CNN's Max Foster reports. Limpet teeth have the webbing of our eight-legged chums beaten some five times over. To examine the tensile strength, the researchers used atomic force microscopy to pull apart a sample of limpet tooth material all the way down to the atomic level. As spider silk has a tensile strength only up to 4.5 GPa, limpet teeth outperforms spider silk to be the strongest biological material. Limpet teeth, they found, have one of highest known strengths—exceeding that of many engineering alloys even. Scientists have recently identified Earth’s new strongest known material: limpet teeth. Some scientists claim spider silk, and by extension sea snail teeth, are stronger than metals such as steel Researchers from the University of Portsmouth say they believe the teeth from a limpet are the strongest material in nature. But finding a practical material with a really high tensile strength has been the sticking point. Limpets are a plain but tenacious creature, resembling nothing more than ridged conical hats. The world's new strongest natural material: Limpet teeth. The amount of force it can withstand before … The strongest materials in the world: Limpet teeth beats record resistance of spider silk. The results of Barber’s research confirm that a limpet’s gnashers are stronger than spider silk – previously considered to be the strongest biological material on earth. Step aside, spider silk: the strongest material in the world can be found inside the mouths of rock-dwelling marine gastropods. Looking into limpet teeth of Patella vulgata, Vickers hardness values are between 268 and 646 kg m −1 m −2, while tensile strength values range between 3.0 and 6.5 GPa. Engineers find that limpets' tiny teeth are made of the strongest biological material ever tested. As a biological comparison, the tensile strength and elastic modulus of spider silk, the material currently consider to be the strongest in nature, can reach values of up to 4.5 and 10 GPa, respectively , which is considerably lower than the mechanical performance of the limpet tooth. The cable material had to be at least as strong as limpet teeth. NASA has since organized task forces to consider the idea. Clark suggested mono-crystalline silicon - which happens to be about the same strength as the strongest limpet teeth. Stronger than Kevlar, and surpassing even spider silk, the miniscule structure is found in a nondescript marine gastropod. As a biological comparison, the tensile strength and elastic modulus of spider silk, the material currently consider to be the strongest in nature, can reach values of up to 4.5 and 10 GPa, respectively , which is considerably lower than the mechanical performance of the limpet tooth. 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