Borosilicate Glass Windows for Fireplace
borosilcate glass windows for fireplace
Product description:
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.
Haisheng Optical 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.
| Silicon content | >80% |
|---|---|
| Strain and Temperature | 520ºC |
| Annealing temperature | 560ºC |
| Softening temperature | 820ºC |
| Index of refraction | 1.47 |
| Transmittance | >=90% |
| Elastic modulus E | 67KNmm-2 |
| Tensile strength | 40-120Nmm-2 |
| Processing temperature(104dpas) | 1220ºC |
| Coefficient of thermal expansion(20-300ºC) | 3.3×10-6/K-1 |
| Poisson's ratio μ | 0.2 |
| Density(20ºC) | 2.23g/cm3 |
| Specific heat | 0.9Jg-1K-1 |
| Thermal conductivity | 1.2Wm-1K-1 |
| Water resistance(ISO 719) | 1 Level |
| Acid resistance(ISO 195) | 1 Level |
| Alkali resistance(ISO 695) | 2 Level |
| CML resistant glass rod glass rod Φ6 × 30mm | 300º |
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