What is the material of the one-dollar coin (what is the material of the one-dollar coin and how expensive it is)

1, the one-dollar coin is made of nickel-plated steel core, and the outer edge o

What is the material of the one-dollar coin (what is the material of the one-dollar coin and how expensive it is)

1, the one-dollar coin is made of nickel-plated steel core, and the outer edge of the coin is cylindrical.

2. Coins have four advantages, and their circulation life is much longer than that of paper money; It is more convenient to use; Purify the circulation environment; Save natural resources. The 1 standard machine-made currency manufactured under modern technology conditions can be circulated for 30,000 times, with an average circulation time of 30 years, while 1 paper money can be circulated for 300 times on average, which is only1100 of the life of coins. The ratio of the 20-year comprehensive cost of coins and banknotes with the same denomination 1 yuan is about 1: 15.