Glass Discs with Good Thermal and Optical Properties
Glass discs, whose material can be soda-lime, borosilicate or quartz, have different sizes and applications. The difference of soda-lime, borosilicate and quartz is the different content of silicon dioxide. The more silicon dioxide contain, the glass disc is stronger in thermal and optical properties.
The diameter of our glass disc can be 5 mm to 1000 mm. The thickness can be 0.3 mm to 40 mm. Compared with other factory products, our glass discs surface is polished and no bubble and edge is exact round and polished. What's more, Our glass discs can work in very high temperature as well as acid and alkali environment. In addition, as optical glass, our glass discs light transmittance can reach 93%.
With good thermal, mechanical and optical properties, the glass discs are widely used in instruments, LED lights, optical industry and so on.
GD-1: Our glass discs can be as thin as 0.3 mm and there is no bubble in them.
GD-2: Our thin glass discs have good optical properties and can also resist acid and alkali.
Specification
- Material: soda-lime, borosilicate, quartz.
- Diameter: 5 mm - 1000 mm, according to customers' requirements.
- Thickness: 0.3 mm - 40 mm.
- Surface handling: polishing, flat.
- Edge handling: grinding, polishing.
| Material | Soda-lime | Borosilicate | Quartz |
|---|---|---|---|
| SIO2 content | 60% - 75% | > 81% | > 90% |
| Density (25 °C) | 2.53 | 2.23 | 2.20 |
| Coefficient of thermal expansion | 8.6 × 10-6 | 3.3 × 10-6 | 5.5 × 10-7 |
| Softening point | 726 °C | 820 °C | 1780 °C |
| Melting point | 780 °C | 1680 °C | 2000 °C |
| Annealing point | 546 °C | 560 °C | 1120 °C |
| Temperature for short time working | 400 °C | 500 °C | 1500 °C |
| Temperature for long time working | 350 °C | 450 °C | 1200 °C |
| Specific heat | 0.18 J/kg °C | 0.9 J/kg °C | 670 J/kg °C |
| Material | Soda-lime | Borosilicate | Quartz |
|---|---|---|---|
| Index of refraction | 1.523 | 1.475 | 1.458 |
| Transmittance |  |
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Features and Advantages:
- Corrosion resistance
The glass disc especially quartz can resist acid and alkali. The quartz do not react with any acid, except hydrofluoric acid. - High working temperature
The soda-lime glass discs can work under 450 °C high temperature and the quartz glass discs can even work under 1200 °C for a long time. - High light transmittance
The quartz transmittance can reach 95%. - Polished surface
There is no bubble or scratch and the surface is flat, clear and polished. - Perfect edging handling
The edge is exactly round. It can be ground and polished. The polished edge is more smooth.
GD-3: Our glass discs are flat and polished in surface without any bubble.
GD-4: We can handle the edge well and make sure it smooth and polished.
GD-5: Our glass discs are available in different thickness as your requirement.
GD-6: Glass desk 0.5 mm and 5 mm thickness.
Application:
- As cover discs, they can protect from dust and moisture.
- Glass discs are used in optical industry because of it's high transmittance.
- As cover glass and slides, glass discs are widely used in instruments.
- It is used in LED lights because of its good optical properties.
Package and transportation:
- One piece in a plastic bubble bags and 100 bags in a carton and 10 cartons in a wooden case.
- According to customers' requirements.
GD-7: Fine glass discs are packed in plastic bubble bags to avoid collision.
GD-8: Strong carton boxes make sure the safety of the glass discs.
Inquiry for Our Product
LingYan Engineering Co., Ltd.
E-mail:
sales@glass-product.com
When you contact us, please provide your detail requirements.
That will help us give you a valid quotation.
