Yes. They were designed to be durable as coins are constantly being handled by human hands and rub against other coins in our wallets, purses or pockets. Most coins today are made of Nickel and Nickel alloys. Nickel is a very durable metal.
It's not quite clear what you mean. ALL coins are made in mints, by definition. If you mean a MINT STATE coin, it's a coin that's exactly as it was when it was struck, without being in circulation....
With the exception of a few very noticeable errors such as broadstruck coins, 99.9999% of bent coins are the result of damage. That makes them worth only their face value or metal value, whichever is...