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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 3.2-3.8; silicon 1.0-2.0; manganese 0.2-0.6; yttrium 0.05-0.1; REM (rare earth metals) 0.1-0.2; molybdenum 0.8-1.2; titanium 0.15-0.3; iron - the rest.EFFECT : producing iron of upgraded heat resistance.1 tbl