How long has steel been used for?

Answer 1

Silver was used for circulating coins in many countries until the middle of the 20th century. In the 1960s world demand for silver skyrocketed, and governments were forced to deregulate its price. That meant coins containing silver could be worth more than their face value if they were melted down for their metal content.

Countries eliminated silver from their coins at different times. A few examples:

• Great Britain - Reduced silver content in 1920, eliminated in 1947
• Canada - Reduced silver content in 1920, further reduced in 1968, eliminated later that same year
• United States - Eliminated in 1965 for all denominations except 50¢, which was reduced that year; eliminated from 50¢ coins in 1971

Answer 2

Steel has been used by humans for over 4,000 years, with the earliest known examples dating back to around 1800 BCE in ancient Mesopotamia. However, modern steel production techniques, such as the Bessemer process, were not developed until the 19th century, leading to the widespread use of steel in construction and manufacturing.

Answer 3

Humans have used silver for thousands of years, ever since prehistory. It has been used as money, as well as for making utensils and ornaments.

Answer 4

at least longer than 4000 to 5000 years