Sapphire Disc
High-purity sapphire discs engineered for demanding optical, mechanical, and electronic applications. They offer exceptional hardness, thermal stability, and chemical resistance. Commonly used as windows, spacers, or insulating substrates in lasers, sensors, and precision systems. Custom sizes, thicknesses, and surface finishes are available.
- Second only to diamond in hardness
- Outstanding optical transparency and flatness
- High thermal shock and heat resistance
- Excellent chemical and corrosion resistance
- Customizable diameter, thickness, and surface finish
Sapphire Disc
Sapphire disc offers exceptional hardness, optical transparency, and chemical durability. Ideal for use in optical windows, sensor covers, and precision substrates, this advanced ceramic sapphire plate maintains clarity and dimensional stability under extreme thermal and mechanical stress. Manufactured from single-crystal alumina, it withstands scratching, thermal shock, and corrosive environments, making it suitable for aerospace, semiconductor, and analytical instruments. Precision polishing and tight flatness tolerances are available for demanding optical and industrial applications.
Technical Specifications
| Parameter | Typical Range (may vary for different shapes/materials) |
| Size Range | ≤200mm x 200mm |
| Thickness Precision | ±0.005mm |
| Surface Roughness | Ra0.02 |
Please refer to our Processing Capability Table for the full range of processing capability.
Advantages of Sapphire Disc
- Exceptional Hardness and Scratch Resistance: Because sapphire ranks 9 on the Mohs scale, the disc is extremely durable and resistant to wear and abrasion.
- High Optical Transparency: As a result, it allows excellent light transmission across a wide spectrum, including UV and IR ranges.
- Chemical and Corrosion Resistance: Therefore, it remains unaffected by acids, alkalis, and solvents in aggressive environments.
- Thermal Stability: Thanks to its high melting point and low thermal expansion, it performs reliably in high-temperature applications.
- Biocompatibility and Inertness: Consequently, it is safe for use in medical, biological, and food-contact environments.
- Polished Surface Finish: Enables low-scatter, high-clarity performance in optical and sensor systems.
Applications of Sapphire Disc
- Optical Windows and Lenses: Used in high-performance cameras, sensors, and spectrometers for its clarity and scratch resistance.
- Medical and Diagnostic Devices: Ideal for protective covers and optical interfaces in sterilized and biocompatible equipment.
- Semiconductor Processing: Employed in viewports and substrate holders for high-purity, high-temperature applications.
- Watches and Consumer Electronics: Applied as durable, scratch-resistant watch crystals and display windows.
- Laser Systems: Serves as an optical component in high-energy lasers due to its thermal and optical stability.
- Aerospace and Defense Instruments: Integrated into sensor windows and protective covers that must endure harsh environmental conditions.
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