IRON

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FIELD : metallurgy, iron and steel industry.SUBSTANCE : invention refers to metallurgy, particularly to compositions of iron. Iron contains elements at a following ratio, mas.% : carbon 2.7-3.3; silicon 2.0-2.5; manganese 0.8-1.2; chromium 0.3-0.5; copper 0.2-0.4; magnesium 0.005-0.01; REM (rare earth metals) 0.1-0.2; zirconium 0.5-1.0; iron - the rest.EFFECT : reducing formation of gaseous and slag cavities in iron structure.1 tbl