Product Specification

Customizable KY-Grown Sapphire Tubes High Hardness, Polished, Superior Thermal & Mechanical Properties

Product Overview:

Our KY-grown sapphire tubes are engineered for the most demanding applications, offering unparalleled optical clarity, purity, and resistance to extreme environments. Manufactured using the Kyropoulos (KY) growth method, these single-crystal tubes provide exceptional mechanical strength, high thermal stability, and outstanding chemical inertness. They are the perfect solution for industries such as semiconductor processing, laser systems, and high-temperature industrial operations.

Parameters & Specifications:

Key Features:

1. Crystalline Perfection
   Our KY-grown sapphire tubes are made from ultra-pure α-Al₂O₃ with a crystal structure that ensures exceptional optical quality. The C-axis orientation is precisely controlled, ensuring maximum strength and clarity.

2. Superior Mechanical Strength
   With a Mohs hardness of 9, these sapphire tubes are second only to diamond in hardness, offering unmatched durability and resistance to wear and scratches. They also exhibit high compressive strength (>2 GPa) and flexural strength (600-800 MPa), making them ideal for applications requiring high mechanical performance.

3. Thermal Performance
   These sapphire tubes boast excellent thermal properties, including high thermal conductivity (35 W/m·K at 25°C), which is six times higher than quartz. They also withstand extreme temperatures from -200°C to 1,800°C and offer outstanding thermal shock resistance, surviving temperature changes of over 500°C.

4. Optical Clarity
   The polished surface finish, with a roughness (Ra) of less than 0.02μm, ensures minimal optical distortion, making these tubes ideal for high-precision optical applications. Their broadband transmission (greater than 80% for the visible spectrum) makes them suitable for use in lasers and optical systems.

5. Chemical Inertness
   Sapphire's excellent chemical resistance allows the tubes to endure harsh environments, including exposure to strong acids and alkalis. This makes them ideal for use in semiconductor processing and chemical reactors where materials must resist corrosion.

6. Customizable Sizes and Tolerances
   The sapphire tubes are available in a wide range of diameters, from 5mm to 100mm, with wall thicknesses customizable from 0.5mm to 20mm. The precision manufacturing ensures ID/OD tolerances of ±0.01mm, allowing for precise fits in sensitive applications.

Applications of KY-Grown Sapphire Tubes:

1. Advanced Laser Systems:

   • Laser Gain Media Tubes for excimer, CO₂, and fiber lasers requiring low optical loss.

   • Beam Delivery Components providing resistance to high power densities.

   • Nonlinear Optics for UV generation.

2. Semiconductor Manufacturing:

   • CVD Reactor Components for SiC and GaN epitaxial growth systems.

   • Plasma Etch Shields protecting components from erosion in dielectric etchers.

   • Ion Implantation beamline components ensuring minimal particle generation.

3. High-Temperature Industrial Applications:

   • Thermal Process Tubes for sapphire crystal growth furnaces.

   • Molten Metal Handling for thermocouple protection in aluminum and superalloy processing.

   • Combustion Analysis flame tubes for turbine engine test stands.

4. Scientific Instrumentation:

   • Synchrotron Beamlines X-ray windows and monochromators.

   • Cryogenic Systems low-temperature sample holders for scientific research.

   • High-Pressure Cells for research in extreme conditions.

5. Medical Technology:

   • Surgical Laser Delivery Systems for endoscopic components.

   • MRI-Compatible Sensor Housings offering durability and transparency.

   • Dental Handpieces for sterilizable applications.

FAQ:

Q1: What are the advantages of KY-grown sapphire tubes over EFG-grown sapphire tubes?
A: KY-grown sapphire tubes are known for their superior optical quality and purity. They offer a higher degree of precision and fewer defects compared to EFG-grown tubes. However, KY-grown tubes have length constraints (typically up to 500mm) and may require additional polishing to remove growth striations, which are less prominent in EFG-grown tubes.

Q2: What is the recommended packaging for KY-grown sapphire tubes?
A: To ensure safe transit, we provide aerospace-grade packaging:

• Primary Packaging: Class 100 cleanroom vacuum-sealed bags to prevent contamination.

• Secondary Packaging: Custom foam-insulated transit cases to protect the tubes from mechanical damage during transport.

Related Products:

Unpolished Sapphire Tubes​ KY Method Rough Blanks Custom Sizes