MAKROLON® SL
MAKROLON® SL polycarbonate sheet is an enhanced UV resistant sheet with exceptional weatherability and superior impact strength.
Available in clear as well as a variety of colors, SL is the perfect choice for extended service life and resistance to color shift. MAKROLON SL polycarbonate sheet is easily thermoformed, fabricated, and decorated. This performance is backed by a comprehensive warranty against breakage, excessive yellowing, and loss of light transmission.
Applications:
Sign applications include predominantly white sign faces, elevated sign masts, and other harsh environment installations. Architectural applications include covered walkways, barrel vaults, upper story school glazing, bus shelters, and thermoformed skylights.
High Impact Strength
MAKROLON polycarbonate sheet is virtually unbreakable with 30 times the impact strength of acrylic and approximately 10 times that of impact modified acrylic.
Code Compliance
MAKROLON polycarbonate sheet products satisfy major building code requirements for a CC-1 rating in construction applications (BOCA, ICBO, SBCCI, and Dade County). MAKROLON polycarbonate sheet is approved for Consumer Product Safety Commission (CPSC 16CFR 1201) categories I & II and ANSI Z97. 1-1984 Safety Glazing Standards. MAKROLON polycarbonate sheet products are listed with Underwriters Laboratories for the UL flammability standard and the UL972 standard for burglary resistant glazing materials. Additionally, MAKROLON polycarbonate sheet is listed with Underwriters Laboratories for the UL48 standard for component sign accessories in rigid signface systems.
Typical Physical Properties
| Property | Test Method | Units | MAKROLON |
|---|---|---|---|
| PHYSICAL | |||
| Specific Gravity | ASTM D792 | - | 1.2 |
| Refractive Index @ 72°F | ASTM D542 | - | 1.586 |
| Light Transmission, Clear 1/8" | ASTM D1003 | % | 86 |
| Light Transmission, Gray/Bronze | ASTM D1003 | % | 50 |
| Light Transmission, Dark Gray | ASTM D1003 | % | 18 |
| Rockwell Hardness | ASTM D785 | - | M70/R118 |
| Water Absorption, Equilibrium, 24 hrs | ASTM D570 | % | 0.15 |
| MECHANICAL | |||
| Tensile Strength, Yield | ASTM D638 | psi | 9000 |
| Tensile Strength, Ultimate | ASTM D638 | psi | 9,500 |
| Tensile Modulus | ASTM D638 | psi | 345000 |
| Flexural Strength | ASTM D790 | psi | 13,500 |
| Flexural Modulus | ASTM D790 | psi | 345000 |
| Compressive Strength | ASTM D695 | psi | 12,500 |
| Compressive Modulus | ASTM D695 | psi | 345000 |
| Elongation | ASTM D638 | % | 110 |
| Poisson's Ratio | - | - | 0.38 |
| Izod Impact Strength, Notched @ 1/8" |
ASTM D256 | Ft-lbs/in | 12-16 |
| Izod Impact Strength, Unnotched @ 1/8" | ASTM D256 | Ft-lbs/in | 60 (No failure) |
| Instrumented Impact, 1/8˝ | ASTM D3763 | Ft-lbs | >45 |
| Shear Strength, @ Yield | ASTM D732 | psi | 6000 |
| Shear Strength, Ultimate | ASTM D732 | psi | 10000 |
| Shear Modulus | ASTM D732 | psi | 114000 |
| THERMAL | |||
| Coefficient of Thermal Expansion | ASTM D696 | In/in/F | 3.75 x 10-5 |
| Coefficient of Thermal Conductivity | ASTM C177 | Btu-in/hr-ft2-F | 1.35 |
| Heat Deflection Temperature, @ 264 psi | ASTM D648 | F | 270 |
| Heat Deflection Temperature, @ 66 psi | ASTM D648 | F | 280 |
| Brittle Temperature | ASTM D746 | F | -200 |
| Shading Coefficient, Clear 1/8˝ | ASHRAE | - | 1.02 |
| Shading Coefficient Gray, Bronze 1/8˝ | ASHRAE | - | 0.7 |
| U Value 1/4˝ (summer gain, winter loss) | - | - | 0.90, 0.96 |
| ELECTRICAL | |||
| Dieletric Constant, @ 10 Hz | ASTM D150 | - | 2.96 |
| Dieletric Constant, @ 60 Hz | ASTM D150 | - | 3.17 |
| Volume Resistivity | ASTM D257 | Ohm-cm | 8.2 x 1016 |
| Dissipation Factor, @ 60 Hz | ASTM D150 | - | 0.0009 |
| Dissipation Factor, @ 1 Hz | ASTM D150 | - | 0.01 |
| Arc Resistance | ASTM D495 | Seconds | |
| S. Steel Strip Electrode | 10-11 | ||
| Tungsten Electrode | 120 | ||
| Dielectric Strength, in air, 125 mils | ASTM D149 | V/mil | 380 |
| FLAMMABILITY | |||
| Horizontal Burn, AEB | ASTM D635 | Inches | <1 |
| Ignition Temperature, Self | ASTM D1929 | F | 1070 |
| Ignition Temperature, Flash | ASTM D1929 | F | 870 |
| UL 94, Clear @ .060˝ | UL 94 | - | V2 |
| UL 94, Clear @ .220˝ | UL 94 | - | V0 |
Sheffield Plastics Inc. will not be responsible for the use of this information relative to actual application. Users must make their own determination of its suitability for their specific application. No warranty is made for the fitness of any product, and nothing herein waives any of the seller’s conditions of sale.
