Single crystal sapphire possesses a unique combination of excellent optical, physical and chemical properties. The hardest of the oxide crystals, sapphire retains its high strength at high temperatures, has good thermal properties and excellent transparency.

It is chemically resistant to common acids and alkali at temperatures up to 1000°C as well as to HF below 300°C. These properties encourage its wide use in hostile environments where optical transmission in the range from the visible to the near infrared is required.

Maximum available size for windows, lenses and blanks: 100mm Dia x 10mm Thinkness and 100mm Square x 10mm Thickness.

Sapphire is also available in form of round rod (2-20mm Dia, 150-300mm long), rectangular and square rod and ribbon (10-80mm wide, 1-4mm thick, 150-300mm long), tubing (3-30mm Dia, 1-8mm wall thickness, 150-300 mmlong) and other custom cross-section configurations.

The external transmittance of sapphire is shown in the figure below: