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Alloys are usually designed to have properties that are more desirable than those of their components. For instance, steel is stronger than iron, one of its main elements, and brass is more durable than copper, but more attractive than zinc.

Unlike pure metals, many alloys do not have a single melting point. Instead, they have a melting range in which the material is a mixture of solid and liquid phases. The temperature at which melting begins is called the solidus, and that at which melting is complete is called the liquidus . Special alloys can be designed with a single melting point, however, and these are called eutectic mixtures.

Sometimes an alloy is just named for the base metal, as 14 karat gold is an alloy of gold with other elements. The same holds for silverThis page is about Silver the element. For the color, see Silver Silver is a chemical element in the periodic table that has the symbol Ag ( L. Argentum and atomic number 47. A soft white lustrous transition metal, silver has the highest electrical and th used in jewelleryJewellery (spelled jewelry in American English) consists of ornamental devices worn by persons, typically made with gems and precious metals. Costume jewellery is made from less valuable materials. However, jewellery can and has been made out of almost ev, and aluminiumAluminium (or aluminum in North American English) is the chemical element in the periodic table with the symbol Al and atomic number 13. A silvery and ductile member of the poor metal group of elements, aluminium is found primarily as the ore bauxite and used structurally.

Alloys include:

• amalgamAn amalgam is an alloy of mercury. Most metals are soluble in mercury, but some (such as iron) are not. Amalgams are commonly used in dental fillings. Amalgam in Dentistry For centuries dentists have been cleaning out decay and filling cavities, using fil
• brass
• bronzeBronze is the traditional name for a broad range of alloys of copper, usually with zinc and tin but not limited to those metals. First used during the Bronze Age, to which it gave its name, bronze made tools, weapons and armor that were either harder or m
• duraluminDuralumin (or duraluminum is an alloy of aluminium (about 95%), copper (about 4%), and small amounts of magnesium (0. 5% 1%) and manganese (less than 1%). It is considerably stronger than elemental aluminium, and more resistant to corrosion. This alloy al
• electrumElectrum is a naturally occurring alloy of gold, silver, and lesser amounts of copper. It has a pale yellow color, and was used in some of the earliest coins in the world. Composition Most commonly, electrum consists of approximately 75% gold, the remaind
• intermetallics
• Mu-metalMu-metal is a nickel- iron alloy (77% nickel, 15% iron, plus copper and molybdenum) that is very efficient for screening magnetic fields. It is used to shield vacuum chambers for experiments with low-energy electrons, to shield magnetic resonance imaging
• pewter
• solder
• spiegeleisen
• stainless steel
• steel

See also

• list of alloys
• metallurgy
• Alloys

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Topics: Alloy Alloys Melting Called Components Elements Steel Gold...

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