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Sapphire Square Plate Single crystal Al₂O₃ Diameter 5.5 mm Thickness 6.04 mm

optical color sapphire crystal
August 06, 2025
Category Connection: Sapphire Parts
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The Sapphire Square Plate is a precision optical component manufactured from high-purity single-crystal aluminum oxide (Al₂O₃) through directional cutting and double-sided polishing. With dimensions of ​​5.5mm (diameter) × 6.04mm (thickness)​​, this custom-sized plate is engineered for applications demanding stringent dimensional tolerances and superior optical performance. Leveraging sapphire’s inherent physical advantages—including exceptional hardness and high-temperature resistance—this product is widely utilized in advanced optics, semiconductors, medical devices, and precision electronics.
Tags:
#sapphire tube #sapphire bearings #sapphire windows
Brief: Discover the Sapphire Square Plate, a precision optical component made from high-purity single-crystal aluminum oxide (Al₂O₃). With dimensions of 5.5mm diameter and 6.04mm thickness, this plate offers exceptional hardness, broad-spectrum optical transmission, and extreme environmental resistance. Ideal for advanced optics, semiconductors, and medical devices.
Related Product Features:
  • Ultra-high hardness with Mohs hardness of 9, providing exceptional scratch and abrasion resistance.
  • Broad-spectrum optical transmission from UV (200 nm) to mid-IR (5.5 μm) wavelengths.
  • High-temperature stability with a melting point of 2050°C and low thermal expansion coefficient.
  • Chemical inertness, resisting acids, alkalis, and oxidation for harsh environments.
  • Birefringence and low scattering ensure optical clarity in imaging systems.
  • High thermal conductivity (35-42 W/m*K) for efficient heat dissipation.
  • Electrical resistivity >10¹⁶ Ω*cm, preventing current leakage in high-power electronics.
  • Widely used in LED substrates, laser windows, aerospace, and medical devices.
Faqs:
  • What are the key advantages of sapphire square plates?
    Sapphire square plates offer ultra-high hardness (Mohs 9), broad-spectrum transparency (UV to mid-IR), and exceptional thermal stability (-200°C to 800°C), ideal for wear-resistant optics and extreme-environment electronics.
  • Where are sapphire square plates commonly used?
    They are widely applied in LED substrates (enhancing light extraction), laser windows (withstanding high-energy pulses), and aerospace infrared detectors (resisting 1000°C+ temperatures).
  • What makes sapphire square plates suitable for harsh environments?
    Their chemical inertness and high-temperature stability make them resistant to acids, alkalis, and oxidation, ideal for use in corrosive and high-temperature environments.
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