malm, kus kogu süsinik või suurem osa sellest on vabas olekus (grafiidina) (vt liblegrafiitmalm/hallmalm, keragrafiitmalm, kompaktgrafiitmalm, tempermalm; vrd valgemalm), cast iron in which whole carbon is in the form of free graphite (see: flake graphite cast iron/gray cast iron, nodular graphite cast iron, compacted graphite cast iron, malleable cast iron; compare: white cast iron)