Do you have a part that you are thinking about printing, but your are worried about the strength? MatterHackers has done some unscientific comparitive testing for you. You don’t need to be an engineer to understand the test. They printed some parts and tried to break them. Check it out.
link: http://www.matterhackers.com/news/filament-strength-testing
Simmer3D 
Decent read, thanks for sharing!
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