Cast Iron
Cast iron is iron or a ferrous alloy which has been heated until it liquefies, and is then poured into a mould to solidify. It is usually made from pig iron. The alloy constituents affect its colour when fractured: white cast iron has carbide impurities which allow cracks to pass straight through. Grey cast iron, or grey iron, has graphitic flakes which deflect a passing crack and initiate countless new cracks as the material breaks.
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Famous quotes containing the words cast and/or iron:
“For it is with the mysteries of our religion, as with wholesome pills for the sick, which swallowed whole, have the virtue to cure; but chewed, are for the most part cast up again without effect.”
—Thomas Hobbes (1588–1679)
“When Sheba was his lass,
When she the iron wrought, or
When from the smithy fire
It shuddered in the water:
Harshness of their desire
That made them stretch and yawn....”
—William Butler Yeats (1865–1939)