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gray iron

pig iron or cast iron having much of its carbon in the form of graphite and exhibiting a gray fracture.
Origin of gray iron
First recorded in 1655-65 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for gray iron
Historical Examples
  • Thermit steel being much stronger than gray iron, its shrinking sometimes strains and cracks the iron casting.

  • One of the things thermit is not extensively used for is the repairing of gray iron castings.

  • The first reason is that gray iron is cheaper than steel, and a new casting often can be turned out by the mills quickly.

  • Face set in a fighting mask and eyes hard as gray iron, deeper and deeper he drove his now irresistible forces.

    Skylark Three Edward Elmer Smith
  • At one point, not far from Cle-ellum River, a bed of gray iron ore crosses the magnetic ore at right angles.

    A Report on Washington Territory William Henry Ruffner
  • An average of over 400 tons of iron is poured daily, and 426 tons of gray iron have been poured in a single day.

  • The pistons as provided in the A-7 engines are cast from a mixture of steel and gray iron.

    Aviation Engines

    Victor Wilfred Pag

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