CAST IRON

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FIELD : metallurgy.SUBSTANCE : invention relates to metallurgy field, particularly to cast iron composition. Cast iron contains components in a following ratio, wt % : carbon 2.7-3.1; silicon 2.3-2.7; manganese 0.4-0.6; chrome 0.3-0.5; copper 0.9-1.3; magnesium 0.003-0.007; rare-earth metals 0.003-0.007; niobium 0.03-0.07; nickel 1.1-1.7; boron 0.003-0.007; iron - the rest.EFFECT : reduction of gaseous and slag blowhole in cast iron.1 tbl