Others

POSITION >> HOME > Others >

Brosilicate/Pyrex glass

Borosilicate glass is one of transparent colorless glasses, the wavelength is between 350nm to 2500nm, and the transimitance is more than 90%.

Its alkalifast, and the high temperature is up to 400°C,If course handling, the high temperature resiatant can reach 550°C.

1. Raw material: Borosilicate glass, Pyrex, Optical glass.

2. Processing: by Molding, Grinding, Polishing.

3. Surface quality: optical surface quality and well controlled tolerance

4. Inside quality: clear and transparent, no mold marks, no inside bubble and dirts.

5. Great heat resistance performance,stable chemical property.

6. Working field :widely used in high-temperature observation windows, lighting (high-power lighting panel), appliances, laboratory containers, solar, lighting and other fields.

This company produces of high borosilicate glass, with a good appearance, high temperature, resistance strong pressure, acid and alkali, high transparency, good quality, After cutting, grinding, polishing, milling,Tempered and so on process to complete.

borosilicate glass physics and chemical propety
Silicon content	>80%
Strain temperature	520℃
Annealing temperature	560℃
Softing temperature	820℃
Refractive index	1.47
Transmission	≧90％
Elasticity modulus	67KNmm-2
Tensile strength	40-120Nmm-2
Operation temperature（104dpas）	1220℃
Thermal expansivity（20-300℃）	3.3×10-6/K-1
Poisson ratio μ	0.2
Density（20℃）	2.23g/cm3
Specific heat	0.9Jg-1K-1
Thermal conductivity	1.2Wm-1K-1
Hydrolytic resistance（ISO 719）	1 Class
Acid resistance（ISO 195）	1 class
Alkaline resistance（ISO 695）	2 class