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Specifications
1.glass for solar collector2.high quality
3.3.3 co-efficient of expansion
4.820 softening point
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 HGA1Acid 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 cornerRound edge
Surface fine polishing
Hole drilling
Coating
Surface printing and sand blasting
Thermal bending
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