case-hardened
- adjective
- /ˈkeɪsˌhɑrdənd/
- Specialized
- The tools were made from case-hardened steel, ensuring they would last longer under heavy use.
Examples
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This case-hardened metal frame can withstand extreme conditions without losing its strength.
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The manufacturer claims that the case-hardened finish on these metal parts provides excellent protection against wear and tear.
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I sent them off to have them all case hardened and I called the convincer.
Synonyms
Having a hard outer covering that protects what is inside, like a crab or nut
Has a hard outer skin that does not break easily
How Hard
Surface Forms
Morphology
Etymology
Case-hardened comes from a metal treatment where the case or 'outer layer' is made hardened while the inside stays softer. So case-hardened metal parts have a hard surface for strength and a softer core to avoid breaking.