Steel 
Steel is an alloy of iron and carbon and other elements. Because of its high tensile strength and low cost, it is a major component used in buildings, infrastructure, tools, ships, automobiles, machines, appliances, and weapons.
Steel 
And he sang: "Hurra for my handiwork!" 
  And the red sparks lit the air; 
 Not alone for the blade was the bright steel made; 
  And he fashioned the first ploughshare.
Charles Mackay, Tubal Cain, Stanza 4, in Hearty Staves of Heart-Music (1858) edited by John Erskine Clarke, p. 82