Silicon Nitride Ceramic Tube
GORGEOUS silicon nitride tubing is made of high-quality silicon nitride and can be customized in various purities and sizes.
High-Quality Silicon Nitride Tubes
Custom Processing Suppliers
Silicon Nitride Tube Description
Silicon nitride tubes can operate stably in extremely high-temperature and corrosive environments. They boast the exceptional properties of being lighter than steel and tougher than common ceramics. Their weight is similar to that of silicon carbide, yet they offer superior thermal shock and wear resistance.
Silicon nitride boasts a fracture toughness of up to 7 MPa·m½, and even rapid cooling from 800°C to room temperature will not crack, making it an ideal material for the metallurgical industry and precision machinery.
With 15 years of experience in advanced ceramic manufacturing, GORGEOUS has provided a variety of silicon nitride ceramic solutions to customers in over 60 countries worldwide. Whether you’re seeking lightweight, high-strength, extreme wear resistance, or complex formability, we utilize five proven processes: SRBSN, HPSN, RBSN, GPSN, and HIP-SN to match your manufacturing solution and ensure the optimal balance between performance and cost.
If you’re looking for a silicon nitride ceramic tube that can operate stably in extreme environments, please contact our engineering team for a customized silicon nitride solution.
Custom Silicon Nitride Tubes in Any Shape for You
Provide Customers with Customized Solutions According to Their Needs
Supply Silicon Nitride Ceramic Tubes for Various Purposes
GORGEOUS can customize various types of alumina tubes for customers, including: protection tubes, insulation tubes, high-temperature furnace tubes, filter tubes, etc., to meet the needs of various industries.
Standard Silicon Nitride Tube
We supply standard silicon nitride tubes, and various shapes and sizes can be customized.
Si3N4 Thermocouple Protection tube
Supply and customize Si3N4 protection tubes of various sizes, specially designed for thermocouples.
Advantages of Silicon Nitride Tube
High Fracture Toughness
Thermal Shock Resistance
Corrosion Resistance
High Temperature Resistance
Product Parameters
| Name | Silicon Nitride Tube | |||
| Density | g/cm3 | 3.18-3.40 | ||
| Compressive Strength | MPa | 3000 | ||
| Flexural Strength @ 25°C | MPa | 760-830 | ||
| Weibull-Modulus m | – | 12-20 | ||
| Fracture Toughness KI | MPa m1/2 | 6.2-8 | ||
| Young‘s Modulus | GPa | 300 | ||
| Hardness | GPa | 15 | ||
| Poisson’s Ratio | – | 0.26 | ||
| Thermal Conductivity @ 20°C | W/mK | 25-28 | ||
| Thermal Shock Parameter R1 | K | 550-690 | ||
| Thermal Shock Parameter R2 | W/m | 15-18 | ||
| CTE1 25°C ➞ 250°C | 10-6/K | 1.9 | ||
| CTE1 25°C ➞ 1000°C | 10-6/K | 3.1 | ||
| Maximum Temperature (Oxidizing) 2 | °C | 1400 | ||
| Dielectric constant | °C | 1200 | ||
| Volume Resistivity @ 25°C | ohm-cm | 1014 | ||
Application of Silicon Nitride Tube
Metallurgy & Foundry
In the metallurgical and foundry industries, silicon nitride tubes offer superior thermal shock resistance and strong corrosion resistance, protecting thermocouples from corrosion during long-term immersion in molten aluminum and zinc.
Commonly used in: Thermocouple protection tubes, metallurgical stirring rods/immersion tubes.
igh-Temperature Mechanical Components
Silicon nitride tubes are used in the manufacture of high-temperature mechanical components. They can withstand high speeds and loads and are 60% lighter than steel. They are also used in steel mill heating furnaces and gas turbine bearing support tubes.
Common applications: High-temperature bearing tubes and mechanical seal tubes
Chemical & Corrosion-Resistant Equipment
Silicon nitride is highly corrosion-resistant and non-reactive with acids, alkalis, and organic solvents. Its surface is dense and its lifespan far exceeds that of metal pipes. Therefore, it is widely used in the chemical industry.
Common applications: Corrosion-resistant piping and protective sheaths in high-temperature reactors.
High-Temperature Measurement & Sensing
In the field of high-temperature measurement and sensing, silicon nitride tubes can be used for temperature measurement and protection in industrial furnaces, and can also protect thermocouples for long-term stable operation in high-temperature oxidizing atmospheres.
Common applications: Thermocouple protection tubes and protection tubes for continuous temperature measurement systems.
Energy & Aerospace
Silicon nitride is widely used in the energy and aerospace sectors due to its lightweight, high-temperature strength retention, and excellent fatigue resistance.
Common applications: thermal insulation protective tubes and high-temperature radiation-resistant insulation protective tubes.
Are You Worried About the MOQ?
Special minimum order quantity (MOQ) of one piece is available to meet customers with smaller needs. Take the first step and experience our services.
Why Choose GORGEOUS?
GORGEOUS prioritizes quality control to ensure that every silicon nitride tube product meets customer specifications. Our rigorous quality inspection process ensures that every step, from raw materials to finished ceramic product, undergoes precise inspection and testing.
Furthermore, the GORGEOUS factory is certified to IATF16949:2016 for the automotive industry and ISO9001:2015 for quality management, enabling us to provide customers with the highest quality custom services.
Our Pass Successes Testimonials
The custom silicon nitride ceramic tubes we received exceeded our expectations. The precision and high-temperature durability are exactly what we needed for our thermal processing line. Great communication and fast delivery.
Michael Anderson
Excellent performance under thermal shock conditions. Custom tubes are perfectly sized and ideal for high temperature testing in our lab. GORGEOUS is a trusted supplier of advanced ceramics.
Lukas Meier
GORGEOUS is very impressive in both its material quality and customization capabilities. These silicon nitride tubes are perfect for our aerospace prototype testing. We look forward to a long-term partnership and will definitely order again for future projects.
Emily Thompson
FAQs
What are the main advantages of using silicon nitride tubing compared to other ceramic materials?
Compared to ceramic materials such as alumina and silicon carbide, silicon nitride tubing offers higher fracture toughness, excellent thermal shock resistance, and lighter weight. Silicon nitride tubing also boasts high strength at high temperatures, is less prone to cracking, and offers excellent corrosion and wear resistance, making it ideal for high-temperature, high-stress, and highly corrosive working environments.
Can silicon nitride tubing be customized to specific sizes or specifications?
Yes. GORGEOUS can customize silicon nitride tubing with different outer diameters, inner diameters, and lengths based on customer needs. We also support customization options such as closed-end tubing, open-end tubing, and custom connectors.
How does the GPSN production method affect the quality of silicon nitride tubes?
GPSN (Gas Pressure Sintering Nitride) is one of the most common methods for producing silicon nitride ceramics. This process significantly improves the density and strength of silicon nitride tubes, reduces internal defects, and provides higher bending strength, better thermal shock resistance, and longer service life.
Compared to conventional pressureless sintering, silicon nitride tubes produced by GPSN are more reliable under harsh operating conditions.
How should silicon nitride tubes be stored and handled to maintain their quality?
They can be stored in a dry, well-ventilated environment. GORGEOUS packaging ensures that the ceramic tubes are protected from damage during transportation and storage. Although silicon nitride is strong, the brittle material can still break under impact, so handle the ceramic tubes with care.
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