Lexan Polycarbonate Sheets offer high impact strength

Polycarbonate plastic products offer a balance of helpful features which include temp resistance, impact resistance and optical properties position polycarbonates between commodity plastics and engineering materials.
Polycarbonate is a very durable material. Though it has considerable impact-resistance, it has got low scratch-resistance and so a hard coating may be applied to polycarbonate eye wear as well as polycarbonate exterior vehicle components. The properties of polycarbonate are similar those of Acrylic PMMA materials, but polycarbonate is stronger, it is usable in a wider temperature range and is a bit more expensive. This plastic polymer is highly transparent to visible light and it has better light transmission characteristics than many different types of glass.
Polycarbonate has a glass transition temperature near 150 °C (302 °F), therefore it softens slowly above this point and flows above about 300°C (572 °F). Tools must be held at high temperatures, generally above 80 °C (176 °F) to help with making strain- and reduced stress products.
Unlike almost all other thermoplastics, polycarbonate can undergo dramatic changes in basic shape without cracking or breaking. Therefore, it is sometimes processed and formed   without needing to be heated using sheet metal techniques, such as forming bends with a brake. For even sharp angle bends with a tight radius, no heating is usually necessary. This makes it valuable in prototyping applications where transparent or electrically non-conductive parts are needed, which can't be created from sheet metal. Keep in mind that PMMA/Plexiglas, that is similar in looks to polycarbonate, but it's brittle and can't be bent with out a heating process.
Polycarbonate is frequently utilized in eye protection, along with other projectile-resistant optical type applications that would normally indicate the use of glass, but require much greater impact-resistance. Many kinds of lenses are produced from polycarbonate, including automotive headlamp lenses, lighting lenses, sunglass/eyeglass lenses, swimming and SCUBA goggles, and safety goggles for use in sporting helmets/masks and police riot gear. Windscreens in small motorized vehicles are normally fabricated from polycarbonate, such as for motorcycles, ATVs, golf carts, and small planes and helicopters.

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