User blog comment:Wolfenmaus/Strongest Material in the Universe/@comment-5972189-20130109180001/@comment-5972189-20130109185432

"Techniques have been developed to produce nanotubes in sizeable quantities, including arc discharge, laser ablation, high-pressure carbon monoxide disproportionation (HiPco), and chemical vapor deposition (CVD). Most of these processes take place in vacuum or with process gases. CVD growth of CNTs can occur in vacuum or at atmospheric pressure. Large quantities of nanotubes can be synthesized by these methods; advances in catalysis and continuous growth processes are making CNTs more commercially viable."

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Strongest material in the universe is quite misleading >.>

Diamond has a tensile strength of at least 60 GPa also.

I wouldn't doubt that it is the strongest biological material in the world though (who knows what else is in the universe).