COMPOSITION AND PHYSICAL PROPERTIES OF ALLOYS Updated August 18, 2007 Composition and Physical Properties of Alloys The following tables present the composition and physical properties of many common alloys. All compositions are given in mass per cents. For example, 50Bi, 25Pb, 12.5Sn, 12.5Cd means 50% Bi, 25% Pb, 12.5% Sn and 12.5% Cd, all by mass. This page contains the composition of common alloys, the name, specific gravity, coefficient of thermal expansion and melting point. Most engineering metallic materials are alloys. Metals are alloyed to enhance their properties, such as strength. The chemical composition (%Si) and the cooling. There is a main table immediately below and a supplementary table below that. The tables may contain errors. If the you detect an error please respond to the e-mail address at the bottom of the second table so that the error can be corrected. This table is in the public domain. ![]() Users are encouraged to copy and to distribute it without restriction. Composition Name Sp. Gr Th.exp.coeff/deg. ![]() Main articles: and • AA-8000: used for electrical building wire in the U.S. Per the, replacing AA-1350. • (2.45% ): aerospace applications, including the Space Shuttle • (, ): used for permanent magnets • (, ): used in car bodies, mainly used by cars. • () • or R.R. Alloys (2% copper,, nickel): used in aircraft pistons • (up to 12% magnesium, 1% manganese): used in shipbuilding, resists seawater corrosion • (3.5% magnesium, 0.3% manganese): formerly used to make coinage of the Italian lira • (5-50% ): used in airplane bodies, ladders, pyrotechnics, etc. • () • (4% copper, nickel, magnesium) also forms, like β–Al–Mg, ξ'–Al–Pd–Mn, and T–Al 3Mn. O re piya song mp3. Beryllium [ ]. • The purity of alloys is expressed in, (UK: carats) which indicates the of the minimum amount of gold (by ) over 24 parts total. 24 karat gold is (24/24 parts), and the engineering standard [ ] is that it be applied to alloys that have been refined to 99.9% or better purity ('3 nines fine'). There are, however, places in the world that allow the claim of 24kt. To alloys with as little as 99.0% gold ('2 nines fine' or 'point nine-nine fine). [ ] An alloy which is 14 parts gold to 10 parts alloy is 14 karat gold, 18 parts gold to 6 parts alloy is 18 karat, etc. This is becoming more commonly [ ] and more precisely expressed as a decimal fraction, i.e.: 14/24 equals.585 (rounded off), and 18/24 is.750 ('seven-fifty fine'). There are hundreds of possible alloys and mixtures possible, but in general the addition of silver will color gold green, and the addition of copper will color it red. A mix of around 50/50 copper and silver gives the range of yellow gold alloys the public is accustomed to seeing in the marketplace. References [ ].
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