Bayer Makrolon Polycarbonate Flat Sheet are clear and tough

Polycarbonate plastic products have a balance of helpful features which include high temperature resistance, impact resistance and optical properties position polycarbonates in between commodity plastic materials and engineering plastics.
Polycarbonate is a very tough material. Whilst it has significant impact-resistance, it has reduced scratch-resistance and thus a hard coating can be applied to polycarbonate eye protection lenses as well as polycarbonate exterior vehicle equipment. The properties associated with polycarbonate tend to be comparable to those of Acrylic PMMA materials, although polycarbonate is definitely 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 many kinds of glass.
Polycarbonate carries a glass transition temperature of around 150 °C (302 °F), therefore it softens gradually above this point and flows above about 300°C (572 °F). Tools must be held at higher temperatures, generally above 80 °C (176 °F) to help with making strain- and stress-free products.
Unlike almost all other thermoplastics, polycarbonate can undergo massive deformations without cracking. For that reason, for small changes in shape, it can be processed and formed   at room temperature 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 attractive prototyping applications where transparent or electrically non-conductive parts are essential, which can not be made from sheet metal. Remember that PMMA/Plexiglas, which is similar in looks to polycarbonate, but it is brittle and cannot be bent without heating.
Polycarbonate is frequently found in eye protection, along with other projectile-resistant see through applications that would normally require the use of glass, but require greater impact-resistance. Many different types of lenses are created from polycarbonate, including automotive headlamp lenses, lighting lenses, sunglass/eyeglass lenses, swimming and SCUBA goggles, and safety glasses for use in sporting helmets/masks and police riot gear. Windscreens in small motorized vehicles are commonly fabricated from polycarbonate, such as for motorcycles, ATVs, golf carts, and small planes and helicopters.

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