it becomes strength
The steel ship would sink.
High carbon steel
Yes. Low carbon steel is used in the body of the car.
That's not a test for any particular alloy at all, only a rough guide to two metals' relative hardnesses. Mild-steel cannot be hardened through, only case-hardened to give a thin, wear-resistant surface layer. Heat-treatable steels can be hardened through but hardness alone merely tells you it has been hardened, and may simply be high-carbon steel (Iron plus a small amount of carbon). If you know the metal in a particular machine can only be either untreated mild-steel or Chromoloy, then hardness will differentiate them; but if you don't know what alloys have been used, it tells you only which components have been hardened, and could be any of two or more such alloys in the machine. As for using a file as a hardness-tester.... Not with any file belonging to me or anyone else who respects their tools, you don't!
steel will float in mercury
what would happen if a large piece of steel wool was used? A much smaller piece
Tempered steel is not a classification of steel. It is a term used to indicate that the steel has undergone proper heat treatment in which case..yes, the steel that has been properly hardened and tempered would be stronger. This answer assumes that the high carbon steel is in its annealed state and has not received heat treatment and tempering of its own.
the main reason might be that the percentage of carbon increase the hardness of material (steel ) and ductility would decrease
Then the finished product would not be stainless steel.
The form of carbon that would make the best cutting or drilling tool is Carbon steel.
THat would be steel or cast iron.
yer maw