Lexan Polycarbonate Sheet are clear and tough

Polycarbonate products have a unique balance of helpful features this includes high temperature resistance, impact resistance and optical properties position polycarbonates in between commodity plastics and engineering materials.
Polycarbonate is a very sturdy material. Whilst it features high impact-resistance, it's got a lower scratch-resistance and so a hard coating can be applied to polycarbonate eyeglasses lenses and polycarbonate exterior motor vehicle components. The properties of polycarbonate are along the lines of those of Acrylic PMMA materials, but polycarbonate is actually 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 approximately 150 °C (302 °F), as a result it softens slowly above this point and flows above about 300°C (572 °F). Tools ought to be held at warm to high temperatures, generally above 80 °C (176 °F) to help make strain- and reduced stress products.
Unlike many thermoplastics, polycarbonate can undergo large changes in basic shape without breaking. For this reason, it may be processed and formed   at room temperature using standard sheet metal techniques, for instance forming bends with a brake. Even for sharp angle bends with a tight radius, no heating is generally necessary. This makes it useful for prototyping applications where transparent or electrically non-conductive parts are required, which may not be created from sheet metal. Be aware that PMMA/Plexiglas, that is similar in appearance to polycarbonate, but it is brittle and can't be bent without heating.
Polycarbonate is often utilized in eye protection, and also in other projectile-resistant see through applications that would normally indicate the use of glass, but require much greater impact-resistance. Several types of lenses are manufactured 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 normally manufactured from polycarbonate, such as for motorcycles, ATVs, golf carts, and small planes and helicopters.

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