4 ms·
As "hga" mentioned penny is made with zinc with a copper. 97.5% zinc core, 2.5% copper plating From http://en.wikipedia.org/wiki/Penny_%28United_States_coin%29
by awa 17y ago
As "hga" mentioned penny is made with zinc with a copper. 97.5% zinc core, 2.5% copper plating
From http://en.wikipedia.org/wiki/Penny_%28United_States_coin%29#History_of_composition http://en.wikipedia.org/wiki/Penny_%28United_States_coin%29#...