It is used for smoothing edges of a metal or wood
Most quality files are made from W2, 1% simple carbon steel.
A simple example is that a flat metal file can be used in metal working to file down (smooth) rough edges on a piece of metal.
smooths down metal or wood
About 58RC
Steel
steel.
silver is used for making spaceships
aluminium is used for making electrical cables as the metal do not melt easily
Silver chloride, bromide or iodide (photosensitive compounds)
Tungsten is a Transition metal. Thus for making it a metal.
Heavy metal!!
copper metal is ussualy used for making pipes
The metal is Tungsten.
Mostly "COPPER" is used in making wires
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Tin
steel.
Electrum
Silicon
silver is used for making spaceships
copper is used in making varakh
Aluminum