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Pennies are supposed to be all copper through 1981. In 1982 some are and some are not, and after 1982 all are clad.

CorrectionThe last 100%-copper cents were struck in 1857. Since then the composition of the cent has been changed many times, starting with a copper-nickel alloy from 1857 to 1864, then various varieties of bronze (95% copper), steel (1943), and eventually copper-plated (not clad) zinc beginning in mid-1982.
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Q: What dates of us pennies are not all copper?
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Is copper a coinage metal?

Yes, Copper is used in us Pennies.


Is a penny an magnet?

No. Pennies were made of copper (Now US pennies are made of copper plated zinc) Magnets are made of iron or other ferro-magnetic metals.


Are pennies made of mostly copper or zinc?

pennies are made of mostly zinc but have some copper in themMoreThe composition of US cents was changed from bronze in mid-1982. The coins now have a zinc core plated with copper (rather than mixed together). Zinc makes up 97.5% of the coin by weight.


Which pennies are magnetic?

It depends on which country we are talking about. For the US, there is only one magnetic coin the 1943 steel penny. For Canada, there have been some magnetic pennies made since 2000, though there were zinc pennies made until 2008. For the UK, pennies have been magnetic (copper plated steel) since 1992.


What are US pennies made from?

Since 1982 US cents have been made of copper-plated zinc. The Mint buys large rolls of zinc stock from metal suppliers. The stock is approximately the thickness of a finished cent, with slight differences to allow for changes during the striking process. The process starts a bit like baking cookies: the stock is unrolled (think of a giant roll of dough) and fed into a press that punches out circular blanks, similar to the way a cutter would press out blanks for making cookies. The blanks go through a process to clean them of debris and oils. Next they're fed into a machine that squeezes the edges slightly to produce the raised rim seen on all US coins. After that, the blanks are fed into hoppers that feed high-speed presses that strike the front and back images on each one. Finally the zinc coins are put into a chemical bath that deposits a layer of copper on the outside, both so that the coins look like their bronze predecessors and so that the underlying zinc won't corrode.