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Transmittance
Transmittance refers to the percentage of radiation that can pass through glazing. Transmittance can be defined for different types of light or energy, e.g., visible transmittance, UV transmittance, or total solar energy transmittance.
Solar Performance value
| Thickness | Transmittance | Refractance | |||||
|---|---|---|---|---|---|---|---|
| Glass | Thickness | Ultra-violet (%) | Visible (%) | Infrared (%) | Total Solar (%) | Visible (%) | Total Solar (%) |
| Azuria® | 1/8 | - | - | - | - | - | - |
| 3/16 | 46 | 72 | 12 | 36 | 7 | 5 | |
| 1/4 | 42 | 68 | 8 | 32 | 7 | 5 | |
| Solarbronze® | 1/8 | 39 | 67 | 62 | 64 | 7 | 6 |
| 3/16 | 30 | 59 | 52 | 55 | 6 | 6 | |
| 1/4 | 26 | 53 | 46 | 50 | 6 | 6 | |
| Solargray® | 1/8 | 37 | 60 | 55 | 58 | 6 | 6 |
| 3/16 | 29 | 50 | 44 | 48 | 6 | 5 | |
| 1/4 | 24 | 44 | 37 | 42 | 6 | 5 | |
| Solexia® | 1/8 | 43 | 83 | 45 | 60 | 8 | 6 |
| 3/16 | 35 | 80 | 34 | 52 | 8 | 6 | |
| 1/4 | 31 | 77 | 27 | 47 | 8 | 6 | |
| Thickness | Transmittance | Refractance | |
|---|---|---|---|
| Glass | Thickness | Total Solar (%) | Total Solar (%) |
| Azuria® | 1/8 | - | - |
| 3/16 | 36 | 5 | |
| 1/4 | 32 | 5 | |
| Solarbronze® | 1/8 | 64 | 6 |
| 3/16 | 55 | 6 | |
| 1/4 | 50 | 6 | |
| Solargray® | 1/8 | 58 | 6 |
| 3/16 | 48 | 5 | |
| 1/4 | 42 | 5 | |
| Solexia® | 1/8 | 60 | 6 |
| 3/16 | 52 | 6 | |
| 1/4 | 47 | 6 | |
Figures may vary due to manufacturing tolerances. All tabulated solar performance data are based on the methodology prescribed in ISO 9050, 2003 except Infrared, which is based on the solar irradiance data prescribed by ISO 9050, 2003 from 780 to2500 nm. Slight changes in transmitted optical properties may occur on exposure to sunlight.
Weight (lb/ft2)
| Glass | Thickness | ||
|---|---|---|---|
| 1/8 | 3/16 | 1/4 | |
| Azuria®, Solarbronze®, Solargray®, Solexia®, Clear | 1.5 | 2.4 | 2.9 |
| Glass | Thickness | ||
|---|---|---|---|
| 1/8 | 3/16 | 1/4 | |
| Azuria®, Solarbronze®, Solargray®, Solexia®, Clear | 1.5 | 2.4 | 2.9 |
| Interlayer | Thickness | ||||
|---|---|---|---|---|---|
| 0.015 | 0.030 | 0.045 | 0.060 | 0.090 | |
| PVB Trosifol® by Kuraray | 0.08 | 0.17 | 0.25 | 0.33 | 0.50 |
| Interlayer | Thickness | ||||
|---|---|---|---|---|---|
| 0.015 | 0.030 | 0.045 | 0.060 | 0.090 | |
| PVB Trosifol® by Kuraray | 0.08 | 0.17 | 0.25 | 0.33 | 0.50 |
All weight values are approximations and its final value may vary. Also, these values are before the heat composition in the furnace.
Mechanical Properties
- Knoop Hardness Number (indentation hardness) indenter load-500 gm Knoop Hardness Number 470 kgf/mm2
- Poisson's Ratio 0.22
- Modulus of Elasticity - Young’s Modulus of Elasticity 10,600,000 psi
- Tensile Strength (Determined as Modulus of Rupture, ultimate) Tensile Strength 6,000 psi
- Density at 70°F 157 lb/ft3
this values are met for the Azuria, Solarbronze, Solargray, Solexia and Clear glasses.
Thermal Properties
- Hemispherical Emissivity at 0 to 150°F - (glass/coating) H. Emissivity (glass/coating) 0.84 / 0.14
- Expansion Coefficient (linear), 68 to 572 °F Expansion Coefficient 4.8 x 10-6 °F
- Specific Heat at 32 to 212 °F Specific Heat 0.205 Btu/lb-°F
- Thermal Conductivity (k) at 122 °F Tensile Strength 0.542 Btu/hr-ft-°F
the above values are met for the Azuria ®, Solarbronze ®, Solargray ®, Solexia ® and Clear glasses.
Color
| Glass | Transmitted Color: D65, 10°, 1/4 in | ||||
|---|---|---|---|---|---|
| L* | a* | b* | Hue Angle. (°) | Dominant Wavelength C°, 2. (nm) |
|
| Azuria® | 86.5 | -12.3 | -7.4 | 211 | 487 |
| Solarbronze® | 77.7 | 3.1 | 5.2 | 59 | 581 |
| Solargray® | 72.5 | 0.6 | -2.2 | 285 | 477 |
| Solexia® | 90.5 | -7.4 | 1.2 | 171 | 499 |
| Glass | Transmitted Color: D65, 10°, 1/4 in | ||||
|---|---|---|---|---|---|
| L* | a* | b* | Hue Angle. (°) | Dominant Wavelength C°, 2. (nm) |
|
| Azuria® | 86.5 | -12.3 | -7.4 | 211 | 487 |
| Solarbronze® | 77.7 | 3.1 | 5.2 | 59 | 581 |
| Solargray® | 72.5 | 0.6 | -2.2 | 285 | 477 |
| Solexia® | 90.5 | -7.4 | 1.2 | 171 | 499 |
Chemical Composition (%)
SiO2
Na2O
CaO
MgO