gray iron

American  

noun

1. pig iron or cast iron having much of its carbon in the form of graphite and exhibiting a gray fracture.

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Etymology

Origin of gray iron

First recorded in 1655–65

Example Sentences

See Examples For:

gray iron

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 ● Jan. 29, 2022

Above the dark gray iron, stone walls formed the North Tower.

From "Huntress" by Malinda Lo

There was sheep gray, iron gray, blue gray, dirty gray, with bed blankets, quilts, buffalo-robes, pieces of carpeting of all colors and figures, for blankets.

From The Boys of '61 or, Four Years of Fighting, Personal Observations with the Army and Navy by Coffin, Charles Carleton

The magnet frame, B, consisting of the cores and the yoke formed integrally of a single soft gray iron casting, is adapted to receive the bobbins, A A, to form an electro-magnet.

From Scientific American Supplement, No. 794, March 21, 1891 by Various

They told us we could not cast gray iron by our endless chain method and I believe there is a record of failures.

From My Life and Work by Ford, Henry