What is Quartz or Silicon DiOxide (SiO2)?

Quartz is the name given to extremely pure silicon dioxide (SIO2) crystals. Crystal Quartz stone, also known as Quartz Crystal, can be found in many areas across the globe. It is a solid and hard mineral that forms more than 10% of the earth crust. Crystals are in the shape of hexagonal prisms when taken from the ground.

Quartz is the mineral form of silica powder, and it is used in ceramic glazes, clay bodies, grog for added texture, quartz glass for instrumentation, connectors, pipes, valves, and more. It is often used to increase thermal expansion, and it is very resistant to both chemicals and heat making it a great option for many applications like optics. Optical-grade quartz crystals are used to make specialized lenses, windows and filters used in lasers, microscopes, telescopes, electronic sensors, and scientific instruments.

Quartz Machining for Ceramics

Quartz starts its journey being mined from rock and then being powderized, or being grown in laboratories using hydrothermal activity. Quartz is one of many ceramic materials widely manufactured and readily used in different industries related to quartz ceramics.

Other ceramic materials include silicon, sapphire, graphite, aluminum nitride, aluminum 6061, 998 alumina, and 995 alumina.

Quartz is used in components that require resistance to heat, corrosion, chemicals, and prevent contamination. Any parts that require precision, high-temperature resistance, or high-contamination control are great use-cases for quartz ceramics.

Common quartz items that are often machined are containers, nozzles, quartz glass parts, quartz plates, rods, oscillators, optical-sensors, optical lenses, and more. Billions of quartz crystals are being used to make oscillators for watches, clocks, radios, televisions, computers, cell phones, meters, GPS equipment, and more.

We Offer Custom Quartz Ceramic Products Based On Your Specifications

Applied Ceramics manufactures its quartz into different shapes and custom designs requiring high specifications and tolerances. With over 20 years of experience in quartz ceramic manufacturing, the ultra-precision parts made by Applied Ceramics consistently meet the most formidable demands. We are your reliable and trusted quartz ceramics manufacturer that can help you fabricate custom quartz products to any specifications.

Contact an experienced Applied Ceramics professional to discuss your quartz ceramics or quartz machining needs, and learn more about our process to design and deliver the product you need.

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  • Automotive & Energy
  • Precision Electronics
  • Medical Devices
  • Quartz Glass
  • Precision Parts
  • High-Temperature Parts
  • Containers for Chemicals & Fluidics
  • Parts for Contamination Control
  • Mirror Substrates & Optical Parts
  • Parts for Plasma Processes
  • Parts for Light Sources


  • High Use Temperature
  • Low Thermal Expansion
  • Superior Thermal Shock Resistance
  • Extremely Low Thermal Conductivity
  • Excellent Chemical Resistance
  • High Purity
  • Less Material Defects
  • Good Machinability
  • High purity level
  • Thermal Shock Resistance
  • High Visible & IR Transmission
  • Maximum temperature 1300°C (1100°c continuously)
  • Quartz

    Properties Units Quartz
    Density g/cm3 2.2
    Color white/transparent
    Water Absorption % 0
    Flexural Strength MPa@room temp.(R.T.) 80
    Compressive Strength MPa@R.T. 650-1100
    Hardness GPa 11.5-13.5
    Coefficient of Linear Thermal Expansion 1E-6/°C
    (»25°C to Ј1000°C)
    Thermal Conductivity W/m°K@R.T. 1.4
    Specific Heat cal/g°C@R.T. 0.16
    Thermal Shock Resistance D T(°C)
    Maximum Use Temperature °C 1200
    Volume Resistivity Ohm. cm@R.T. 7×107
    Dielectric Constant 1MHz@R.T. 3.75

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