Spiegeleisen

//ˈʃpiːɡəlˌaɪzən// noun

Definitions

Noun
  1. 1
    A ferromanganese alloy containing approximately 15% manganese and small quantities of carbon and silicon. countable, uncountable

    "Historically, spiegeleisen was the standard form in which manganese was traded and used in steelmaking."

  2. 2
    pig iron containing manganese; used as a deoxidizing agent and to raise the manganese content in making steel wordnet

Etymology

From German Spiegeleisen (literally “mirror iron”).

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