Kyropoulos-Grown Sapphire Tube 2–400mm OD for High Temperature Optical and Industrial Applications

ZMSH Kyropoulos-Grown Sapphire Tubes are precision-engineered cylindrical components grown using the Kyropoulos method. Made from high-purity single crystal Al₂O₃, these tubes exhibit outstanding hardness, thermal conductivity, and optical transparency.

Our sapphire tubes are widely used in semiconductor, aerospace, optical, and chemical industries, especially in high-temperature, high-pressure, and corrosive environments where standard materials such as quartz or alumina may fail.

The Kyropoulos method allows continuous production of custom sapphire geometries—including tubes, rods, and sleeves—with excellent dimensional accuracy, making them ideal for thermocouple protection, laser systems, and optical inspection devices.

• High Temperature Resistance: Stable operation up to 1900 °C without deformation or degradation.
• Exceptional Hardness: Mohs 9, second only to diamond, providing excellent wear resistance.
• Optical Transparency: High transmittance from 190 nm to 5000 nm (UV-IR range).
• Corrosion Resistance: Chemically inert and 100% gas-tight, preventing leakage or contamination.
• Customization Available: Sizes, wall thickness, and precision tolerances can be tailored to your specific application.

• Thermocouple Protection Tubes in refineries, cracking units, and incinerators
• Optical Components for infrared and visible systems
• Semiconductor Processing Equipment
• Chemical Industry Reactors
• High-Pressure / High-Temperature Sensors
• Laser and Optical Inspection Systems

Sapphire combines exceptional mechanical strength, thermal stability, and optical clarity across a wide wavelength range. Unlike ceramics or quartz, sapphire maintains its shape and transparency up to 2000°C, resists chemical attack, and provides superior electrical insulation.