The mathematical ratio between the diameter of a ring (inner diameter) and the diameter of the wire from which it is made. Often referred to as 'a.r.' or 'AR'. Formula: AR = Ring Inner Diameter/Wire Diamater
American Wire Guage (AKA Browne & Sharpe) - Somewhat obsolete American(US) wire measurement standard still used for non-ferrous wire and intended for electrical use. Based on electrical resistance in a wire, such that each successive number has twice the resistance of the number below it.
Aspect Ratio The mathematical ratio between the diameter of a ring (inner diameter) and the diameter of the wire from which it is made. Often referred to as 'A.R.' or 'AR'. Formula: AR = Ring Inner Diameter/Wire Diamater
A phase of steel in which the metal is in a solid solution. Austenite is stable only above 1333°F in plain carbon steels. Alloying elements aid in stabilization of the form at low temperatures.
A heat treatment for metals, primarily used to induce softness in the material. Annealing also refines the crystalline structure, removes stresses, and changes electro-magnetic properties of ferrous metals.
Process of creating an oxide layer on the surface of a metal by anodic treatment. Generally used on niobium, titanium, and aluminum. Results in a thin film of oxide that is often harder than the unoxidized metal beneath, and which can be manupulated via thickness to produce desired colors. In the case of aluminum, dyes can be used to color this layer.