Aluminium scrap are avaiable in various quality and forms; they are identified by trading names...
The scrap copper are available in various types, identified by trade names (different from country to...
Aluminium alloys are traded on London Metal Exchange (LME) and its contract is conforming to...
High Grade primary aluminium is quoted on London Metal Exchange (LME). Its contract specifies a...
Metals
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The chemistry informally defines base metals how those metals that oxidize and/or corrode quite easily. Historically are metals that are the opposite of precious metals or precious metals. The ancient alchemists had the goal of transforming base metals into precious metals. Commercially, the base metals include all non-ferrous metals and iron.
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Pure aluminium is a silvery-white metals with very interesting properties: it is light, nontoxic (as metal), nonmagnetic and nonsparking, easily formed, machined, and cast. Pure aluminium is soft and lacks strength, but alloys with small amounts of 
Iron is a lustrous, ductile, malleable and gray-silver. Rusts in contact with moist air, but not in dry air.Iron exists in four distinct crystalline forms. It is the most widely used metal, constituting about 95% of all the metal produced in the world. The characteristics that make it so used are: low cost and high strength.
Nickel is found as a component in most meteorites and often serves as a criterion for distinguishing a meteorite from other minerals. The iron meteorites, or "siderites", may contain iron alloyed with from 5 to almost 20% of nickel. The 5-cent American coin (whose nickname is "nickel") contains only 25% of nickel. Nickel is a silvery white metal that takes a high shine.
The lead is a lustrous, bluish-white. It is very soft, highly malleable, ductile and a poor conductor of electricity. It is very resistant to corrosion, but it oxidizes and turns black when exposed to air. Alloys include pewter and solder.
Copper is one of the metals most important. It is a brilliant reddish metallic luster, it is malleable, ductile, it is a good conductor of heat and electricity (second only to 
The tin is a silvery-white metal, it is malleable, somewhat flexible and with a crystalline structure. Because of the breaking of these crystals, when a curved bar to hear the "cry of tin". The element has two allotropic forms. From gray, heating it to 13.2 degrees Celsius, it becomes the ordinary form of the white metal.
Zinc, also called spelter, has a bluish-white color, it is bright and non-magnetic. If most of the business qualities have a matte finish, the most common compounds of zinc and is white (when liquid it is colorless).