ductility - derived from latin from ducere (pull, lead, lead) - is the ability or also the behavior of a material to be inclined under effect of outside forces to the plastic and thus durable deformation without with it material separations arise. Such a material is goodcoldly ductile: e.g. by deep-drawing, bending or straining.
- In geology the term for rocks is used in particular the lower continental earth's crust, which under tectonic stress not inflexibly, but plastic to distort itself.
- With the examination from bitumen a sample becomes inso-called Duktilometer clamped and pulled apart, until the bitumen thread developing thereby tears. The length of the thread at the time of tearing up is called ductility of the bitumen.