crucible steel
Noun
Meaning
steel made by the mixture of molten wrought iron, charcoal, and other substances in a crucible
Source: WordNetHypernyms
Examples
In making crucible steel, the blister steel bars were broken into pieces and melted in small crucibles, each containing 20 kg or so.
However, these metals found little practical use until the introduction of crucible steel around 300 BC.
The early modern crucible steel industry resulted from the invention of Benjamin Huntsman in the 1740s.
This process was refined in the 18th century with the introduction of Benjamin Huntsman 's crucible steel -making techniques, which added an additional three hours firing time and required additional large quantities of coke.