An ability to change shape drastically without breaking. The capacity of a metal to be hammered into a thin sheet or drawn into a fine wire. Back to the Top Exchange of Futures for Physicals (EFP) â€” A futures contract provision involving an agreement for delivery of physical product that does not necessarily conform to contract specifications in all terms from one market participant to another and a concomitant assumption of equal and opposite futures positions by the same participants at the time of the agreement. Back to the Top Face Value â€” The monetary value worth of a coin. This does not necessarily correspoind to its actual worth. For example, a pre-1965 U.S. half dollar has a face value of $0.50 but its intrinsic value is tied to the price of silver and much higher.
Refers to the amount of deformation a material experiences before complete structural failure. The greater the ductility, the more abuse the metal will take prior to failure. This is not to be confused with strength.
Ductility generally refers to the amount of inelastic deformation which a material or structure experiences before complete failure. Quantitatively, ductility can be defined as the ratio of the total displacement or strain at failure, divided by the displacement or strain at the elastic limit.
A measure of the permanent stretching or deformation a material can take prior to failure. Ceramics have no ductility, while materials such as stainless steel and aluminum exhibit large ductilities, often measured at 60% stretch or elongation prior to failure.
The property of metal which permits it to be reduced in cross sectional area without fracture. In a tensile test, ductile metals show considerable elongation eventually failing by necking, with consequent rapid increase in local stresses.
The measurement of a metals ability to bend or deform from stresses supplied by external forces before fracturing. The measurement is defined by elongation and reduction of area performed on a tension test.