What information do you need to engineer a custom quartz tube or component?

Please send outer and inner diameter (or wall thickness), length, required tolerances, end configuration (open, closed, flanged, ground joint or welded fittings), material grade (transparent or opaque fused quartz), working temperature and atmosphere, annual or batch quantity, and a drawing in PDF, DWG or STEP format. Complete data lets our engineers confirm manufacturability and lead time in a single review.

What is the maximum operating temperature of fused quartz?

Transparent fused quartz typically supports continuous service around 1,100 °C and short exposures up to roughly 1,250 °C, with a softening point near 1,683 °C. Real limits depend on grade, load, atmosphere and cycle time. Above about 1,100 °C, surface contamination such as alkali residue from skin contact accelerates devitrification, so quartzware should be cleaned and handled with clean gloves before firing.

How does Southeast Quartz verify quality before shipment?

Products undergo helium mass-spectrometry leak detection, pressure resistance testing and purity testing before leaving the factory, together with dimensional inspection against the customer drawing, to ensure stable performance with no impurities and no leakage.

Can you manufacture oversized quartz tubes and non-standard quartz shapes?

Yes. Our workshop combines flame hot-working with CNC cold machining, so we produce oversized fused quartz tubes, bell jars, slotted quartz boats, flanged reactors, irregular shaped quartz sheets and fully customized quartz instruments according to customer equipment parameters.

Where is Southeast Quartz located and which markets do you export to?

Our factory is at No. 1 Qingsheng Rd., Qinghu Industrial Park, Donghai County, Jiangsu, China, within China's best-known crystal and quartz industrial cluster. Besides customers throughout China, we export to Europe, the Americas, Southeast Asia and the Middle East.

Custom Customized Quartz Products from China Suppliers - High-Purity Quartz Factory for Semiconductor and Optical Applications Manufacturer, Products

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Custom Customized Quartz Products from China Suppliers - High-Purity Quartz Factory for Semiconductor and Optical Applications Manufacturer, Products

Discover high-quality quartz instruments manufactured in China, including a diverse range of products such as quartz tubes, quartz boats, quartz crucibles, quartz reactors, quartz spiral tubes, and quartz reaction vessels. Our quartz materials boast exceptional features, including high temperature resistance, corrosion resistance, excellent light transmittance, and robust chemical stability. These instruments are vital in various industries, including semiconductor, photovoltaic, chemical, and scientific research. As leading suppliers and factory producers of quartz products, we ensure that our instruments meet the highest standards for high-temperature processing, precision synthesis, and optical experiments, guaranteeing optimal process accuracy and stable equipment operation

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Product Description

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Mechanical Behavior & Standard Values

Mechanical Behavior	Standard Values
Density	2.2 g/cm³
Compressive strength	1100 MPa
Flexural strength	67 MPa
Poisson's ratio	0.14 ~ 0.17
Young's modulus	72,000 MPa
Modulus of rigidity	31,000 MPa
Mohs hardness	5.5 ~ 6.5
Transformation point	1280 °C
Softening Point	1780 °C
Annealing point	1250 °C
Specific heat (20 ~ 350 °C)	670 J/kg·°C
Thermal conductivity (20 °C)	1.4 W/m·°C
Index of refraction	1.4585
Low thermal expansion coefficient	5.5 × 10⁻⁷ cm/cm·°C
Thermal processing temperature	1750 ~ 2050 °C
Short-term use temperature	1300 °C
Long-term use temperature	1100 °C
Material	Silicon Dioxide (Natural Quartz)
Color	Transparent or Colorless
Surface	No Air Bubble, No Line
Strain	1270°C Fused Quartz Glass Brick
PPM grade	Controlled 10 / 20 / 100 PPM
Shape	Circle
Thickness	2 mm – 20 mm

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Frequently Asked Questions

Q What is the maximum operating temperature for fused quartz glass?

A Fused quartz glass can withstand a short-term use temperature of up to 1300°C and a long-term use temperature of up to 1100°C. Its thermal processing temperature ranges from 1750°C to 2050°C, making it suitable for extreme high-temperature applications.

Q What material is this quartz glass made from?

A The quartz glass is made from Silicon Dioxide (SiO₂) derived from Natural Quartz. It is transparent or colorless in appearance, with a surface free of air bubbles and lines, ensuring high optical and structural quality.

Q What thickness options are available for the quartz glass?

A The quartz glass is available in a thickness range of 2mm to 20mm, with a circular shape. Custom thickness within this range can be accommodated based on specific application requirements.

Q What is the thermal expansion coefficient of this quartz glass?

A The quartz glass has an extremely low thermal expansion coefficient of 5.5 × 10⁻⁷ cm/cm·°C. This ultra-low expansion rate makes it highly resistant to thermal shock and dimensional change under temperature fluctuations.

Q What PPM purity grades are available for this quartz glass?

A The quartz glass is available in controlled purity grades of 10 PPM, 20 PPM, and 100 PPM. These grades allow customers to select the appropriate purity level based on their semiconductor, optical, or industrial application needs.

Q How does the compressive strength of fused quartz glass compare to its flexural strength?

A Fused quartz glass has an exceptionally high compressive strength of 1100 MPa, making it highly resistant to compressive loads. Its flexural (bending) strength is 67 MPa, which, while lower, is typical for glass materials. For applications involving bending forces, additional structural support is recommended.

Custom Customized Quartz Products from China Suppliers - High-Purity Quartz Factory for Semiconductor and Optical Applications Manufacturer, Products

Product Description

Mechanical Behavior & Standard Values

Frequently Asked Questions

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