Definition of case-hardened in English:

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case-hardened

adjective

1(Of a material) having a hard surface: case-hardened sandstones
More example sentences
  • When the stone was properly seasoned, the exposed surfaces were case-hardened, creating a finish more resistant to weathering.
1.1(Of iron or steel) having been given a hard surface by being carburized: a case-hardened steel anvil
More example sentences
  • The bolts are similarly machined from case-hardened steel alloy.
  • Fusion-welded overlays have strong bonds, but the primary surface-hardened steels used in wear applications with fatigue loads include heavy case-hardened steels and flame or induction-hardened steels.
  • It is made of 14-gauge steel and features a pry-resistant door that locks with four half-inch diameter, case-hardened steel bolts.
1.2Made callous or tough by experience: a case-hardened politician
More example sentences
  • But those same flames also case-hardened developing nations.
  • But, regardless of how well the interviewers are trained, case-hardened criminals are unlikely to take these bogus coppers seriously, and might find it easy to ‘pull the wool over their eyes’.
  • Sometimes, even when you are a case-hardened professional, you see history differently.
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