Acrylic is a transparent thermoplastic polymer known by its chemical name, polymethyl methacrylate (PMMA). As a thermoplastic, acrylic can be heated, shaped, and reformed multiple times without degrading — a property that makes it incredibly versatile for fabrication and manufacturing.

You might recognize acrylic by some of its popular brand names: Plexiglas®, Lucite®, Perspex®, or Acrylite®. These are all acrylic plastic, just manufactured by different companies. Think of it like Kleenex versus tissue — they're the same material, just with different brand names.

Acrylic was first developed in 1928 and commercialized in 1933 in Germany. During World War II, it found its first major application in aircraft canopies and gun turrets, where its combination of clarity, light weight, and shatter resistance proved invaluable. Today it's a multi-billion dollar global industry.

At Plastic-Craft, we stock both cast and extruded acrylic in thicknesses ranging from 0.060″ to 4″, with clear, colored, and specialty grades available for immediate shipment.

Optical Clarity: 92% light transmission rate — actually higher than glass (90%). Refractive index of 1.49 provides crystal-clear views without distortion. Maintains clarity for decades, even outdoors.

Impact Resistance: 10 to 20 times more impact-resistant than standard glass. Tensile strength of approximately 10,000 psi. When it does break, it fractures into large, dull-edged pieces rather than dangerous shards.

Weather Resistance: Excellent UV stability with 10 to 30 year outdoor lifespan depending on grade. Usable temperature range from -40°F to 160°F for continuous use. UV-stabilized grades offer even longer lifespans.

Lightweight: Density of 1.19 g/cm³ — approximately half the weight of glass (2.5 g/cm³). A 1/4″ thick 4′x8′ acrylic sheet weighs around 50 pounds versus 100 pounds for equivalent glass.

Workability: Can be cut with standard woodworking tools, heat-bent at 290-320°F, bonded with solvent cement through chemical welding, laser-cut, CNC routed, engraved, and polished to optical clarity.

Chemical Resistance: Resists water, dilute acids, alkalis, salt solutions, and aliphatic hydrocarbons. Attacked by aromatic hydrocarbons, ketones (acetone), alcohols, and strong acids. Windex-type cleaners work fine, but acetone will dissolve it.

Retail and POP Displays: Display cases, product risers, cosmetic organizers, and menu boards — acrylic's crystal clarity showcases products effectively, and its lightweight nature makes it ideal for hanging displays.

Architectural and Glazing: Windows, skylights, interior partitions, decorative wall panels, and stair railings. At half the weight of glass with superior shatter resistance, acrylic provides architects with design flexibility.

Aquariums and Marine: Large viewing panels manufactured in monolithic pieces impossible with glass. Boat windshields, hatch covers, and marine instrument covers benefit from saltwater resistance and complex shape forming.

Medical and Laboratory: Incubators, isolators, protective barriers, and equipment housings using FDA-compliant grades. Chemical resistance, sterilizability, and transparency make it ideal for observation-critical environments.

Protective Barriers: Sneeze guards, food shields, machine guards, and hockey rink dasher boards — clear visibility with impact resistance far superior to glass.

Signage and Graphics: Illuminated signs, letter sets, dimensional signage, and trade show graphics. Laser-cut, edge-lit, and formed into virtually any shape.

ASTM Standards: Sheet specifications under ASTM D4802 (MC for cast, GP for extruded). Testing per ASTM D638 (tensile), ASTM D256 (impact), ASTM D648 (heat deflection).

Dimensions: Thickness tolerances: Cast ±10% (up to 1/4″), ±5% (thicker); Extruded ±15-20%. Standard sheets 4′x8′ up to 10′x12′. Thickness range 0.060″ to 4″.

Thermal: Glass transition 221°F (105°C). Heat deflection 203°F at 264 psi. Forming range 290-320°F. Thermal expansion 4-5x glass.

Mechanical: Tensile strength 10,000-11,000 psi. Flexural strength 15,000-17,000 psi. Izod impact 0.4-0.5 ft-lb/in. Rockwell hardness M85-100.

Certifications: FDA-compliant grades for indirect food contact. Some grades NSF-51 certified. UL 94 HB flammability rating. REACH and RoHS compliant. Plastic-Craft maintains material certifications and provides test reports on request.

Freshly cut acrylic edges can be sharp — handle with care and wear gloves when necessary. Acrylic is combustible and rated HB (horizontal burn) under UL 94; it should not be used near open flames or high-heat sources. When handling large sheets, always provide adequate support to prevent flexing and potential cracking.