Thermal Elements

High Purity Quartz Tube and Quartz Boat for Laboratory Furnaces

Item Number : KT-SYG

Price varies based on specs and customizations

Max Continuous Operating Temperature: 1100°C
Max Short-term Temperature: 1450°C
Thermal Shock Resistance: Survives 1100°C to 20°C water quench without cracking

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Product Overview

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High-purity quartz tubes and quartz boats are essential consumable components for laboratory tube furnaces and high-temperature processing equipment. Fabricated from premium-grade fused silica, these components combine exceptional thermal endurance, chemical inertness, and optical transparency, enabling contamination-free operation in demanding thermal and corrosive environments. Their precision-engineered dimensions and surface finishes ensure seamless integration with standard furnace systems.

These quartz components are indispensable across a wide range of industries, including semiconductor fabrication, materials science research, chemical synthesis, and advanced manufacturing. From serving as process chambers and sample carriers in tube furnaces to acting as protective sleeves or reactor windows, they deliver consistent performance under extreme conditions.

Built to withstand rapid thermal cycling and aggressive chemical atmospheres, this quartzware provides reliable, repeatable results over thousands of cycles. Engineers and researchers trust these high-purity components to maintain process integrity and sample purity, making them a cornerstone of modern laboratory infrastructure.

Key Features

Exceptional High-Temperature Endurance: The quartz softening point is approximately 1730°C, allowing continuous operation at 1100°C and short-term exposure up to 1450°C. This makes the tubes and boats suitable for prolonged high-temperature processes such as calcination, annealing, and sintering.
Superior Thermal Shock Resistance: Thanks to an extremely low coefficient of thermal expansion, the quartz can endure rapid temperature changes without failure. In standardized tests, components heated to 1100°C and immediately plunged into room-temperature water showed no signs of cracking, ensuring reliability in processes with frequent thermal cycling.
Unrivaled Chemical Stability: Quartz exhibits outstanding resistance to most acids, alkalis, and solvents. It is impervious to all acids except hydrofluoric acid, with an acid resistance 30 times greater than ceramics and 150 times greater than stainless steel, minimizing contamination risks even under harsh conditions.
Broad-Spectrum Optical Transparency: The material transmits light efficiently from ultraviolet (over 80% at 185 nm) through visible (over 95%) to infrared, enabling its use in optical reactors, photochemical setups, and UV sterilization systems.
High Electrical Insulation: With a resistivity roughly 10,000 times that of ordinary glass, these quartz components provide excellent electrical isolation, crucial for high-voltage or high-frequency applications.
Ultra-High Purity and Low Outgassing: Made from select high-purity silica, the tubes and boats contain minimal metallic impurities, reducing the risk of sample contamination in sensitive analytical and semiconductor processes.
Customizable Configurations: In addition to the extensive standard size range, we offer custom machining, end forming (flanges, connectors), and special surface treatments to meet unique experimental or production requirements.

Applications

Application	Description	Key Benefit
Laboratory Tube Furnace Heating	Quartz tubes serve as process chambers and quartz boats as sample carriers in tube furnaces for materials synthesis, thermal treatment, and catalyst testing.	Ensures uniform temperature distribution and minimal reactivity with samples, providing reliable and reproducible experimental data.
Semiconductor Diffusion and Oxidation	Utilized as furnace tubes and wafer boats in high-temperature diffusion and oxidation steps for silicon wafer processing.	Ultra-high purity prevents metal ion contamination, preserving the electrical characteristics of semiconductor devices.
Carbon Nanotube and Nanomaterial Growth	Quartz boats function as catalyst substrates in CVD and ammonia reduction processes for growing carbon nanotubes and other nanostructures.	Chemical inertness avoids unwanted reactions, ensuring consistent product morphology and high purity.
Optical Spectroscopy and Photoreactor Systems	High-purity quartz tubes with excellent UV-Vis transmission are used in flow photoreactors and spectroscopic cells.	Broad optical window allows accurate light delivery and detection without absorption artifacts.
Environmental and Water Purification	Quartz sleeves for UV disinfection units and corrosion-resistant pipes for aggressive chemical transport.	High UV transmission and exceptional durability extend service life in demanding water treatment environments.
High-Temperature Corrosion Testing	Tubes and boats used to hold samples exposed to corrosive gases at elevated temperatures in materials research.	Resistance to acid and salt fumes protects the equipment and ensures test validity.
Thermal Analysis (TGA/DSC)	Quartz boats as sample pans for thermogravimetric analysis and differential scanning calorimetry up to 1100°C.	Low thermal mass and inertness prevent side reactions, delivering accurate thermal data.
Advanced Ceramic and Glass Processing	Used as supports and containers in the sintering and melting of advanced ceramics and specialty glasses.	High-temperature stability and non-wetting properties prevent sticking and contamination.

Technical Specifications

The KT-SYG series encompasses a comprehensive selection of high-purity quartz tubes and quartz boats, precision-manufactured to meet the requirements of various furnace models and applications. All components are crafted from high-purity fused quartz (SiO₂ ≥ 99.99% typical) to guarantee minimal impurity migration. Dimensions are in millimeters unless otherwise noted. Custom sizes and configurations are available upon request.

Quartz Tube Specifications

Outer Diameter (mm)	Wall Thickness (mm)	Available Lengths (mm)
25	2	600, 1000, 1200
25	2.5	600, 1000, 1200
40	3	800, 1000
50	3	450, 500, 600, 700, 800, 1000, 1200, 1400, 1500
50	4	600, 1000, 1200, 1400, 1500
50	5	1000, 1200
60	3	800, 1000, 1200, 1400
60	4	1000, 1200
60	5	1000, 1200
80	3	1000, 1200, 1400
80	4	1000, 1200, 1400, 2000
80	5	1000, 1200
100	3	1000, 1200, 1400, 1500
100	4	1000, 1200, 1400
100	5	1000, 1200, 1400

Quartz Boat Specifications

Dimensions (L × W × H, mm)
50 × 10 × 5
100 × 10 × 5
50 × 15 × 7.5
100 × 15 × 7.5
50 × 20 × 10
100 × 20 × 10
50 × 25 × 12.5
100 × 25 × 12.5
50 × 30 × 15
100 × 30 × 15
200 × 30 × 15
50 × 40 × 20
100 × 40 × 20
200 × 40 × 20
50 × 50 × 25
100 × 50 × 25
200 × 50 × 25

Why Choose This Product

Proven Robustness in Demanding Environments: Trusted in critical applications from semiconductor fabs to advanced materials labs, these quartz components deliver consistent performance over thousands of thermal cycles without degradation.
Precision Manufacturing for Seamless Integration: Every tube and boat is fabricated to tight dimensional tolerances, ensuring compatibility with standard furnace systems and reducing setup time.
Uncompromising Material Quality: We source only the highest-grade quartz, verified for purity and homogeneity, to minimize outgassing and sample contamination even at extreme temperatures.
Tailored Solutions for Unique Needs: Beyond standard sizes, our engineering team can design custom quartzware—including specific diameters, boat geometries, flanges, and ground joints—to match your exact process.
Responsive Lifetime Support: From selection assistance to post-installation troubleshooting, our specialists provide expert guidance to maximize your investment. Contact us today to request a quote or discuss your custom high-purity quartz solution.