Sheffield Plastics Polycarbonate Sheets are clear and tough

Makrolon Polycarbonate materials have a great blend of useful features this includes temp resistance, impact resistance and optical properties position polycarbonates in between commodity plastic materials and engineering plastic materials.
Polycarbonate is definitely a tough material. Even though it has considerable impact-resistance, it has minimal scratch-resistance and so a hard coating could be applied to polycarbonate eyeglasses lenses and polycarbonate exterior automotive components. The properties of polycarbonate tend to be comparable to those of common Acrylic materials, although polycarbonate is always 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 has better light transmission characteristics than most grades 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 need to be held at high temperatures, generally above 80 °C (176 °F) to help make strain- and almost stress free products.
Unlike most other thermoplastics, polycarbonate can undergo dramatic changes in basic shape without cracking or breaking. For this reason, it may be processed and formed   cold using standard sheet metal techniques, for instance forming bends with a brake. For even sharp angle bends having a tight radius, no heating is usually necessary. This makes it valuable in prototyping applications where transparent or electrically non-conductive parts are necessary, which should not be produced from sheet metal. Keep in mind that PMMA/Plexiglas, which happens to be similar in appearance to polycarbonate, but it is brittle and cannot be bent without heating.
Polycarbonate is often found in eye protection, along with other projectile-resistant see through or lighting applications that would normally require the use of glass, but require higher impact-resistance. Many different types of lenses are manufactured 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 produced from polycarbonate, such as for motorcycles, ATVs, golf carts, and small planes and helicopters.

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