Borosilicate float glass

1 solar collectors' glass 2 borosilicate glass 3.3 3 powerful heat resistance 4 high softening point 5 high quality glass

I. Specification of Product

Dimensions: 1150mm×850mm 1150mm×1700mm 1200mm×600mm other formats upon request

Available thickness: 1mm--12mm 

List of Thickness and Tolerance

Thickness mm	Tolerance mm	Thickness mm	Tolerance 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
10.00	±0.30	12.00	±0.30

3) Net sized glass of strengthening can be supplied as per the customers requirement;

4) Glass of small cut size is available according the requirement from customers.

II. Performance of the Product

1). Mechanical Performance

     Density  ρ              2.23±0.02g/cm3

2).Thermodynamic Performance

    Thermal expansion coefficient           (0-300) 3.3±0.1×10-6K-1

    Softening point                                 820±10

    Strain point                                      516±10

    Caloricity                                        (20-100) 0.82KJ × (kg×K)-1

    Thermal coefficient                           1.2W×m×K-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

3).Chemical Performance

     Water resistance                   ISO719/DIN12111 HGB1/ISO720 HGA1

     Acid resistance                     ISO1776/DIN12116 1

     Alkali resistance                    ISO695/DIN52322 A2

   

4).Electrical Property

    Specific resistance lgρ            8.0Ω×cm at 250

    Dielectric dissipation fraction   tan σ (1 megacycle at 20): 38×10-4

    Dielectric constant                 ε=4.7

The above mentioned specifications are in conformity with standard of ISO3585 after inspection and detection as well as examination by the Quality Supervision and Inspection Center of the National Light Industry for Glass Product and, Beijing Glass & Ceramic Quality Supervision and Inspection Center.

III. Means of Processing for Customers

    Cutting

    Round corner

    Round edge

    Surface fine polishing

    Hole drilling

    Coating

    Surface printing and sand blasting

    Thermal bending