Our KY-grown sapphire tubes are produced using the Kyropoulos (KY) growth method, which ensures superior optical quality and exceptional material properties. These tubes are made from high-purity single-crystal α-Al₂O₃, providing excellent mechanical strength, thermal stability, and chemical resistance. KY-grown sapphire tubes are designed for the most demanding applications across semiconductor processing, laser systems, high-temperature industries, and scientific research.
These tubes are available in a wide range of customizable sizes and wall thicknesses to meet the exact requirements of your application, offering outstanding performance in industries where precision and reliability are paramount.
| Property | Specification |
|---|---|
| Material | >99.99% pure α-Al₂O₃ (single crystal) |
| Growth Method | Kyropoulos (KY) |
| Orientation | C-Plane <0001> |
| Hardness (Mohs) | 9 (second only to diamond) |
| Thermal Conductivity | 35 W/m·K at 25°C (6× higher than quartz) |
| Thermal Shock Resistance | Withstands ΔT >500°C (water quench test per ASTM C1525) |
| Compressive Strength | >2 GPa |
| Flexural Strength | 600-800 MPa (3-point bend, ASTM C1161) |
| Young’s Modulus | 400 GPa |
| Transmission | >80% light transmittance (400-700nm) |
| Birefringence | <5 nm/cm (compensated for laser applications) |
| Dimensional Tolerance | ID/OD ±0.01mm |
| Size Range | Customizable from 5mm to 100mm (diameter); Length up to 500mm |
| Surface Finish | Polished (Ra < 0.02μm) |
Exceptional Optical Quality
The Kyropoulos growth method ensures high optical purity with minimal internal defects, making these tubes ideal for applications where optical clarity is critical. With over 80% light transmittance and low birefringence, they are perfect for laser systems and high-precision optical applications.
Superior Mechanical Strength
With a Mohs hardness of 9, these sapphire tubes offer outstanding wear resistance and scratch resistance. They also feature high compressive and flexural strength, providing durability and reliability in harsh environments.
Excellent Thermal & Chemical Performance
Sapphire is known for its excellent thermal stability (withstanding temperatures from -200°C to 1,800°C) and thermal shock resistance (ΔT >500°C). The tubes also offer superior chemical inertness, resisting corrosion from strong acids, alkalis, and plasma, making them ideal for semiconductor and chemical processing environments.
Customizable Sizes for Precision Applications
Available in a wide range of diameters (from 5mm to 100mm) and customizable wall thicknesses (0.5mm to 20mm), KY-grown sapphire tubes can be manufactured to meet your exact specifications. The ID/OD tolerance of ±0.01mm ensures high precision for critical applications.
Polished Surface Finish
These tubes come with an ultra-smooth polished finish (Ra <0.02μm), which is essential for high-precision optical applications, including laser systems, where surface smoothness plays a crucial role in performance.
Semiconductor Manufacturing:
CVD Reactor Components: Sapphire tubes serve as liners for SiC and GaN epitaxial growth systems, ensuring smooth processing and reducing material degradation.
Plasma Etching Shields: These tubes are used in plasma etching chambers to resist erosion and corrosion, extending the life of equipment.
Ion Implantation: They are used in beamline components, where minimal particle generation and chemical inertness are critical.
Laser Systems:
Laser Gain Media Tubes: KY-grown sapphire tubes offer low optical loss, making them ideal for excimer, CO₂, and fiber lasers.
Beam Delivery Components: These tubes provide exceptional resistance to high-power densities and offer precise beam guidance in laser systems.
High-Temperature Industrial Applications:
Thermal Process Tubes: Sapphire tubes are used in crystal growth furnaces, capable of withstanding temperatures up to 2,100°C, making them essential for high-temperature processes.
Molten Metal Handling: Sapphire tubes provide protection for thermocouples in aluminum and superalloy processing environments.
Combustion Analysis: Their thermal shock resistance makes them ideal for use in flame tubes and turbine engine test stands.
Scientific Instrumentation:
Synchrotron Beamlines: Used in X-ray windows and monochromators, KY-grown sapphire tubes provide high transparency and radiation resistance.
Cryogenic Systems: Suitable for low-temperature research applications (down to 4K), these tubes are ideal for cryogenic sample holders.
High-Pressure Cells: Sapphire tubes are used as components in diamond anvil cells for research at pressures above 100 GPa.
Medical Technology:
Surgical Laser Delivery Systems: Sapphire tubes are used in endoscopic laser applications, offering high resistance to sterilization and wear.
MRI-Compatible Sensor Housings: With mechanical strength and transparency, sapphire tubes are ideal for use in MRI and other medical equipment.
Dental Handpieces: Sapphire tubes offer resilience and long lifespan in dental tools, even under harsh sterilization conditions.
Q1: Why should I choose KY-grown sapphire tubes over other materials?
A: KY-grown sapphire tubes offer superior optical clarity, thermal stability, and chemical resistance compared to other materials such as quartz and polycrystalline alumina. Their high hardness and thermal shock resistance make them ideal for demanding applications where precision and durability are critical.
Q2: What are the recommended packaging options for KY-grown sapphire tubes?
A: To ensure the safe transport of KY-grown sapphire tubes:
Primary Packaging: Class 100 cleanroom vacuum-sealed bags to maintain purity and prevent contamination.
Secondary Packaging: Custom foam-insulated cases to protect the tubes from mechanical damage during shipping.
