Thermal Properties Sapphire Crystals / Sapphire Optics Extreme Surface Hardness

Basic Information
Place of Origin: China
Brand Name: CRYLINK
Certification: Iso9001
Model Number: CRYLINK-Sapphire Crystal
Minimum Order Quantity: 1 Pieces
Price: negotiation
Packaging Details: Carton
Delivery Time: 3-4 weeks
Payment Terms: TT
Supply Ability: 100 pieces /month
Detail Information
Name: Sapphire Optical Crystals Surfaceflatness: </8 @632nm
Clear Aperture: >90% Orientation Tolerence: <0.5°
High Light:

Al2O3 Sapphire Optical Crystals


Hexagonal Sapphire Crystals


550nm Sapphire Crystals

Product Description

Product Details

Sapphire crystal is an excellent multifunctional material widely used in industry, national defense, and aerospace. It has high-temperature resistance up to 2000 ℃, good thermal conductivity, high hardness (Morse 9th) and good chemical stability. Usually, this material is used for high-temperature resistant infrared window, solid laser, precision wear-resisting bearings. It is also widely applied in crystal substrate, especially for blue, purple, white light-emitting diodes (LED) and blue light laser (LD). As the hardest material among all oxide crystals, Sapphire has a combination of good optical and physical properties, which even maintains at high temperature, making it the best choice for a variety of demanding applications.



  • Extreme surface hardness
  • High-temperature resistance
  • Good thermal properties
  • Excellent electric and dielectric properties and chemical resistance
  • Transmitting wavelength ranging from UV to Mid-Infrared


  • Thin and high-strength window
  • Optical substrates and window
  • Transparent electronic substrate
  • High-temperature and pressure window
  • Right angle prism


Chemical and Phisical Properties


Property Value
Chemical formula Al2O3
Crystal structure Hexagonal
Density 6.73g/cm3
Melting Point 2040°C
Refractive Index n=1.84 @550 nm
  n=1.623 @500 nm
Transmission band (μm) 0.15-6


Surface flatness <λ/8@632nm
Clear aperture >90%
Orentation tolerance <0.5°
Parallel 10”
Perpendicular 5’
Surface quality 10/5 (Scratch/Dig)
Chamfer <0.2×45°
Wavefront distorsion <λ/8@632 nm

Contact Details

Phone Number : +8618699681379