How Copper Coins Are Made?

A very interesting question...I await an equally interesting answer.

Also, aren't copper coins an alloy of copper and another metal? Alloys can often have different properties then either of their constituents.

And it is common as noted that some metals when mixed with othere create entire new properties. Such is the situation with Copper and Zinc. Bronze is a really great example of that since at one time the mixtures of metals made them strong enough to use as weapons.
There are numerous such oddities in metalurgy such as Stainless Steels where there are many, many grades due to the variety of mixtures. One of them, although contains Iron, is non magnetic completely and is used due to that property.
One thing to remember about a penny's hardness is the size too. A long wire of the same material and of the same thickness is easy to bend regardless of the temperature. The penny is rather small and difficult to get a grip on to bend.

Ancient Greek and Roman "copper" coins were typically bronze - an alloy of copper and tin. Bronze is much harder than pure copper.

By 600 AD, bronze coins were basically extinct in Europe. When small change was re-invented in the renaissance, pure copper rather than bronze was typically used. Bronze replaced copper again during the 1800s.

Although Bronze is basically Copper and Tin, in most instances for hardness or appearances many other substances are included. By Substances this indicates that other than metals have been added. For example such items as Phosphorus, Manganese, Aluminum, and even Silicon were added to the mixture. Swords had to be hard since Steel hadn't been invented yet. Coins too varied in mixtures since quality controls were not really important.

Quote: "And did it occur to you that you may have been comparing the bendability of insulated wire compared to bare wire?
And grounding wires do not have the stringent purification necessities of current carrying wires and cables. And in some areas the Copper grounding wires are Lead Covered also."

You know just carl, Very little occured to me at all! This whole thing kinda dumb-founded me.
The grounding wire on this pole was insulated with some kind of rapping material, not plastic, more like cloth with tar or something?. Most of the wrapping had fallen off but some was still on there pretty good. I cut out the bare wire sections and folded them up,(this was not "easy" to do as the wire was very stiff). I live out in the country and we have a burn permit, while burning some brush I tossed in the wire and burned the insulation off. After the wire had cooled off, no heat felt at all, I could easily wrap the wire around one hand into a fairly small loop, unlike the same wire that had not been heated.
So this is why I asked about the big pennies and other copper coins I see. So the replies and posts make more sense..... I am sure my copper wire is pure copper, were pennies are not!