tool steel

noun

any of various high-carbon steels capable of being hardened and tempered to meet special requirements for machining, etc.

tool steel

any of various steels whose hardness and ability to retain a cutting edge make them suitable for use in tools for cutting wood and metal

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Examples have not been reviewed.

The making of such “tool steel” was critical for the second stage of the industrial revolution, where American industry came into its own.

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The spindle is of tool steel 31⁄2 inches in diameter at the front bearing, tapering uniformly 3⁄4 inch per foot to the back end.

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Large diameter oil tempered springs held in tool steel cups, locked with a key, are provided.

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The cutters are made of square tool steel of commercial size, and are ground and set to take a scraping end cut.

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Cobalt is also used in some of the best high-speed tool steels.

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