Animal World

Arthropods: Crustaceans, Insects, and Spiders

Which is stronger—steel or the silk from a spider’s web?

Spider silk is stronger. Well known for its strength and elasticity, the strongest spider silk has tensile strength second only to fused quartz fibers and five times greater than that of steel of equivalent weight. Tensile strength is the longitudinal stress that a substance can bear without tearing apart.


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