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.

High-Quality Customized Quartz Products from China Suppliers - High-Purity Quartz Instruments Manufacturer at Our Factory Manufacturer, Supplier

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High-Quality Customized Quartz Products from China Suppliers - High-Purity Quartz Instruments Manufacturer at Our Factory Manufacturer, Supplier

Quartz instruments, produced by leading China suppliers and factories, are crafted from high-purity quartz materials. This diverse range includes quartz tubes, boats, crucibles, reactors, spiral tubes, and reaction vessels. Known for their high-temperature resistance, corrosion resistance, excellent light transmittance, and robust chemical stability, these quartz instruments are integral to various sectors, including semiconductors, photovoltaics, chemicals, and scientific research. They serve as essential tools in high-temperature processing, precise synthesis, and optical experiments, ensuring accuracy in operations and stability in equipment performance. Trust in our quality quartz products for your industrial needs

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Product Description

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	72000 MPa
Modulus of rigidity	31000 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	2MM – 20MM

Frequently Asked Questions

Q1 What is the maximum operating temperature of this quartz glass product?

This quartz glass product can be used at up to 1300 °C for short-term applications and up to 1100 °C for long-term continuous use. Its softening point is 1780 °C, making it suitable for high-temperature industrial environments.

Q2 What material is used to manufacture this quartz glass?

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

Q3 What thickness options are available for the quartz glass?

The quartz glass is available in thicknesses ranging from 2MM to 20MM, and it is produced in a circular shape to suit a wide range of application requirements.

Q4 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, which makes it highly resistant to thermal shock and ideal for precision applications where dimensional stability under temperature changes is critical.

Q5 What PPM purity grades are available for this quartz glass?

The quartz glass is available in controlled purity grades of 10 PPM, 20 PPM, and 100 PPM, allowing customers to select the appropriate level of purity based on their specific industrial or scientific application requirements.

Q6 What is the compressive strength and hardness of this quartz glass?

This quartz glass has a compressive strength of 1100 MPa and a Mohs hardness rating of 5.5 to 6.5, demonstrating excellent mechanical durability. Its Young's modulus of 72000 MPa further confirms its rigidity and resistance to deformation under load.

High-Quality Customized Quartz Products from China Suppliers - High-Purity Quartz Instruments Manufacturer at Our Factory Manufacturer, Supplier

Product Description

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