Ductility can be quantified by the fracture strain, which is the engineering strain at which a test specimen fractures during a uniaxial tensile test. Another commonly used measure is the reduction of area at fracture.The ductility of steel varies depending on the alloying constituents.his tensile test of a nodular cast iron demonstrates low ductility. In materials science, ductility is a solid material's ability to deform under tensile stress; this is often characterized by the material's ability to be stretched into a wire.
Spacer fabric is a specialized three-dimensional textile that uniquely facilitates air flow, breathability and lightweight shape support.pacer fabric is a specialized three-dimensional textile that uniquely facilitates air flow, breathability and lightweight shape support.
spacer (plural spacers) ( 1 sometimes science fiction) A person who works or lives in space. 2  An object inserted to hold a space open in a row of items, e.g. beads or printed type. 3  A bushing. ( slang) A forgetful 1  person. (medicine) A type of add-on device used by an asthmatic person to increase the effectiveness of a metered-dose inhaler.