'Crucible steel' definitions:

Definition of 'crucible steel'

From: WordNet
noun
Steel made by the mixture of molten wrought iron, charcoal, and other substances in a crucible

Definition of 'Crucible steel'

From: GCIDE
  • 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.]