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Tuffak® Optical Grade High-Impact Polycarbonate Sheet

When you need a clear, rugged sheet for the toughest applications. Excellent for uses including transit shelters, protective laminations, window glazing and more.

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 Optical Grade High-Impact Polycarbonate Sheet

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
60 Hz - 2.9
1,000,000 Hz - 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