Spiegel iron

1.

(Metal.) A fusible white cast iron containing a large amount of carbon (from three and a half to six per cent) and some manganese. When the manganese reaches twenty-five per cent and upwards it has a granular structure, and constitutes the alloy ferro manganese, largely used in the manufacture of Bessemer steel. Called also specular pig iron, spiegel, and spiegeleisen.

Noun

1.

spiegel iron - pig iron containing manganese; used as a deoxidizing agent and to raise the manganese content in making steel Synonyms: spiegel, spiegeleisen

pig iron, spiegel, spiegeleisen