Borofloat 3.3 has same physical and chemcial property of Pyrex, it looks like flat sheet and could be cut,grund,polished and tempered. the thickness is 2.0mm,3.0mm,4.0mm,5.0mm,6.0mm,8.0mm etc.
Application: Lighting system, Electronics, Electrical apparatus, Industries, Construction e.g.Lamp cover, Lamp shade, Glass cover, Glass Shade, Light shade, Light cover, Glass sheet, Glass lens, Optical lens, Temper glass, Wafer,Substrate,Stage lens, LED lens, Reflector lens, Sight lens, Front lens, Spot lens, Flood lens, Aspheric lens, Ball lens, Flat lens, Round lens,,Glass disk,Glass window…
The physical index of borosilicate glass:
Refractive Index: 1.473@587.6nm
Density: 2.23+/-0.02 g/cm3
Modulus of elasticity: 64 x 103 n/mm3
Coefficient of thermal expansion: 3.3+/-0.1 x 10-6/K
Optical transmission in usable range (wavelength breakdown):90-92%
Working point: 1260+/-20 ℃
Softening point: 820+/-10℃
Annealing point: 560+/-10℃
Strain point: 510+/-10℃
Transformation temperature: 525+/-1.5℃
Dielectric constant: 4.6
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