hallmalmile omase liblegrafiidi ja keragrafiitmalmile omase mügargrafiidi vahepealse grafiidiosakeste kujuga (vermikulaargrafiidiga) malm (vt kompaktgrafiit, grafiitmalm; vrd liblegrafiitmalm, keragrafiitmalm, tempermalm), cast iron, characterized by a graphite structure intermediate to flake graphite in grey iron and the nodular graphite of ductile iron (see: compacted graphite, graphitic cast iron; compare: flake graphite cast iron, spheroidal graphite cast iron, malleable cast iron)