<P> In the Middle East standard cans are 330 ml . </P> <P> Most metal beverage cans manufactured in the United States are made of aluminum, whereas in some parts of Europe and Asia approximately 55 percent are made of steel and 45 percent are aluminum alloy . Steel cans often have a top made of aluminum . The aluminum used in United States and Canada are alloys containing 92.5% to 97% aluminum, <5.5% magnesium, <1.6% manganese, <0.15% chromium and some trace amounts of iron, silicon and copper according to MSDS from aluminum producer Alcoa . Alloys used include 3004, 3105, or other 3xxx / 5xxx series aluminum . </P> <P> An empty aluminum can weighs approximately half an ounce (14.2 grams). There are 34 empty 12 ounce aluminum cans to a pound or 70 to a kilogram . </P> <P> In many parts of the world a deposit can be recovered by turning in empty plastic, glass, and aluminum containers . Scrap metal dealers often purchase aluminum cans in bulk, even when deposits are not offered . Aluminum is one of the most cost - effective materials to recycle . When recycled without other metals being mixed in, the can--lid combination is perfect for producing new stock for the main part of the can--the loss of magnesium during melting is made up for by the high magnesium content of the lid . Also, reducing ores such as bauxite into aluminum requires large amounts of electricity, making recycling cheaper than producing new metal . </P>

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