pearlite

/ˈpɜːrlaɪt/
noun
  1. A layered structure of iron and cementite found in steel and cast iron, giving it strength.
    • Pearlite forms when steel cools slowly from a high temperature.
    • The blacksmith examined the pearlite in the steel to check its quality.
    • Adding carbon changes the amount of pearlite in the metal.
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