CG MATERIAL
Silicon Carbide Ceramic Tubes for Furnace, Thermocouple Protection and Semiconductor Applications
Silicon Carbide Ceramic Tubes for Furnace, Thermocouple Protection and Semiconductor Applications
Silicon Carbide (SiC) Tubes are high-performance ceramic tubes designed for extreme temperature, wear, and corrosion environments. Compared with quartz, alumina, and metallic tubes, SiC tubes provide superior thermal conductivity, excellent thermal shock resistance, and outstanding chemical stability.
CG Material supplies Recrystallized Silicon Carbide (RSiC), Sintered Silicon Carbide (SSiC), and Reaction Bonded Silicon Carbide (RBSiC) tubes for industrial furnaces, thermocouple protection, semiconductor processing, heat exchangers, and chemical processing equipment.
Silicon Carbide Tube Specifications
| Recrystallized SiC | Sintered SiC | Reaction Bonded SiC | |
| Purity of Silicon Carbide | 99.5% | 98% | > 88% |
| Max. Working Temp. (`C) | 1650 | 1550 | 1300 |
| Bulk Density (g/cm3) | 2.7 | 3.1 | > 3 |
| Appearance Porosity | < 15% | 2.5 | 0.1 |
| Flexural strength (MPa) | 110 | 400 | 380 |
| Compressive strength (MPa) | > 300 | 2200 | 2100 |
| Thermal expansion (10^-6/`C) | 4.6 (1200℃) | 4.0 (< 500℃) | 4.4 (< 500℃) |
| Thermal conductivity (W/m.K) | 35~36 | 110 | 65 |
| Main characteristics | High temp. High resistance. High purity |
Fracture Toughness | Chemical Resistance |
Custom Silicon Carbide Tubes Available
CG Material manufactures custom SiC tubes according to customer drawings and specifications.
Available options include:
- Closed-end tubes
- Open-end tubes
- Flanged tubes
- Thermocouple protection tubes
- Burner tubes
- Heat exchanger tubes
- Precision machined tubes
Silicon Carbide Tube Applications
Industrial Furnaces
Used as furnace tubes, radiant tubes, and heating element protection tubes in high-temperature furnaces.
Thermocouple Protection Tubes
Protect thermocouples from corrosive atmospheres and thermal shock.
Semiconductor Industry
Used in diffusion furnaces, wafer processing equipment, and high-temperature semiconductor manufacturing.
Heat Exchangers
Excellent thermal conductivity makes SiC tubes ideal for heat recovery systems.
Chemical Processing
Resistant to acids, alkalis, and corrosive gases used in chemical plants.
Kilns and Ceramic Manufacturing
Widely used in ceramic, glass, and refractory production lines.
Frequently Asked Questions
What is the maximum temperature of SiC tubes?
Depending on the grade, SiC tubes can operate up to 1650°C.
Which SiC tube material is best?
Sintered SiC offers the highest strength, while RSiC provides the best high-temperature stability.
Can you manufacture custom dimensions?
Yes. Custom diameters, wall thicknesses, and lengths are available.
Are SiC tubes resistant to acids and alkalis?
Yes. Silicon carbide exhibits excellent chemical resistance in most industrial environments.
What industries use SiC tubes?
Semiconductor, chemical processing, metallurgy, furnace manufacturing, ceramics, and energy industries.
