High-Performance Alumina Tube Solutions
- Withstands continuous use up to 1,800℃.
- Has a Mohs hardness rating of 9 for less wear on your equipment.
- High thermal conductivity up to 33 W/m•K eliminates localized overheating in electronic devices.
- Low density at 3.9 g/cm3reduces structural stress while maintaining high mechanical strength.
- Provides good insulation properties with high dielectric strength >10 KV/mm.
- Resists acid and alkali corrosion.
Alumina Ceramic Tube for Industries With Harsh Conditions
Newthink offers a comprehensive range of specialized alumina tube solutions tailored for extreme environments.
The industry standard for precision mechanical parts. Exceptional hardness and 1650℃ thermal resistance.
Cost-effective, high-performance. Providing excellent insulation and durability for industrial wear applications.
Ultra-high purity. 1,800℃ temperature limits with maximum corrosion resistance for semiconductor etching.
Thick-walled precision parts. Protect shafts with high-accuracy internal diameters and superior wear resistance.
Mirror-like surface finishes. Minimize friction and prevent material adhesion in high-speed machinery.
Specialized lightweight tubes with wall thicknesses as low as 0.18mm, perfect for aerospace sensors.
High-strength ceramic tubes with precision-machined threads. Non-magnetic and corrosion-proof.
Micro-holes (φ0.2mm) for precise chemical filtration and high-temperature gas diffusion.
Features and Applications of Alumina Tube
Alumina tubes designed to replace traditional metal or plastic ones provide the precision and durability required for your most demanding applications.
Alumina tubes maintain structure at continuous 1,800℃ operating temperatures.
With a 9 Mohs hardness, alumina tubes significantly outperform steel ones.
High volume resistivity >10¹⁴ Ω·cm ensures reliable performance.
Highly resistant to acids, alkalis, and plasma. Long service life.
Excellent heat dissipation up to 33 W/m·K, manage thermal loads efficiently.
Near-zero water absorption and high gas-tightness. Maintain high-vacuum environments.
Low density of 3.7-3.95 g/cm3 allows for lightweight designs without losing strength.
Straightness achieves 0.003mm and Ra 0.03μm, meeting strict dimensional tolerances.
Why Choose Newthink Alumina Tube?
Newthink provides comprehensive solutions. We ensure your alumina tubes will be delivered precisely and reliably.
Newthink has over 14 years of expertise in the ceramic domain. We offer affordable pricing for large volume orders while meeting your requirements. Newthink offers customized solutions that help you save costs and make your production more efficient.
Newthink specializes in manufacturing alumina tubes tailored to your parameters, including resistance values, dimensions, and geometries. Our advanced processing achieves machining straightness of 0.003mm and surface roughness as low as Ra 0.03μm.
Newthink guarantees the quality through the control system and ISO international management standards. Our professional inspection team conducts strict testing on every product, checking for cracks, pores, and dimensional accuracy before packaging.
To avoid the risk of breakage during transportation, we make use of the best quality shock-proof packaging solutions. Components are separated from each other using foam materials, while larger tubes are fixed inside plywood or wood crates.
Newthink Alumina Tube Production Workshop
Newthink has 14 years of advanced ceramic expertise. We ensure every product meets your exact dimensional requirements. Our workshop is equipped with the newest processing tools with high-precision measuring systems. The processing straightness can achieve 0.003mm. Such an organized production environment is designed to eliminate cracks and inconsistencies between different batches. In this way, we will provide you with the high-purity, stable supply needed to keep your projects successful.
Secure Packaging Solutions for Fragile Alumina Tube
Each alumina tube is surrounded by shock-resistant packaging tailored to its dimensions. In this way, it can eliminate the risk of damage during transportation.
Customized foam and vacuum-sealed plastic are employed for small, high-precision parts to prevent scratches.
For larger industrial alumina tubes, we use reinforced plywood or solid wood crates with internal cushioning, ensuring your ceramic investments arrive in perfect condition and ready for immediate deployment.
High-Temperature Stable Alumina Tube for Extreme Environment
Structural components often face failure because of extremely high heat. Alumina tubes can ensure stable and consistent performance in 1,800℃ demanding furnace and kiln applications. Their excellent thermal resistance prevents deformation and cracking, allowing your equipment to run longer without frequent downtimes. You can maintain precise thermal control while extending the service life of your high-temperature machinery.
Alumina Tube with Superior Electrical Insulation & Corrosion Resistance
Alumina tube has a superior dielectric strength along with a higher volume resistivity. Its high vacuum integrity is extremely crucial for semiconductor manufacturing because of the resistance to electrical breakdowns.
Moreover, alumina tubes’ inert properties make them resistant to acids, alkalis, and plasma etching processes. Alumina tubes can be used for applications where higher protection from electrical interference is required. They adhere to stringent requirements for high-end industries.
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Meet Us at Exhibitions and Factory Visits
Newthink actively participates in major industrial and advanced ceramics exhibitions worldwide throughout the year, such as Italy, Germany, Japan and Vietnam, meeting directly with our customers.
We welcome you visit our factory to witness our control of quality and discuss our future cooperation. Through frequent interactions at global events and visits, we’ve earned deep trust from clients in 40+ countries and regions.
Technical Specifications and Performance Data of Alumina Tubes
This table provides an overview for the properties of Alumina Tube, assisting you in selecting the optimal material for high-performance applications.
- Properties
| Category | Property | Unit | Typical Value (99% as example) |
| Physical & Composition | Alumina Content (Al2O3) | % | 95 / 99 / 99.5 / 99.7 / 99.8 |
| Color | – | White / Ivory | |
| Bulk Density | g/cm3 | 3.85 | |
| Water Absorption | % | 0 | |
| Apparent Porosity | % | 0 | |
| Mechanical Properties | Mohs Hardness | Mohs | 9 |
| Vickers Hardness (Hv) | GPa | 15.0–18.0 | |
| Flexural Strength | MPa | 350–380 | |
| Compressive Strength | MPa | 2,450–2,600 | |
| Fracture Toughness (KIC) | MPa·m1/2 | 4–5 | |
| Elastic Modulus | GPa | 350–360 | |
| Thermal Properties | Max Operating Temperature | ℃ | 1,650–1,750 |
| Thermal Conductivity (20℃) | W/(m·K) | 27.5–30 | |
| Thermal Expansion Coeff. | 10-6/℃ | 7.6–8.2 | |
| Thermal Shock Resistance (△T) | ℃ | 200 | |
| Electrical Properties | Volume Resistivity (20℃) | Ω· cm | >1014 |
| Dielectric Strength | KV/mm | >10 | |
| Dielectric Constant (1MHz) | – | 9.1–9.7 | |
| Dielectric Loss (1MHz) | – | 0.0002–0.0004 | |
| Chemical Properties | Corrosion Resistance | – | Excellent |
| Plasma Resistance | – | Excellent (99%+) |
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For 99.7% high purity alumina tubes, the continuous operation temperature achieves 1,800℃.
For 99% alumina tubes, the continuous safe operation temperature is 1,650℃.
Alumina tubes offer excellent thermal stability, a critical requirement in a furnace environment.
Yes. Alumina is highly resistant to most strong acids, alkalis, and plasma etching. This makes it suitable for wafer processing equipment and chemical reaction.
95% Alumina tube is suitable for general industries with low-temperature requirements below 1500℃.
99% Alumina tube is suitable for high-end semiconductor manufacturing and aerospace applications with high hardness, corrosion resistance, and operating temperatures up to 1650℃.
Absolutely. With advanced precision machining, our alumina tubes can achieve straightness tolerances of 0.003mm,surface roughness as low as Ra 0.03μm. We support customized dimensions, wall thicknesses, and add threaded features.
Complex custom orders depend on specifications. Small or standard custom orders can often be delivered within 15 days. Our large-scale production and efficient supply chain management ensure stable lead times.
We utilize superior standard and shock-resistant packing materials that fit the size and type of the product. This includes foam inserts that fit the product, vacuum packing for smaller items, and wooden crates for the tubes to ensure safe arrival in pristine condition.
