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Carbon fiber is a lighter and stronger material to use and would theoretically be an ideal material to use for a football helmet. The problem is that carbon fiber has poor impact resistance.

The University and Oregon University worked on a project to make a complete uniform out of carbon fiber. Article below.

http://www.carbonfiberguru.com/2010/01/23/oregons-carbon-fiber-footbal-helmets/

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Q: Why isn't carbon fiber used to make footballll helmets even thought it is stronger and lighter than polycarbonate the standard material for footballll helmet shells?
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