Modern dimes contain no silver. After the Coinage Act of 1965, silver was removed from the dime's makeup. The present dime is made up of 75 percent copper and 25 percent nickel.
From 1796 to 1837, the dime was made up of 89.24 percent silver and 10.76 percent copper. The silver content was raised as high as 90 percent with the introduction of the Liberty Seated dime. Since 1992, the US Mint offers Silver Proof sets that contain dimes composed of the pre-1965 standard of 90 percent silver and 10 percent copper for collectors to purchase and not for circulation.