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Acrylic, also known as Polymethyl Methacrylate or PMMA is a clear thermoplastic material often used as a light weight substitution for glass.

PMMA is a durable and lightweight material. It has a density of 1.17 - 1.20 g/cm³, which is less than half that of glass. It also has great impact strength, higher than both glass and polystyrene; though PMMA's impact strength is still considerably lower than polycarbonate and some engineered polymers.

PMMA transmits up to 92% of visible light (3 mm thickness), and gives a likeness of about 4% from each of its surfaces on account of its refractive index (1.4914 at 587.6 nm). It filters ultraviolet (UV) light at wavelengths below about 300 nm.

PMMA swell up and dissolves in many organic solvents; it also has poor resistance to many other chemicals. Its environmental constancy is superior to other plastics such as polystyrene and polyethylene, and PMMA is therefore often the material of choice for outdoor applications.

PMMA has a maximum water absorption ratio of 0.3 - 0.4% by weight. Tensile strength decreases with increased water absorption. Its coefficient of thermal expansion is relatively high at (5-10) x 10-5 /K.
Unit of Measure

Size

N/A 7/16 in

Color

N/A Clear

Material Resin

N/A Acrylic

Tolerance (±)

N/A 0.002 in

Bead Finish

N/A Polished

Density

N/A 1.19 g/cm³

Max Operating Temperature

N/A 65 to 93 ºC

Tensile Strength

N/A 8120 psi

Durometer/Hardness Rating

N/A M80 to M100

Acrylic Resistance

N/A
  • Excellent resistance to Mineral Oils
  • Good resistance to Dilute Acids, Aldehydes and Aliphatic Hydrocarbons
  • Limited resistance to Bases
  • Poor resistance with Concentrated Acids, Alcohols, Esters, Aromatic and Halogenated Hydrocarbons, Ketones, Vegetable Oils and Oxidizing Agents.

Acrylic Quick Facts

N/A
  • Maximum Temperature: 194ºF 90ºC
  • Minimum Temperature: -76ºF -60ºC
  • Autoclavable: No
  • Melting Point: 212ºF 100ºC
  • Tensile Strength: 7,000 psi
  • Hardness: R120
  • UV Resistance: Good
  • Clear
  • Rigid
  • Specific Gravity: 1.18

Acrylic Fabrication

N/A
  • Nearly crystal clear, Acrylic is an excellent choice for display cases, vitrines, and point of purchase items
  • Thicker Acrylic material can shield against beta radiation
  • Available in a variety of forms and colors
  • Machinable and heat-bendable
  • Acrylic can be solvent bonded
  • Extruded acrylic can be flame polished to obtain a glass-like finish
  • Applications include aquariums, picture frames, shelves, and cabinets

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