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ALLOY, or ALLAY. An inferior metal, used with gold. and silver in making coin or public money. Originally, it was one of the allowances known by the name of remedy for errors, in the weight and purity of coins. The practice of making such allowances continued in all European mints after the reasons, upon which they were originally founded, had, in a great measure, ceased. In the imperfection of the art of coining, the mixture of the metals used, and the striking of the coins, could not be effected with, perfect accuracy. There would be some variety in the mixture of metals made at different times, although intended to be in the same proportions, and in different pieces of coin, although struck by the same process and from the same die. But the art of coining metals has now so nearly attained perfection, that such allowances have become, if not altogether, in a great measure at least, unnecessary. The laws of the United States make no allowance for deficiencies of weight. See Report of the Secretary of State of the United States, to the Senate of the U. S., Feb. 22, 1821, pp. 63, 64.
     2. The act of Congress of 2d of April, 1792, sect. 12, directs that the standard for all gold coins of the United States, shall be eleven parts fine to one part of alloy; and sect. 13, that the standard for all silver coins of the United States, shall be one thousand four hundred and eighty-five parts fine, to one hundred and seventy-nine parts alloy. 1 Story's L. U. S. 20. By the act of Congress, 18th Feb. 1831, Sec. 8, it is provided, that the standard for both gold and silver coin of the United States, shall be such, that of one thousand parts by weight, nine hundred shall be of pure metal, and one hundred of alloy; and the alloy of the silver coins shall be of copper, and the alloy of gold coins shall be of copper and silver, provided, that the silver do not exceed one-half of the whole alloy. See also, Smith's Wealth of Nations, vol. i., pp. 49, 50.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in periodicals archive ?
One is named 3J53 in Chinese standard of metal materials, and the other is a new kind of metal alloy which is manufactured by ourselves.
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Carnegie Mellon University (CMU) recently announced that it, in conjunction with the Department of Energy's (DOE) National Energy Technology Laboratory (NETL), has developed a new computational modeling tool that could help determine the ability of candidate metal alloy separation membranes to produce pure hydrogen.
Process involves hard molten metal alloy plasma stream deposition applied to the surface of steel, aluminum, galvanized steel and stainless steel.
The coating is comprised of at least one electroplated layer and a color layer comprised of a refractory metal oxide or refractory metal alloy oxide wherein the oxygen content of the refractory metal oxide or refractory metal alloy oxide is a stoichiometric oxygen content layer on the color layer.
The tank uses a powdered metal alloy to absorb and store hydrogen in a significantly lower (1,500 psi) pressure environment than the 5,000-psi tanks currently in use, off he 10,000 psi tanks on the horizon.
These forceps employ a proprietary nonstick metal alloy. Unlike nonstick electrosurgical electrode coatings, SILVERGIide does not wear off or lose its nonstick properties overtime.
The end products are a glass-like slag, a heavy metal-enriched oxide and, in some cases, a metal alloy. Volatile metals are fumed off and captured in a baghouse, while non-volatile metals may be separated as a molten alloy.