| 3.2mm/4mm Matt-matt Solar glass | ||
| Photometric Specification | ||
| Glass type | Light Transmission | |
| 3.2mm/4mm tempered without AR | 91.5%+/-0.5% | Illuminant D65 at 2°（acc.+/-0.2%） |
| 3.2mm/4mm with 1xAR | 93.5%+/-0.5% | Illuminant D65 at 2°（acc.+/-0.2%） |
| 3.2mm/4mm with 2xAR | 97%+/-0.5% | Illuminant D65 at 2°（acc.+/-0.2%） |
| Mechanical Specification | ||
| Mechanical strength(Mpa) | 45 | Annealed |
| 70 | Heat strengthened | |
| 120 | Thermally toughened | |
| Density | 2.50 | g/cm³ |
| Compression strength | >700 | Mpa |
| Bulk modulus | 48 | Gpa |
| Thermal specification | ||
| Hemispherical emissivity | 0.84 | between -18℃ and 66℃ |
| Expansion coefficient(10-6K-1) | 9 | between 50℃ and 300℃ |
| Thermal conductivity(W/m/K) | 1.05 | at 20℃ |
| Softening point | 722 | ℃ |
| Ammealing point | 550 | ℃ |
| Strain point | 502 | ℃ |
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