Product Name:
Industrial Alumina Ceramic Tube (Corundum Tube)
Product Material:
95% - 99.8% High-Purity Alumina ($Al_2O_3$), optional Ceramic-to-Metal transition components
Material Characteristics:
High temperature resistance (up to 1750°C), Exceptional hardness and wear resistance, Superior electrical insulation at elevated temperatures, Excellent chemical stability against acids and alkalis, High compressive strength, Gas-tight and zero porosity (for 99% + grades)
Application Fields:
High-temperature vacuum furnace tubes, Thermocouple protection sleeves, Electrical insulation bushings, Corona discharge tubes, Laser tubes, Catalyst supports, Wear-resistant liners for pneumatic conveying, Kiln rollers
Application Industries:
Biomedical (Laboratory furnace components), Advanced Machinery (Heavy-duty ceramic liners), New Energy (Lithium battery powder calcination), Fluid Control (Corrosive gas delivery), Electronic Engineering (Insulating substrates), Aerospace (Engine sensor protection), Petrochemical (Heat exchanger tubes), Broad Semiconductor (MOCVD/CVD furnace tubes)
Processing Difficulties:
Controlling the straightness and ovality of long-dimension tubes during high-temperature sintering, Preventing brittle cracking during precision diamond grinding of thin-wall tubes, Achieving uniform wall thickness for high-voltage insulation stability, Managing surface micro-stress for vacuum-tight applications
Processing Flow:
Raw material preparation → Extrusion, Slip casting, or Isostatic pressing → Drying and green body machining → High-temperature sintering (1600°C - 1800°C) → Diamond precision grinding (OD/ID) → Cutting to length → Ultrasonic cleaning → Air-tightness/insulation testing → Packaging
Delivery Period:
Standard inventory sizes: 7-15 days, Customized high-precision or extra-large tubes: 25-40 days
The Alumina Ceramic Tube is the foundational component for modern high-temperature and high-wear industrial processes. Known for its versatile performance, our alumina tubes provide a stable and inert environment for chemical reactions and thermal processing. With purity levels up to 99.8%, these tubes exhibit minimal contamination risks, making them ideal for semiconductor and laboratory applications. Whether used as a protective sleeve for sensors in a furnace or a wear-resistant conduit for abrasive minerals, our alumina tubes offer a cost-effective, durable solution that significantly outlasts metal and quartz alternatives.
Key Features
Exceptional Thermal Stability: Maintains mechanical strength and shape under continuous high-temperature operation.
Superior Dielectric Properties: Ideal for high-voltage and high-frequency insulation across a wide temperature range.
High Wear & Erosion Resistance: Protects internal systems from abrasive particles and high-speed fluid flows.
Versatile Chemical Resistance: Withstands most industrial chemicals, reducing corrosion-related failures.
Precision Tolerances: Available with precision-ground surfaces to ensure a perfect fit in complex assemblies.
