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 Instruments by Trusted Factory Manufacturers, Supplier

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Custom Customized Quartz Products from China Suppliers - High-Purity Quartz Instruments by Trusted Factory Manufacturers, Supplier

Quartz instruments, manufactured from high-purity quartz material, are essential tools that include quartz tubes, quartz boats, quartz crucibles, quartz reactors, quartz spiral tubes, and quartz reaction vessels. These products boast outstanding features such as high temperature resistance, corrosion resistance, excellent light transmittance, and strong chemical stability, making them ideal for various applications. Widely utilized in industries such as semiconductor, photovoltaic, and chemical research, these quartz instruments are crucial in high-temperature processing, precision synthesis, and optical experiments. As a leading factory in China, we proudly supply these core instruments, ensuring process accuracy and reliable equipment operation for our clients worldwide

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Product Description

Product Specifications

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 the quartz glass made from?

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

Q What is the maximum long-term use temperature of this quartz glass?

The quartz glass can withstand a long-term use temperature of up to 1100 °C. For short-term applications, it can handle temperatures up to 1300 °C. Its thermal processing temperature ranges between 1750 °C and 2050 °C.

Q What thickness options are available for the quartz glass?

The quartz glass is available in a thickness range of 2 MM to 20 MM, with a circular shape. This wide range makes it suitable for various industrial and precision applications.

Q What PPM purity grades are available?

The quartz glass is available in controlled purity grades of 10 PPM, 20 PPM, and 100 PPM. These options allow customers to select the appropriate purity level based on their specific application requirements, particularly in semiconductor and high-precision industries.

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

The quartz glass features an extremely low thermal expansion coefficient of 5.5 × 10⁻⁷ cm/cm·°C. This makes it highly resistant to thermal shock and dimensional changes under varying temperature conditions, which is a key advantage over standard glass materials.

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

This quartz glass exhibits a compressive strength of 1100 MPa and a flexural strength of 67 MPa, with a Young's Modulus of 72,000 MPa and a Modulus of Rigidity of 31,000 MPa. Its Mohs hardness ranges from 5.5 to 6.5, demonstrating excellent durability and resistance to mechanical stress.

Custom Customized Quartz Products from China Suppliers - High-Purity Quartz Instruments by Trusted Factory Manufacturers, Supplier

Product Description

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