SUNMAX™ Premium is an extra clear float glass especially optimized for solar applications. Combined with the excellent durability of glass, SUNMAX™ Premium is the product of choice for photovoltaic modules and solar mirrors.
SUNMAX™ Premium conforms to EN572 and can be delivered fully tempered as per EN12150.
MAIN CHARACTERISTICS | |||
Light Transmission (%) | 1mm - 1/25”: 91.8 | Illuminant D65 at 2° (acc. +/- 0.2%) | |
| 3.2mm - 1/8”: 91.7 | Illuminant D65 at 2° (acc. +/- 0.2%) | |
| 4mm - 5/32”: 91.6 | Illuminant D65 at 2° (acc. +/- 0.2%) | |
Energy Transmission (%) | 1mm - 1/25”: > 91.7 | ISO9050 | |
| 3.2mm - 1/8”: from > 90.9 to 91.3 | ISO9050 | |
| 4mm - 5/32”: from > 90.7 to 91.1 | ISO9050 | |
Specific weight (kg/m²) | 1mm - 1/25”: 2.5 |
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| 3.2mm - 1/8”: 8 |
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| 4mm - 5/32”: 10 |
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Processing conditions and dimensions depending on the applications. | |||
AGC can help evaluating these values according to other standards and/or to the specificities of the final application. | |||
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MECHANICAL CHARACTERISTICS | |||
Mechanical strength (MPa) | 45 | Annealed | |
| 70 | Toughened | |
| 120 | Tempered, EN12150 | |
Young modulus (GPa) | 70 | EN572 | |
Poisson ratio | 0.2 | EN572 | |
Hardness | Mohs (scratch hardness) | 6 | |
| Knoop (identation hardness) | 470 | Indenter load 500g |
Density (kg/m³) | 2500 | EN572, at 18°C | |
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THERMAL CHARACTERISTICS | |||
Hemispherical emissivity (corrected) | 0.84 | Between -18°C and 66°C | |
Expansion coefficient (10-6 1/K) | 9 | EN572, between 20°C and 300°C | |
Specific heat (J/kg/K) | 720 | EN572 | |
Thermal conductivity (W/m/K) | 1 | EN572 | |
Softening point (°C) | 722 |
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Annealing point (°C) | 552 |
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Strain point (°C) | 500 |
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CHEMICAL COMPOSITION | |||
Silicon dioxide (SiO2, %) | 69 to 74 | EN572 | |
Sodium oxide (Na2O, %) | 10 to 16 | EN572 | |
Calcium oxide (CaO, %) | 5 to 14 | EN572 | |
Magnesium oxide (MgO, %) | 0 to 6 | EN572 | |
Aluminum oxide (Al2O3, %) | 0 to 3 | EN572 | |
Trace elements (FeO, etc., %) | < 5 |
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