Polycarbonate is a durable material. Although it has high impact-resistance, it has low scratch-resistance. Therefore, a hard coating is applied to polycarbonate eyewear lenses and polycarbonate exterior automotive components. The characteristics of polycarbonate compare to those of polymethyl methacrylate (PMMA, acrylic), but polycarbonate is stronger and will hold up longer to extreme temperature. Polycarbonate is highly transparent to visible light, with better light transmission than many kinds of glass.

 

 

 

Impact resistance ; chainshot:

For some species of wood the speed of the chain-saw is increased which causes in the event of a chain-saw shot. An impact force and characteristic of the chain-saw shot which is comparable with those of a military bullet.
See images on the right of a chain-saw shot of only 576 km/h , on 12mm sheet at –40C . The failure however is still ductile . For some conditions a laminate of multiple PC solutions are needed . This is related to the speed and weight of the chainsaw particle hitting the glazing under extreme cold conditions.