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Acrylic PMMA
(Polymethyl-Methacrylate) Specifications

904 West 6th Street, Shiner, Texas 77984 USA
Phone: 1-361-594-2941     Fax: 1-361-594-2349     E-Mail: info@boedeker.com

1-800-444-3485

BPI Home Page | Applications | Materials Guide | Contact Us!

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GENERAL DESCRIPTION
Acrylics (Polymethyl-Methacrylate or PMMA) is an amorphous thermoplastic which is optically transparent, unaffected by moisture, and offers a high strength-to-weight ratio. Common trade names of acrylic include Plexiglas ®, Lucite ®, and Acrylite ®.

( see also AC-300™ Static-Control Acrylic Specifications )

GENERAL PROPERTIES
Acrylics offer high light transmittance with a Refractive Index of 1.49 and can be easily heat-formed without loss of optical clarity. Prolonged exposure to moisture, or even total immersion in water, does not significantly effect the mechanical or optical properties of acrylic. Most commercial acrylics have been UV stabilized for good weatherability and resistance prolonged sunlight exposure.

Acrylics are unaffected by aqueous solutions of most laboratory chemicals, by detergents, cleaners, dilute inorganic acids, alkalies, and aliphatic hydrocarbons -- however, acrylics are NOT recommended for use with chlorinated or aromatic hydrocarbons, esters, or ketones.

Acrylics are easily sawed, drilled, milled, engraved, and finished with sharp carbide-tipped tools. Cut surfaces may be readily sanded and polished. They are also readily bend or thermoformed at low temperature and solvent bonding of properly fitting parts produces a strong, invisible joint. Acrylics are available in colorless clear as well as a wide variety of colors and tints. They are available in extruded and/or cast material in sheet, rod and tube forms as well as custom profiles.

TYPICAL APPLICATIONS
Acrylic is an economical, general purpose material used in a wide variety of applications, including: • store fixtures and displays   • lenses and lighting fixtures   • light pipes   • windows and skylights   • sight gauges   • furniture   • outdoor signs   • sculpture  

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TYPICAL PROPERTIES of ACRYLIC PMMA

ASTM or UL test Property Acrylic
PHYSICAL
D792 Density (lb/in³)
(g/cm³)
0.043
1.18
D570 Water Absorption, 24 hrs (%) 0.3
MECHANICAL
D638 Tensile Strength (psi) 8,000 - 11,000
D638 Tensile Modulus (psi) 350,000 - 500,000
D638 Tensile Elongation at Break (%) 2
D790 Flexural Strength (psi) 12,000 - 17,000
D790 Flexural Modulus (psi) 350,000 - 500,000
D695 Compressive Strength (psi) 11,000 - 19,000
D695 Compressive Modulus (psi) -
D785 Hardness, Rockwell M80 - M100
D256 IZOD Notched Impact (ft-lb/in) 0.3
THERMAL
D696 Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)
5 - 9
D648 Heat Deflection Temp (°F / °C)
at 264 psi

150-210 / 65-100
D3418 Melting Temp (°F / °C) 265-285 / 130-140
- Max Operating Temp (°F / °C) 150-200 / 65-93
C177 Thermal Conductivity
(BTU-in/ft²-hr-°F)
(x 10-4 cal/cm-sec-°C)

3.9
1.2
UL94 Flammability Rating -
ELECTRICAL
D149 Dielectric Strength (V/mil) short time, 1/8" thick 400
D150 Dielectric Constant at 60 Hz 4.0
D150 Dissipation Factor at 60 Hz 0.05
OPTICAL
- Light Transmission, minimum (%) 92
- Refractive Index 1.48-1.50
NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets.
All values at 73°F (23°C) unless otherwise noted.
ACRYLITE is a trademark of Cyro Industries.
PLEXIGLAS is a registered trademark of Altuglas International / Arkema.
LUCITE is a trademark of ICI Acrylics Inc.

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Boedeker Plastics, Inc.
904 West 6th Street, Shiner, Texas 77984 USA
USA TOLLFREE : 1-800-444-3485
Phone: 1-361-594-2941     Fax: 1-361-594-2349     E-Mail: info@boedeker.com

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