General Chemical & Physical Properties
of Electroverre 1mm (0.040") glass
Approximate Chemical Composition
Silicon Dioxide
SiO2
72.20%
Sodium Dioxide
Na2O
14.30%
Potassium Oxide
K2O
1.20%
Calcium Oxide
CaO
6.40%
Magnesium Oxide
MgO
4.30%
Aluminum Oxide
Al2O3
1.20%
Ferric Oxide
Fe2O3
0.03%
Sulfur Oxide
SO3
0.30%
Reflectance Second Surface Mirror
Total Solar Reflection (M=2) Proportion of Normally Incident Solar Energy Reflected from a second surface mirror when solar elevation is 30° – 95.3% for 1mm glass.
Light Transmission
Total Solar Reflection (M=2) Proportion of Normally Incident Solar Energy transmitted from a second surface mirror when solar elevation is 30° – 95.3% for 1mm glass.
Mean Coefficient of Expansion
90.6 x 10-7C°. (20-30C°)
Solar Energy
Refractive Index
At=479.99nm
1.5213
At=546.07nm
1.517
At=643.85nm
1.5126
Specific Gravity
2.479
Strain Point Log h=14.5
513°C
Littleton Softening Point
720°C
Thanks to a light transmission of approximately 92% for 1mm glass, our extra white low iron glass is particularly suitable for solar energy applications.
