Anti Glare Etched GlassChemical and physical properties of FLOAT glass.
| Typical composition: |
SiO2 |
AI203 |
Fe203 |
RO |
R20 |
| % by Weight: |
72-73% |
0,5-0,7% |
0,10-0,12% |
12,9-13,1% |
13,2-13,5% |
| Transmission for glass thickness of: |
| 1,2 mm |
TL = 91,3% ± 1% |
TE = 89,1% ± 1% |
| 2mm |
TL = 90,7% ± 1% |
TE = 87,4% ± 1% |
| 3mm |
TL = 90,1% ±1% |
TE = 85,3% ± 1% |
| 4mm |
TL = 89,4% ± 1% |
TL = 83,2% ± 1% |
| Refractive index: |
nD = 1,52 |
| Density: |
= 2,5 kg/dm3 |
| Coefficient of thermal expansion: |
a = 9 • 106 K1 |
| Thermal conductivity: |
0,8 W/mK |
| Young's modulus: |
7,3 • 104 N/mm2 |
| Poissons ratio: |
0,23 |
| Strain point: |
Log = 13,5; T 526° C |
| Transformation temperature: |
Log = 12,3; T 552° C |
| Annealing point: |
Log = 12,0; T 559° C |
| Dilatometric start of softening: |
Log = 10,3; T 600° C |
OPTICAL AND PHYSICAL REQUIREMENTSGloss:
Inspection Method: Gloss Measurement Procedure Glossmaster 600 angle. Light is directed on the surface of the glass at a defined angle and the reflected light is measured photoelectrically.
Resolution:
Inspection Method: Resolution Measurement Method TARGET, USAF 1951.
Roughness:
Inspection Method: Perthometer, Ra value, Rz value.
| Characteristics by Etch Type: |
| Gloss, 60° |
Gloss, 20° |
Resolution |
Roughness |
| 100 ± 8 |
80 ± 8 |
>2.00 lines/mm (1:1) |
.2 - .3 um |
| 115 ± 8 |
100 ± 8 |
>2.00 lines/mm (1:1) |
.2 - .3 um |
| DIMENSIONAL REQUIREMENTS |
| Thickness: Inspection Method: Calipers |
| TYPE |
RANGE |
| 1,00 mm |
0,95 - 1,05 mm |
| 1,1 0 mm |
1,00 - 1,20 mm |
| 1,50 mm |
1,50 - 1,70 mm |
| 2,00 mm |
1,80 - 2,00 mm |
| 3,00 mm |
2,80 - 3,00 mm |
| 4,00 mm |
3,80 - 4,20 mm |
| 5,00 mm |
4,80 - 5,20 mm |
|
