Product Details

Specifications

1.glass for solar collector
2.3.3 co-efficient of expansion
3.820 softening point
4.180K thermal shock resistance

glass for solar collector-Borosilicate Float Glass

I. Specification of Product

1) Dimensions: 1150mm×850mm 1150mm×1700mm other formats upon request

2) Available thickness: 2mm--12mm 15 20mm

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

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