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As grown Sapphire crystal boule Sapphire ingot optical device manufacturing

sapphire glass
April 02, 2025
Category Connection: Sapphire Optical Windows
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Sapphire Crystal Boule (Sapphire crystal material) is a synthetic single crystal alumina (α-Al₂O₃), It is usually grown by Czochralski (CZ) or Heat exchange Method (HEM). Because of its extremely high hardness (Mohs hardness 9, second only to diamond), excellent light transmission (ultraviolet to infrared band) and excellent chemical stability, sapphire is widely used in high-end optics, semiconductors, consumer electronics and industrial fields.
Tags:
#sapphire glass lens #sapphire cover glass #sapphire glass window
Brief: Discover the premium Grown Sapphire Crystal Boule, crafted using the KY Kyropoulos method, weighing 80kg-300kg. Ideal for optical device manufacturing, this synthetic single crystal alumina offers unmatched hardness, light transmission, and chemical stability for high-end applications.
Related Product Features:
  • Synthetic single crystal alumina (α-Al₂O₃) with Mohs hardness 9, second only to diamond.
  • Wide light transmission range from ultraviolet to infrared (0.15~5.5μm).
  • Excellent chemical stability, resistant to acids, alkalis, and radiation.
  • High thermal properties with a melting point of 2050℃ and thermal conductivity of 35W/(m*K).
  • Available in common sizes of 2-12 inches diameter for versatile applications.
  • Used in semiconductor, optical, consumer electronics, and industrial fields.
  • Customizable with coatings like AR, HR, or filter films for specific band optimization.
  • Precision machining options include wafers, optical windows, and shaped parts.
Faqs:
  • What is the primary use of a sapphire crystal boule?
    Sapphire crystal boules are primarily used to produce high-performance optical components, LED substrates, and scratch-resistant cover glass for consumer electronics.
  • Why is sapphire crystal considered expensive?
    Sapphire crystal is costly due to its extreme hardness requiring specialized cutting/polishing and high-purity growth processes like the Czochralski method.
  • What are the thermal properties of sapphire crystal boules?
    Sapphire crystal boules have a melting point of 2050℃, thermal conductivity of 35W/(m*K), and a coefficient of thermal expansion of 5.8×10⁻⁶/K, making them highly resistant to thermal shock.
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