Product description:
Borosilicate glass is one of transparent colorless glasses, the wavelength is between 350nm to 2500nm, and the transimitance is more than 90%, 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.
AUTC 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.
Specification of our quartz glass as following: | Range of diameter | Dia.0.7mm-Dia.400mm |
| Range of curve radius | R1.5-R∞ etc. |
| Tolerance of diameter | +/-0.1, +/-0.01, +/-0.005 etc. |
| Surface accuracy | λ , 1/2λ , 1/4λ , 1/10λ etc. |
| Tolerance of Thickness | +/-0.1, +/-0.05, +/-0.01 etc. |
| Centration | +/-2′,+/-1′ etc. |
| Aperture N | 5, 1 etc. |
| Irregularity ΔN | 2, 1, 0.5, 0.2 etc. |
| Surface quality | 60/40, 40/20, 20/10, 10/5 etc. |
| 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 |
