crucible steel

from WordNet (r) 3.0 (2006)

crucible steel
    n 1: steel made by the mixture of molten wrought iron, charcoal,
         and other substances in a crucible

from The Collaborative International Dictionary of English v.0.48

Crucible steel \Cru"ci*ble steel\
   Cast steel made by fusing in crucibles crude or scrap steel,
   wrought iron, and other ingredients and fluxes.
   [Webster 1913 Suppl.]