Definition of cementite in English:

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Pronunciation: /səˈmenˌtīt/


A hard, brittle iron carbide present in cast iron and most steels.
  • Chemical formula: Fe3C.
Example sentences
  • This cementite is hard (Brinell hardness 600 +), brittle and brilliantly white.
  • The harder pearlite is comprised of alternating thin layers or shells of ferrite and cementite, a very hard substance.
  • It has been shown how the difference in solubility of carbon in austenite and ferrite leads to the familiar ferrite / cementite aggregates in plain carbon steels.


Late 19th century: from cement + -ite1.

For editors and proofreaders

Syllabification: ce·ment·ite

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