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 High-Purity Quartz Products from China Factory - Reliable Suppliers for Semiconductor and Scientific Research Manufacturer, Product

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Custom Customized High-Purity Quartz Products from China Factory - Reliable Suppliers for Semiconductor and Scientific Research Manufacturer, Product

Quartz instruments, manufactured from high-purity quartz material, are essential components in various industries. Our product range includes quartz tubes, quartz boats, quartz crucibles, quartz reactors, quartz spiral tubes, and quartz reaction vessels. Renowned for their high temperature resistance, corrosion resistance, excellent light transmittance, and strong chemical stability, these instruments are crucial in semiconductor, photovoltaic, chemical, and scientific research applications. As a leading factory and trusted suppliers in China, we ensure that our quartz instruments are at the forefront of high-temperature processing, precision synthesis, and optical experiments, providing reliable solutions for process accuracy and stable equipment operation

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Product Description

Mechanical & Physical Properties — 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 The Quartz Glass Brick
PPM grade	Controlled 10 / 20 / 100 PPM
Shape	Circle
Thickness	2 MM – 20 MM

Frequently Asked Questions

Q What material is this quartz glass made from, and what purity levels are available?

This quartz glass is made from Silicon Dioxide (Natural Quartz). It is available in controlled purity grades of 10 PPM, 20 PPM, and 100 PPM, making it suitable for applications that demand high material cleanliness and consistency.

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

The quartz glass supports a short-term use temperature of up to 1300 °C and a long-term use temperature of up to 1100 °C. Its softening point is 1780 °C, and thermal processing can be performed between 1750 °C and 2050 °C.

Q What makes this quartz glass suitable for high-precision optical applications?

Its index of refraction of 1.4585, transparent and colorless appearance, bubble-free and line-free surface, and extremely low thermal expansion coefficient (5.5 × 10⁻⁷ cm/cm·°C) make it highly suitable for precision optical and semiconductor applications.

Q What thickness options are available, and what shape does this product come in?

The quartz glass is available in circular shapes with thickness options ranging from 2 MM to 20 MM, providing flexibility for a wide range of industrial and scientific applications.

Q How does the low thermal expansion coefficient benefit industrial use?

The extremely low thermal expansion coefficient of 5.5 × 10⁻⁷ cm/cm·°C means the material experiences minimal dimensional change under temperature fluctuations. This ensures excellent thermal shock resistance and dimensional stability, which is critical in semiconductor manufacturing, laboratory equipment, and high-temperature industrial processes.

Q What are the key mechanical strength properties of this quartz glass?

The quartz glass offers a compressive strength of 1100 MPa and a Young's modulus of 72,000 MPa, reflecting its exceptional rigidity and load-bearing capacity. With a Mohs hardness of 5.5 to 6.5 and a modulus of rigidity of 31,000 MPa, it provides reliable performance in mechanically demanding environments.

Custom Customized High-Purity Quartz Products from China Factory - Reliable Suppliers for Semiconductor and Scientific Research Manufacturer, Product

Product Description

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