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Tuffak® Optical Grade High-Impact Polycarbonate Sheet |
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When you need a clear, rugged sheet for the toughest
applications, nothing outperforms Tuffak® Optical
Grade polycarbonate sheet. It is excellent for uses
including transit shelters, protective laminations, window
glazing and more.
Tuffak® OG polycarbonate sheet has
all the properties and features you demand, including:
- High optical clarity
- Highest light transmission of the
Altuglas International line
- UV stability
- Low distortion
TYPICAL STANDARD PROPERTIES
| PROPERTY |
TEST METHOD |
UNITS |
TUFFAK® |
| PHYSICAL |
| Specific gravity |
ASTM D792 |
- |
1.2 |
| Refractive index @ 72 °F |
ASTM D542 |
- |
1.586 |
| Light transmission, clear 1⁄8” |
ASTM D1003 |
% |
87 |
| Haze |
ASTM D1003 |
% |
1 |
| Rockwell hardness |
ASTM D785 |
Mscale |
70 |
| Water absorption, equilibrium, 24 hrs |
ASTM D570 |
% |
0.15 |
TYPICAL STANDARD PROPERTIES
| PROPERTY |
TEST METHOD |
UNITS |
TUFFAK® |
| MECHANICAL |
| Tensile strength, yield |
ASTM D638 |
psi |
9,000 |
| Tensile strength, ultimate |
ASTM D638 |
psi |
9,500 |
| Tensile modulus |
ASTM D638 |
psi |
340,000 |
| Tensile elongation |
ASTM D638 |
% |
110 |
| Flexural strength |
ASTM D790 |
psi |
14,000 |
| Flexural modulus |
ASTM D790 |
psi |
340,000 |
| Compressive strength |
ASTM D695 |
psi |
12,500 |
| Compressive modulus |
ASTM D695 |
psi |
340,000 |
| Poisson’s ratio |
- |
- |
0.38 |
| Izod impact strength, notched @ 1/8” |
ASTM D256 |
ft-lbs/inch |
16 |
| Charpy impact |
ASTM D256 |
ft-lbs/inch |
no break |
| Instrumental drop dart, 1/8” |
ASTM D3763 |
ft-lbs |
>50 |
| Shear strength @ yield |
ASTM D732 |
psi |
5,800 |
| THERMAL |
| Coefficient of thermal expansion |
ASTM D696 |
in/in/ °F |
0.0000380 |
| Coefficient of thermal conductivity |
ASTM C177 |
BTU-in/hr-sqft- °F |
1.35 |
| DTUFL @ 264 psi |
ASTM D648 |
°F |
275 |
| UValue (summer gain,winter loss) |
- |
BTU-in/hr-sqft- °F |
0.98, 1.06 |
| ELECTRICAL |
| Dielectric constant, test @ 0.125”thick |
ASTM D149 |
volts/mil |
380 @ 25 °C
450 @ 100 °C |
| Dielectric constant |
ASTM D150 |
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| 60 Hz |
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- |
2.9 |
| 1,000,000 Hz |
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- |
2.9 |
| Volume resistivity @ 23 °C |
ASTM D257 |
ohm/cm |
10^16 |
| FLAMMABILITY |
| Horizontal burn rate |
ASTM D635 |
inches |
<1 (CC-1) |
| Ignition temperature |
ASTM D1929 |
°F |
1,090 |
| Smoke developed |
ASTM D2843 |
- |
70 |
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