The dressing of metal strip edges by rolling, filing or drawing. Because of relatively high cost, only tool steels and other high-value steels are made by the electric furnace process. An anodic treatment. It is very extensively used in industry and is continuing to enlarge its useful functions. This is usually expressed as a percentage of the original length and is a measure of the ductility of the metal.
Readings are in millimeters.
In metallography, the process of revealing structural details by the preferential attack of reagents on a metal surface. Steels with less than this quota of carbon are known as hypo-eutectoid and contain free ferrite in addition to the pearlite. When more carbon is present, the steel is known as hyper-eutectoid and contains free cementite. The presence of certain elements, such as nickel or chromium, lowers the eutectoid carbon content. Carbon content about 1.00, Chromium .17.