Silicon Carbide Ceramic Tube

Gorgeous silicon carbide tubes are made of high-quality SiC and are available in a variety of custom purities and sizes.

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High Quality SiC Tube

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With a Mohs hardness of 9, its high wear resistance extends its lifespan several times longer than metal pipes, significantly reducing the likelihood of replacements and downtime.
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Dual heat and corrosion resistance allows a single pipe to withstand extreme industrial environments (stable operation at high temperatures, capable of temporarily reaching 2000°C in an inert atmosphere).
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High thermal conductivity and low thermal expansion make it ideal for rapid heating or cooling applications.
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OEM customization is available, from small-batch trials to large-scale production (with a minimum order of one).

SiC Tube Description

GORGEOUS offers a variety of silicon carbide ceramic tubes, including sintered, reaction-bonded, and recrystallized silicon carbide tubes.

Reaction-bonded and sintered silicon carbide tubes offer superior mechanical strength and wear resistance, making them ideal for high-load and demanding applications. Recrystallized silicon carbide tubes, on the other hand, boast higher purity and high-temperature resistance, making them suitable for long-term, stable operation in extreme temperature environments.

 

Supply Various Shapes of Silicon Carbide Ceramic Tubes

Provide Customers with Customized Solutions According to Their Needs

Silicon carbide ceramic tube with both ends open
Silicon carbide protection tube closed at one end
Square-shaped SiC ceramic tube
Customizable SiC shaped ceramic tube
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Supply Silicon Carbide Tubes for Various Purposes

GORGEOUS can customize various types of silicon carbide tubes for customers, including: protection tubes, high-temperature furnace tubes, filter membrane tubes, etc.

Standard Silicon Carbide Tube

Standard silicon nitride tubes, accept customization, can be shipped quickly, send a request to get a quote.

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SiC Thermocouple Protection Tube

Single-ended closed protection tube, specially designed for thermocouple protection, can be customized. Send your request to get a quote.

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Silicon Carbide Furnace Tube

It can be used in high-temperature furnaces and is designed for high-temperature environments. Send us your request to get a quote.

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Silicon Carbide Membrane Tube

For filtration and separation processes, choose a custom process based on your needs. Send us an inquiry to get a quote.

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Advantages of Silicon Carbide Ceramic Tubes

Dureté élevée

Résistant à la corrosion

conductivité thermique élevée

Résistance aux hautes températures

Pressureless sintered Silicon Carbide

Ultrafine silicon carbide powder with a particle size of 0.5 to 1.0 µm is used as raw material, B4C-C is used as a sintering aid, the density of the extruded green body is optimized through solvent degreasing + two-step sintering process, and sintering is carried out under vacuum or argon protection.

Indicateurs de performance Condition unité Numeric
Silicon Carbide Content - % ≥98.3
Average Grain Size - μm 4-10
Densité - kg/dm³ 3.00-3.10
Porosité apparente - Vol% ≤0,5
Dureté Vickers - Kg/mm2 2100-2300
Three-Point Bending Strength 20℃ MPa 380-450
Three-Point Bending Strength 1300°C MPa 500-580
Résistance à la compression 20°C MPa 3800-4200
Module d'élasticité - moyenne générale 410-440
Résistance à la fracture 20°C MPa/m1/2 4.5-5.5
Conductivité thermique 20°C W/(m*K) 140-170
Conductivité thermique 1300℃ W/(m*K) 30-45
Résistivité volumique - Ω·cm 106 -108
Coefficient de dilatation thermique (RT*-1300°C) ×10-6 /K 4.5-5.2
Température maximale de fonctionnement Oxidizing atmosphere °C 1700
Résistance à la corrosion 50%NaOH,100°C,15d Mg/(cm2 ·y) 0.5-1.0
Résistance à la corrosion 10%HF:65%HNO3=1:1,25°C,30d Mg/(cm2 ·y) 0.001-0.005
Résistance à la corrosion 10%HF:65%HNO3=1:1,100°C,30d Mg/(cm2 ·y) 0.8-1.2

Ultrafine silicon carbide powder (0.5–1.0 µm) is used as raw material, B4C-C is added as sintering aid, and green embryos are prepared by gel injection molding process. Silicon carbide powder is evenly mixed with monomers, crosslinking agents, water, dispersants, defoamers, toughening agents, pH regulators, retarders and other additives to make slurry, and then a catalyst is added to initiate polymerization to form a three-dimensional polymer skeleton, so that the powder can be locked in situ, and finally two-step degreasing (solvent degreasing + thermal degreasing) is performed, and pressureless sintering is performed under vacuum/argon protection.

Indicateurs de performance Condition unité NumericSilicon Carbide Content
Silicon Carbide Content - % ≥98.0
Average Grain Size - μm 3-8
Densité - kg/dm³ 3.03-3.10
Porosité apparente - Vol% ≤0,8
Dureté Vickers - Kg/mm2 2100-2300
Three-Point Bending Strength 20℃ MPa 350-420
Three-Point Bending Strength 1300°C MPa 480-550
Résistance à la compression 20℃ MPa 3700-4100
Module d'élasticité - moyenne générale 380-420
Résistance à la fracture 20℃ MPa/m1/2 4.7-5.3
Conductivité thermique 20℃ W/(m*K) 150-170
Conductivité thermique 1300℃ W/(m*K) 30-45
Résistivité volumique - Ω·cm 106 -108
Coefficient de dilatation thermique (RT*-1300°C) ×10-6 /K 4.7-5.1
Température maximale de fonctionnement Oxidizing atmosphere °C 1750

Ultrafine silicon carbide powder is used as raw material, compounded with less than 15% graphite material, formed by dry pressing and isostatic pressing, and sintered under vacuum or argon protection.

Indicateurs de performance Condition unité Numeric
Silicon Carbide Content - % 80-90
Average Grain Size - μm 2.4-2.8
Densité - kg/dm³ 10000-1400
Porosité apparente - Vol% 8-15
Dureté Vickers - Kg/mm2 10000-1400
Three-Point Bending Strength 20°C MPa 250-350
Three-Point Bending Strength 1300°C MPa 300-400
Résistance à la compression 20℃ MPa 2000-2500
Module d'élasticité - moyenne générale 280-320
Résistance à la fracture 20°C MPa/m1/2 3.0-4.0
Conductivité thermique 20°C W/(m*K) 100-150
Conductivité thermique 1300°C W/(m*K) 50-80
Résistivité volumique - Ω·cm 5-200
Coefficient de dilatation thermique (RT*-1300°C) ×10-6 /K 4.0-5.0
Température maximale de fonctionnement Oxidizing atmosphere °C 1100-1300

Silicon carbide submicron powder is used as raw material, and oxide is used as auxiliary agent system. It is formed by dry pressing or cold isostatic pressing and then sintered in liquid phase at 1800–2000 °C.

Indicateurs de performance Condition unité Numeric
Silicon Carbide Content - % 92
Average Grain Size - μm 4-10
Densité - kg/dm³ 3.20-3.22
Porosité apparente - Vol% ＜0.8
Dureté Vickers - Kg/mm2 2200
Three-Point Bending Strength 20°C MPa 550
Résistance à la compression 20°C MPa 3900
Module d'élasticité - moyenne générale 400
Résistance à la fracture 20°C MPa/m1/2 5
Conductivité thermique 20°C W/(m*K) 20-30
Résistivité volumique - Ω·cm (1-3)*108
Coefficient de dilatation thermique (RT*-1300°C) ×10-6 /K 3.73-5.45
Température maximale de fonctionnement Oxidizing atmosphere °C 1700

Reaction-Sintered Silicon Carbide

Select extrusion grade silicon carbide powder of different particle sizes as raw materials, add carbon source, binder, emulsifier and other additives, mix, Knead, extrude, and then react and sinter. It is suitable for producing wires, pipes, plates, etc. with uniform cross-section and long sizes.

Indicateurs de performance Condition unité Numeric
Silicon Carbide Content - % ≥83
Densité - kg/dm³ ≥3.03
Porosité apparente - Vol% ≤0,3
Dureté Vickers - Kg/mm2 2300
Three-Point Bending Strength 20°C MPa 260
Three-Point Bending Strength 1300℃ MPa 282
Résistance à la compression 20℃ MPa 3500
Module d'élasticité - moyenne générale 360
Résistance à la fracture 20℃ MPa/m1/2 3.5
Conductivité thermique 20℃ W/(m*K) 100
Conductivité thermique 1200℃ W/(m*K) -
Résistivité volumique - Ω·cm ＜100
Coefficient de dilatation thermique (RT*-1300°C) ×10-6 /K 4.2
Température maximale de fonctionnement Oxidizing atmosphere °C 1350

Silicon carbide powder of different particle sizes is selected as raw material, organic carbon source and inorganic carbon source are introduced, and dispersed ball milling is carried out with deionized water, dispersant, binder, etc. The prepared silicon carbide slurry is injected into the designed gypsum mold and siliconized in a vacuum atmosphere at 1600–1700 °C. The free silicon content of the product is less than 15%.

Indicateurs de performance Condition unité Numeric
Silicon Carbide Content - % ≥85
Densité - kg/dm³ ＞3.05
Porosité apparente - Vol% ≤0,5
Dureté Vickers - Kg/mm2 2572
Three-Point Bending Strength 20°C MPa 290
Résistance à la compression 20℃ MPa 2322
Module d'élasticité - moyenne générale 350
Résistance à la fracture 20℃ MPa/m1/2 3.7
Conductivité thermique 20℃ W/(m*K) 100
Conductivité thermique 1200℃ W/(m*K) 33.5
Résistivité volumique - Ω·cm ＜100
Coefficient de dilatation thermique (RT*-1300°C) ×10-6 /K 4.6
Température maximale de fonctionnement Oxidizing atmosphere °C 1350

Silicon carbide powders of different particle sizes are used as raw materials, different activated carbon sources are added as the second phase, and then dispersants, binders, pressure aids, etc., are added to make high-solid-phase slurry, which is molded and sintered by high-temperature reaction siliconization in a vacuum atmosphere. The free silicon content is 15–20%.

Indicateurs de performance Condition unité Numeric
Silicon Carbide Content - % ≥85
Densité - kg/dm3 ＞3.05
Porosité apparente - Vol% ≤0,3
Dureté Vickers - Kg/mm2 2500
Three-Point Bending Strength 20°C MPa 260
Résistance à la compression 20°C MPa 3500
Module d'élasticité - moyenne générale 360
Résistance à la fracture 20°C MPa/m1/2 3.5
Conductivité thermique 20°C W/(m*K) 200
Résistivité volumique - Ω·cm ＜100
Coefficient de dilatation thermique (RT*-1300°C) ×10-6/K 3.14-4.66
Température maximale de fonctionnement Oxidizing atmosphere °C 1350

Silicon carbide powders of different particle sizes are used as raw materials, and are directly added to the premixed liquid formed by monomers, crosslinking agents, water, dispersants, defoamers, toughening agents, pH regulators, retarders and other additives with carbon sources, and catalyzed by catalysts and initiators. The monomer crosslinker will solidify to form a three-dimensional network structure and lock the ceramic powder in the gel network. The material made by this process has extremely high bending strength and fracture toughness.

Performance indicators Condition unité Numeric
Silicon Carbide Content - % ≥85
Densité - kg/dm3 ＞3.05-3.10
Porosité apparente - Vol% ≤0,3
Dureté Vickers - Kg/mm2 2200-2500
Three-Point Bending Strength 20°C MPa 400-450
Résistance à la compression 20°C MPa 3000-3500
Module d'élasticité - moyenne générale 380-420
Résistance à la fracture 20°C MPa/m1/2 3.5-4.5
Conductivité thermique 20°C W/(m*K) 120-180
Résistivité volumique - Ω·cm ＜100
Température maximale de fonctionnement Oxidizing atmosphere °C 1350

3D Printing Silicon Carbide Ceramics

Silicon carbide powder with different particle sizes is used as raw material, and is formed using a binder injection process. It is sintered at high temperature under vacuum or argon protection. The free silicon content is usually 10–30%.

Indicateurs de performance Condition unité Numeric
Silicon Carbide Content - % ≥75
F.Si - % 10-25
Densité - kg/dm3 2.90-3.05
Porosité apparente - Vol% ≤1,0
Dureté Vickers - Kg/mm2 1800-2200
Three-Point Bending strength 20°C MPa 200-300
Module d'élasticité - moyenne générale 280-320
Résistance à la fracture 20°C MPa/m1/2 3.5-4.5
Conductivité thermique 20°C W/(m*K) 120-150
Conductivité thermique 1300°C W/(m*K) 25-35
Résistivité volumique - Ω·cm 100
Coefficient de dilatation thermique (RT*-1300°C) ×10-6 /K 4.0-4.8
Température maximale de fonctionnement Oxidizing atmosphere °C 1350

Silicon carbide powders of different particle sizes (50–100 µm) are used as raw materials, and the raw materials are modified and formed by binder injection process, special reinforcement process, reaction sintering under vacuum or argon protection, and the free silicon content is less than 15%.

Indicateurs de performance condition unité Numeric
Silicon Carbide Content - % ≥85%
F.Si - % <15%
Densité - kg/dm3 3.00-3.12
Porosité apparente - Vol% ≤0,3
Dureté Vickers - Kg/mm2 2400-2700
Three-Point Bending Strength 20°C MPa 300-400
Module d'élasticité - moyenne générale 330
Résistance à la fracture 20°C MPa/m1/2 3.84
Conductivité thermique 20°C W/(m*K) 140-170
Conductivité thermique 1300°C W/(m*K) 30-40
Résistivité volumique - Ω·cm 100
Coefficient de dilatation thermique (RT*-1300°C) ×10-6/K 3.14-4.56
Température maximale de fonctionnement Oxidizing atmosphere °C 1350

Silicon Carbide Tube Use

Pyrometallurgy & Metal Processing

Silicon carbide ceramic tubes can operate stably at high temperatures of 1400–1700°C for extended periods. As thermocouple protection tubes, they offer high thermal conductivity and fast temperature response, enabling more accurate temperature measurement. As furnace tubes, their corrosion resistance allows them to withstand the erosion of molten metal, slag, and chemical atmospheres.
Commonly used in:Thermocouple protection tubes, solution transmission tubes, furnace components

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Chemical and Corrosive Media Transportation

Silicon carbide tubes have excellent chemical inertness to almost all inorganic acids and alkalis, and will not peel or be contaminated due to long-term exposure to corrosive media.
Commonly used in:Corrosion-resistant pipes, reactor liners, high-pressure corrosive medium protection pipes

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Semiconductor & Solar Industry

High-purity silicon carbide material can prevent metal contamination of silicon wafers, and silicon carbide has strong thermal shock resistance and can withstand rapid temperature cycles.
Commonly used in:Wafer heat treatment furnace tubes, photovoltaic industry heating tubes and support tubes.

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Environment and Energy

Silicon carbide tubes can withstand long-term exposure to oxidizing, reducing, and mixed atmospheres, maintaining strength and structural stability in these extreme conditions. They are also used for transporting hazardous waste gases and liquids for high-temperature incineration.
Commonly used in:Incinerator tube、nuclear fuel cladding tube.

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Mechanical and Wear Parts

Silicon carbide has a Mohs hardness of nearly 9, making it second only to diamond in wear resistance. It can be used as a highly wear-resistant mechanical component, capable of long-term operation even in high-velocity fluids containing sand and solid particles. Common applications include various pump shafts and mechanical seals.
Commonly used in:Wear-resistant tube, wear-resistant linings, guide tube.

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Special minimum order quantity (MOQ) of one piece is available to meet customers with smaller needs. Take the first step and experience our services.

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Why Choose GORGEOUS?

GORGEOUS focuses on quality control to ensure that every alumina tube product meets customer requirements. Our quality inspection process is strict and meticulous. From raw materials to ceramic products, every step of the process is precisely inspected and tested.

In addition, GORGEOUS is a factory that has passed IATF16949:2016 automotive industry quality management system certification ISO9001:2015 quality management certification, which can provide customers with the best customized services.

Nos réussites en matière de passeports Témoignages

We have worked with GORGEOUS more than once and the quality of the ceramic products they provide is excellent.

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James Walker

Technical Director

GORGEOUS's custom-made ceramic tubes are a perfect fit for our experimental setup.

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Michael Anderson

Engineer

GORGEOUS is a reliable supplier of ceramic components. Our custom-made ceramic tubes were delivered on time, met all technical specifications, and integrated seamlessly into our components.

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Product Manager

FAQ

What are the main benefits of using silicon carbide tubes?

GORGEOUS silicon carbide is inert to a wide range of corrosive chemicals, including strong acids and bases, and is temperature-resistant up to 200°C.
Silicon carbide tubing can replace most materials, such as graphite, metals, and alloys, which can introduce contamination over time due to corrosion. Other key advantages include high heat transfer, excellent mechanical strength, and low thermal expansion.

Types of SiC Tubes？

There are mainly reaction bonded SiC tubes, sintered SiC tubes, recrystallized SiC tubes, etc.

What are the advantages of SiC tubes?

Silicon carbide tubes have extremely high hardness (equivalent to diamond grade), excellent thermal shock resistance and thermal stability, strong chemical corrosion resistance, low thermal expansion coefficient, high heating/cooling efficiency, longer life, and low maintenance costs.

How to Choose the Right Type?

If you are looking for extreme corrosion resistance, then recrystallized SiC is recommended; if you want high mechanical strength, then sintered SiC is optional; if you need cost-effectiveness, you can consider reaction-bonded SiC.