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.
1 Seersucker does not refer to the fabric, but to a certain structure of fabric. 2  It is usually made of cotton, but can be made from rayon or other synthetics. 3  It has a puckered style so that it lifts off your skin and lets air circulate.  Cotton seersucker is very breathable and cool in the summer.