance, which is also one of the reasons why it is widely used in many applications. In practical use, the hardness of quartz glass makes it less prone to scratches or wear, so it is often used in applications that require wear resistance such as optical lenses, chemical experimental vessels, and high-temperature containers


ask

The use of quartz glass

Q:

Quartz glass, also known as fused silica or quartz crystal, is utilized across diverse industries due to its exceptional properties. Its high transparency to ultraviolet, visible, and infrared wavelengths makes it invaluable in optics, laser technology, and UV lamps. Additionally, its resistance to thermal shock and chemical corrosion renders it ideal for laboratory glassware and high-temperature applications. Quartz glass also finds uses in the semiconductor industry, photovoltaics, fiber optics, and more, owing to its durability, stability, and versatility.

ask

The melting point of quartz glass

Q:

The melting point of quartz glass is approximately between 1713 ° C (3100 ° F) and 1723 ° C (3133 ° F). This temperature range enables quartz glass to remain stable at high temperatures and not easily melt or deform, making it widely used in high-temperature processes and experiments

Dongguan Jundro ceramics Technology Co.,Ltd

E-mail：info@jundro.com

Tel：+86-769-82913501

Fax：+86-769-82913801

Add: Room 306, Gate B, Unit 1, Block 2 South, No. 1 Yile Road, Songshan Lake, Dongguan City, Guangdong Province, China（523808）

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