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Smiths Metal Centres Acrylic PMMA

Smiths Metal Centers Acrylic PMMA is an amorphous thermoplastic which is optically transparent, unaffected by moisture, and offers a high strength-to weight ratio. Common trade names for this material include Plexiglas®, Acrylite® and Lucite®. Acrylics are not recommended for use with chlorinated or aromatic hydrocarbons, esters or ketones. However, the material is unaffected by aqueous solutions of most detergents, acids, alkali’s and laboratory chemicals. It is both a thermoplastics and transparent plastic and is often used as an alternative to glass, but should not be used in structural applications due to poor impact resistance.

Polymer Name: Polymethyl Methacrylate (PMMA)

Physical Form: Rods, Sheets, Tube

Features: Amorphous, Clarity, Good Abrasion Resistance, Good Weather Stability, High Optical Transparency, High Strength to Weight Ratio, Low Smoke Emission, Low Water Absorption, Stiffness, Thermally Insulating, UV Resistant

Tensile Modulus: 2411.5 - 3445.0 MPa

Color: Transparent

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Technologies

Features & Benefits

Key features
  • Good insulation properties
  • UV resistant
  • Low smoke emissions
  • Good stiffness & abrasion resistance
  • Clear / colourable - excellent clarity
  • Good weatherability
  • Low water absorption
  • Good insulation properties

Applications & Uses

Typical Applications
  • Master cylinders
  • Water tank liners
  • Liquid chemical pumps
  • Dashboard lighting
  • Motorcycle helmet visors
  • Hard contact lenses
Usability

Easily drilled, milled, engraved and finished with sharp carbide-tipped tools. Cut surfaces may be readily sanded and polished.

Properties

Physical Form
Mechanical Properties
ValueUnitsTest Method / Conditions
Tensile Strength8000 - 11000psi-
Tensile Modulus350000 - 500000psi-
Tensile Elongation at Break2.0%-
Flexural Strength12000 - 17000psi-
Flexural Modulus350000 - 500000psi-
Compressive Strength11000 - 19000psi-
HardnessM80 - M100Rockwell-
Izod Notched Impact0.3ft-lb/in-
Thermal Properties
ValueUnitsTest Method / Conditions
Coefficient of Thermal Expansion5 - 9x 10^⁻⁵ in./in./°F-
Heat Deflection Temperature (264 psi)150 - 210 / 65 - 100psi-
Melting Temperature130 - 140°C-
Operating Temperaturemax. 65 - 93°C-

Regulatory & Compliance

Certifications & Compliance

Packaging & Availability

Availability

Sheet, rod and tube.