Bayer Makrolon Polycarbonate Sheet are clear and tough

Polycarbonate materials give you a balance of beneficial features this includes temperature resistance, impact resistance and optical properties position polycarbonates between commodity plastics and engineering materials.
Polycarbonate is a very high quality material. Though it has exceptional impact-resistance, it has got a lower scratch-resistance and so a hard coating is applied to polycarbonate eye wear and polycarbonate exterior automotive equipment. The characteristics of polycarbonate are generally along the lines of those of polymethyl methacrylate (PMMA, acrylic), 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 it has better light transmission characteristics than several types of glass.
Polycarbonate carries a glass transition temperature of around 150 °C (302 °F), consequently it softens gradually above this point and flows above about 300°C (572 °F). Tools need to be held at warm to high temperatures, generally above 80 °C (176 °F) to help with making strain- and reduced stress products.
Unlike most thermoplastics, polycarbonate can undergo massive shape changes without breaking. As a result, it may be processed and formed   cold using sheet metal techniques, for instance forming bends with a brake. Even for 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 needed, which should not be produced from sheet metal. Note that PMMA/Plexiglas, which happens to be similar in looks to polycarbonate, but it is brittle and cannot be bent unless it is heated.
Polycarbonate is often used in eye protection, as well as in other projectile-resistant see through or lighting applications that would normally require the use of glass, but require much greater impact-resistance. Several types of lenses are made of 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 typically produced from polycarbonate, such as for motorcycles, ATVs, golf carts, and small planes and helicopters.

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