Yes and no. The way post-1964 dimes, half dollars and quarters are made is with copper-nickel. It is slightly possible that it was a defective blank and doesn't contain the copper layer, it is also possible that it could be struck on a blank intended for a penny. However, the most likely explanation is that someone stripped off the outer nickel coating leaving the copper core. Most likely it really isn't worth too much, but without seeing the coin in person, it isn't easy to say what it is.
A 1964 dime is made of 90% silver and 10% copper, known as a "silver dime" because of its silver content. These dimes were the last to be minted with silver before the composition changed to a copper-nickel alloy in 1965.
It's silvery in color, but modern ones are copper coated in nickel.
The Mercury Dime was composed of 90% Silver and 10% copper. It has a weight of 2 1/2 grams and a diameter of 17.9 mm.
A U.S. dime is 17.91 millimeters in diamater, which is 0.00001791 kilometers.
Do a Google image search for "Mercury Dime" and you will see the photo of the dime.
If it has been copper plated, it's still just a dime.
No Copper-nickel clad Copper 1 Dime "Roosevelt Dime" 1965-2017 1946-1964 Silver (.900)
Both nickels and dimes are composed of Copper and Nickel. A dime, however, is 91.67% Copper and 8.33% Nickel, while a nickel is 75% Copper and 25% Nickel. Since Copper is a bit denser than Nickel, and a dime contains relatively more Copper, than a dime would be denser than a nickel.
The value of a 2006 copper dime varies depending on its condition. In some cases this dime is worth about $0.15 and might be valued at up to about $1.
Nope.
A 1975 Roosevelt Dime has the following composition: outer layers of 0.75 copper and 0.25 nickel bonded to a core of pure copper; the overall composition is about 93% copper and 7% nickel. The coin weighs 2.27 grams.
75% copper and 25% nickel
$0.75
1964 and before 90% silver/10% copper, 1965 to date 75% copper/25% nickel.
NOO dime is 91.67 percent copper and 8.33 percent nickel. it is NOT made of iron.
There's no such thing as a copper dime. All 1911 dimes (in fact all dimes up till 1964) were made of a 90%-silver alloy.It's quite possible your coin is simply an ordinary silver dime with a lot of tarnish. If so, don't try to clean it; that'll reduce its value to a collector.There's more information at the Related Question.
If the coin is the same thickness as a regular dime it's been plated and is only worth face value. If it's thinner than a regular dime and is copper on one side only, the cupronickel cladding un-bonded from the core. This is called a lamination error and is worth around $5 or $6 Note there's no such thing as a 1967-P dime because US coins dated 1965, 1966, and 1967 don't carry mint marks.