Uncoated sapphires have excellent surface hardness, and the transmittance ranges from ultraviolet to mid-infrared wavelengths. Sapphire can only be scratched by a few other substances. The uncoated substrate is chemically inert and insoluble in water, common acids or bases at temperatures up to approximately 1000°C.
Sapphire has high temperature resistance, good thermal conductivity, high hardness, infrared penetration and good chemical stability. Widely used in many fields of industry, national defense and scientific research (such as high-temperature infrared window, etc.).
Sapphire window piece basic features
The spectral range is 150-3500nm
High strength surface hardness
Scratch resistant, high temperature resistant
Chemical inertness, acid and alkali resistance
Hechen crystal provides sapphire window sheet coating service
Basic technical parameters material
Size tolerance +0.0/-0.2mm
Surface accuracy λ/4 @632.8nm
Finish 40 and 60
Edge < 0.25 mm x 45 °
Optical aperture >85%
High precision double-sided polishing
We will contact you as soon as possible