The metal element of Iron (Fe) was never "invented" as it has existed across the Universe for billions of years. That being said humanity is thought to have first exploited Fe for industrial and social uses some 3500+ years ago. Since the use of Fe has become an inseparable aspect to modernity through steels and other metal working. Although Fe was never invented, it was to be discovered, exploited and refined through human technology.
The earliest steel item that's been discovered is around 4000 years old.
Becaus steel is stronger than iron.
Andrew Carnegie
Stainless steel was invented in Sheffield
Bob Barker
The Bessemer steel converter is a large container in which molten iron is converted into steel. The Bessemer steel converter was invented by Henry Bessemer in 1856.
The bessemer process was invented by Sir Henry Bessemer.
Henry Bessemer
the steel drum was invented in trinidad.the steel drum was invented in trinidad.
John deere invented the steel plow in 1837
Henry Bessemer invented a process to manufacture steel.
Stainless steel was invented in Sheffield
John Deere invented the steel (all by himself)
The steel converter was invented back in 1867 by Sander van Olst.
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He invented the American Steel Industry
Stainless steel was invented by Harry Brearly.
Stainless steel was discovered by accident in 1913.
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steel,automobile.airplane.