ductile definition
ductile means a rock that is able to sustain 5-10% deformation before fracturing or faulting.
ductile means that you can form them into wires such
ductile means the capability of a material, structural element or system of elements, to undergo a limited number of repeated and reversing cycles of inelastic (post-yield) deformations while maintaining a substantial proportion of its elastic design load capacity;