Alumina Ceramic Tube
Premium 99.5% High-Purity Alumina Ceramic Tube – Engineered with superior thermal stability, exceptional chemical inertness, and structural strength for ultra-high-temperature sintering up to 1750C.
This premium alumina ceramic tube is manufactured from recrystallized high-purity alumina 99.5%, offering exceptional resistance to thermal shock, slag erosion, and aggressive chemical attack. With an outstanding maximum operating temperature of 1750C, and a maximum rated positive internal gas pressure of 0.02mpa, it is the definitive process tube for extreme-temperature vacuum sintering, reduction, and pyrolysis setups.
Available in a comprehensive range of outer diameters 50mm to 100mm and standard lengths up to 1300mm, it interfaces seamlessly with high-vacuum water-cooled stainless steel sealing flanges to ensure a clean, contamination-free hot zone in UK research and industrial laboratories.
Exclusive UK Distributor: Benli Lab – Direct from Hefei Weiyuansu with full local technical support.
Premium Alumina Ceramic Tube – 99.5% High-Purity & Extreme-Temperature Series
Benli Lab is the Exclusive UK Distributor of Hefei Weiyuansu Laboratory Equipment. We supply premium-grade furnace accessories to leading academic and industrial laboratories across the United Kingdom. This series of recrystallized alumina ceramic tubes is manufactured using advanced cold isostatic pressing (CIP) and high-temperature sintering, ensuring an exceptionally dense, gas-tight body. Labeled with an ultra-low iron oxide (Fe2O3 < 0.01%) profile, these tubes prevent trace metal contamination during sensitive firing cycles. Their superb mechanical strength and low thermal expansion coefficient make them the ideal choice for demanding high-vacuum thermal treatments, protective atmosphere annealing, and co-firing reactions up to 1750C.
Key Features & Benefits
- Ultra-High Chemical Purity – Composed of ≥ 99.5% recrystallized alumina (Al2O3) with iron oxide impurities strictly controlled below 0.01%. This eliminates volatile outgassing and prevents contamination of substrates, advanced battery powders, or semiconductor films.
- Extreme Temperature Limits – Capable of operating continuously at temperatures up to $1700^\circ\text{C}$ and sustaining short-term peaks up to 1750C. Ideal for high-end 1600C and 1700C muffle and tube furnaces.
- Outstanding Slag & Acid Resistance – Highly inert to neutral and acidic slags, fluxes, and aggressive gases. Ideal for metallurgical processing, chemical synthesis, and solid-state battery powder calcining.
- Excellent Mechanical Integrity – Displays high compressive and bending strength at high temperatures. Smooth, precision-ground outer surfaces ensure a hermetic, leak-free seal when coupled with standard O-ring vacuum flanges.
Technical Specifications
Alumina Ceramic Physical & Chemical Properties
Iron Oxide (Fe2O3) Content: < 0.01%
Maximum Working Temperature (Short-Term): 1750C
Continuous Safe Operating Temperature: 1700C
Bulk Density: >3.8g/m³
Rated Internal Gas Pressure: 0.02mpa
Recommended heating and cooling rates:500℃ ≤5℃/min;500-800℃≤10℃/min;800-1000℃≤5℃/min;1000-1400℃≤3℃/min;1400-1600℃≤2℃/min
Standard Dimensional Configurations
Standard Outer Diameters (OD) & Lengths:
Φ50*700mm
Φ60*800mm
Φ60*850mm
Φ60*1000mm
Φ60*1200mm
Φ80*850mm
Φ80*1000mm
Φ80*1200mm
Φ100*1200mm
Φ100*1000mm
Φ50*1000mm
φ60*1300mm
φ50*800mm
* Custom lengths, slotted tubes, thermocouple protection tubes, multi-bore tubes, and custom diameters are fully available upon request. For ordering and pricing on non-standard specifications, please contact our customer sales team.
Applications
Perfect for ultra-high-temperature tube furnaces operating under vacuum or controlled atmosphere conditions. Widely used for technical ceramics sintering, high-temperature calcination of battery materials, vacuum metallurgical processing, aerospace material thermal testing, and chemical synthesis.
Why Choose Benli Lab? Direct factory access ensures genuine equipment, best pricing, customisation options, and dedicated UK-based technical support, installation guidance, and after-sales service.
Benli Lab – Empowering UK Research with Innovative High-Temperature Laboratory Solutions
| Model | ACT |
|---|---|
| Dimensions (mm) | Φ50*700mm,Φ60*800mm,Φ60*850mm,Φ60*1000mm,Φ60*1200mm,Φ80*850mm,Φ80*1000mm,Φ80*1200mm,Φ100*1200mm,Φ100*1000mm,Φ50*1000mm,φ60*1300mm,φ50*800mm |
| Customisation Available | No |
| Tube Material | alumina |
| Tube Diameter | 50mm, 60mm, 80mm, 100mm |