Definition of high–speed steel
: an alloy tool steel which when heat-treated retains much of its hardness and toughness at red heat thus enabling tools made of it to cut at high speeds even though red-hot through friction
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Seen and Heard
What made you want to look up high–speed steel? Please tell us where you read or heard it (including the quote, if possible).