Borosilicate Glass

Borosilicate float glass is produced by the technology of float glass making. 

Main ingredients of this float glass are sodium oxideNa2O, boron oxide(B2O3), silicon dioxideSiO2. In those ingredients, boron and silicon have high content. 

For example, 
boron: 12.5~13.5%,
silicon 78~80%.

In this case, this special glass are called borosilicate float glass. 

The feature of the glass is that it has small thermal expansion coefficient, good thermal stability, chemical durability and electrical property. 
Therefore, borosilicate float glass chemical resistant, heat resistant and mechanical property are excellent. 
Moreover, the glass could use in high temperature and has strong hardness. 
So, borosilicate glass is called heat resistant glass as well. 
It is a special flameproof glass. 

Applications:
1, Home application;
e.g. internal panels in ovens and panels in microwave oven, induction heater, fireplace, space heating appliances etc.
2, Environmental project and Chemical project; 
e.g. underlayer of repellency.
3, Lighting industry  
(e.g. cover panels for high power floodlights and projectors)
4, Solar electrical energy generation;
e.g. top of solar battery.
5, Accuracy apparatus;
e.g. optically flat filter.
6, Semiconductor technology;
e.g. wafer;
7, Medical Technology  biological engineering;
8, Protection
(e.g. bullet-resisting glasscover of high grade watch);
9, Advance building flameproof glass 

Features: Our Flat Borosilicate 3.3 Float Glass Sheet is equivalent with Schott's Borofloat.

Mechanical Performance
Density  ¦Ñ              2.23+/-0.02g/cm3
Thermodynamic Performance
Thermal expansion coefficient           (0-300) 3.3+/-0.1x10-6K-1
Softening point        820+/-10
Strain point        516+/-10
Caloricity (20-100) 0.82KJ x (kgxK)-1
Thermal coefficient        1.2WxmxK-1
Thermal shock resistance 180K
Strengthening type 300K
Identical temperature difference 100K
Strengthening type 300 K
Maximum working temperature Short time(<10h): 500  
Long time(>10h): 450
Chemical Performance
Water resistance   ISO719/DIN12111 HGB1/ISO720 HGA1
Acid resistance ISO1776/DIN12116 1
Alkali resistance ISO695/DIN52322 A2

Optical Property
Refractive index Nd: 1.47384
Transmittance spectrum curve

Electrical Property
Specific resistance lg¦Ñ  8.0¦¸xcm at 250
Dielectric dissipation fraction tan ¦Ò (1 megacycle at 20): 38x10-4
Dielectric constant =4.7 

Available Thickness (mm):
1.50+/-0.20         4.00 +/-0.15
2.00+/-0.20         5.00+/-0.15
2.25+/-0.20         5.50+/-0.15
2.75+/-0.20         6.00 +/-0.15
3.0+/-0.20           6.50+/-0.20
3.30+/-0.20         7.50+/-0.30
3.80+/-0.15         8.00+/-0.30

We also do the following upon customers' requirements:
Cutting
Round corner
Round edge
Surface fine polishing
Hole drilling
Coating
Surface printing and sand blasting
Thermal bending.

More information and the prices will be sent to your provided email box. Your enquiry will be replied within 12 hours. Please visit our website for more details.