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gray iron
noun
- pig iron or cast iron having much of its carbon in the form of graphite and exhibiting a gray fracture.
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Word History and Origins
Origin of gray iron1
First recorded in 1655–65
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Example Sentences
To enter 732 S. Vermont Ave., you must carefully shove open a rusted gray iron gate until a gap large enough for you to slide through sideways appears.
From Los Angeles Times
The 15-year-old boy, whose name was not released due to his age, fell through an unsupported section of the roof of a gray iron factory in Cullman, Ala., around 11 a.m.
From Fox News
Above the dark gray iron, stone walls formed the North Tower.
From Literature
This batch of 2,500-degree “class 30 gray” iron was fresh from the electric crucible, a mini-volcano in the foundry here where metal is liquefied.
From Washington Post
Gray iron valve seats are cast into the cylinders.
From Project Gutenberg
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