Product Description
Engineered to withstand extreme thermal and corrosive environments, our high-performance ceramic tubes provide exceptional dimensional stability, high mechanical strength, and superior thermal shock resistance. Manufactured from high-purity Alumina (Al2O3 up to 99.7%) and Silicon Carbide (SiC), these tubes are designed for long service life in critical high-temperature operations, protecting thermocouples, heating elements, and furnace atmospheres.
Key Features & Benefits
- Exceptional Thermal Resistance: Capable of continuous operation at temperatures up to 1700°C (Alumina) and 1350°C – 1650°C (Silicon Carbide).
- High Resistance to Thermal Shock & Corrosion: Maintains structural integrity under severe temperature fluctuations and resists chemical attack from molten metal, slag, and acidic atmospheres.
- Superior Electrical Insulation: High dielectric strength at elevated temperatures makes them ideal for thermocouple protection sheaths and high-voltage insulation.
- Low Thermal Expansion: Minimal creep and distortion ensure consistent performance and extended service life, reducing downtime and replacement frequency.
- Customizable Sizes & Geometry: Available in single-bore, multi-bore, closed-one-end, or open-both-ends configurations with strict outer/inner diameter tolerances.
Technical Specifications
Property | High-Purity Alumina Tube (99.7% Al2O3) | Silicon Carbide Tube (RSiC / SiSiC) |
Max Working Temp | 1700°C | 1350°C – 1650°C |
Density | ≥ 3.90 g/cm³ | 2.70 – 3.10 g/cm³ |
Bending Strength | ≥ 330 MPa | ≥ 250 MPa |
Thermal Conductivity | 25 – 30 W/m·K | 45 – 110 W/m·K |
Water Absorption | 0% (Gas tight) | < 0.1% |
Typical Applications
- Thermocouple protection sheaths in metallurgy and glass manufacturing.
- High-temperature laboratory tube furnaces and industrial kilns.
- Radiant burner tubes and diffusion tubes for semiconductor processing.
- Support rods and structural components in thermal treatment units.
