3mm Heat Strengthened Borosilicate Glass Sheet Heat Resistant
Borosilicate 3.3
About Borosilicate Glass:
Borosilicate glass has a very low thermal expansion coefficient,
about one-third that of ordinary glass. This reduces material
stresses caused by temperature gradients, thus making it more
resistant to breaking. This makes it a popular material for objects
like telescope mirrors, where it is essential to have very little
deviation in shape. It is also used in the processing of high-level
waste, where the waste is immobilised in the glass through a
process known as vitrification (contrast with Synroc).
Advantage of Borosilicate Glass:
- High temperature resistant.
- Excellent thermal shock stability making them more dimensionally stable.
- High transmission to 85%.
- Electric insulation ,it is 10000 times of usual glass.
- Low thermal expansion.
Specification of Borosilicate Glass:
| Physical Characteristics | Value |
| Coefficient of mean linear thermal expansion α (20ºC; 300ºC) | 3.3·10-6 K-1 |
| Transformation temperature Tg | 525ºC |
| Glass temperature at viscosity η in dPa·s: | |
| 1013 annealing point | 560ºC |
| 107.6 softening point | 825ºC |
| 104 working point | 500ºC |
| Maximum shot-time working temperature | 500ºC |
| Density ρ 25ºC | 2.23g·cm-3 |
| Modulus of elasticity E (Young's modulus) | 63·103N·mm-2 |
| Poisson's ratio μ | 0.20 |
| Thermal conductivity λw at 90ºC | 1.2W·m-1·k-1 |
| Temperature for the specific electrical resistance of 108 Ω·cnm tk
100 | 250ºC |
| Lagarithm of the electric volume resistivity (Ω·cm) at 250 ºC | 8 |
| Lagarithm of the electric volume resistivity (Ω·cm) at 350 ºC | 6.5 |
| Dielectric properties (1 MHz, 25): | |
| Dielectric constant (permittivity) ε | 4.6 |
| Dielectric loss factor (dissipation factor) tan δ | 37·10-4 |
| Refractive index (λ=587.6nm) nd | 1.473 |
| Stress-optical coefficient K | 4.0·10-6 mm2·N-1 |
Applications of Borosilicate Glass:
1. Household electrical appliance (panel for oven and fireplace,
microwave tray etc.);
2. Environmental engineering and chemical engineering (Lining layer
of repellence, autoclave of chemical reaction and safety
spectacles);
3. Lighting (spotlight and protective glass for jumbo power of
floodlight);
4. Power regeneration by solar energy (solar cell base plate);
5. Fine instruments (optical filter);
6. Semi-conductor technology (LCD disc, display glass);
7. Latrology and bio-engineering;
8. 3D printers dedicated heating bed
FAQ:
Q1: How can we get detailed price?
-- Please provide us product thickness, size & qty, which will help
us calculate costs for you.
-- CIF price is also available if destination port is provided.
Q2: How about sample and freight cost?
-- In general, we provide free samples, customers take freight
cost.
Q3: How long is the production lead time for mass order?
-- It will take about 1~3 weeks, depends on product complexity &
order quantity.
Q4: How do you control product quality?
-- Clearly understand customers’ product requirements;
-- To transfer customers requirements to internal product
documents;
-- Complete quality assurance system from IQC to OQC. Outgoing
inspection record is available for each order.
Q5: What about the payment?
-- T/T, L/C, Ali Trade Assurance, Western Union.
Q6: What about the after-sales service?
-- Normally we response within 4 hours, by email or WhatsApp or
Wechat etc;
VALUES GLASS, a professional supplier of Glass and Mirror in Shanghai, China,
sepcializing in deep processing and fine processing. Since the year
of 2005, our business has expanded rapidly all over the world,
including United States, Australia, South Korea, Germany and other
European countries, and our company has won high reputation from
customers with efficient communicate, competitive prices, quality
products, on time delivery and best service.
