IRON Russian patent published in 2008 - IPC C22C37/10 

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 3.0-3.5; silicon 1.5-2.0; manganese 1.5-2.5; nitrogen 0.005-0.01; titanium 0.1-0.2; cerium 0.03-0.08; lanthanum 0.03-0.08; neodymium 0.03-0.08; praseodymium 0.03-0.08; aluminium 0.1-0.2; cobalt 1.0-1.5; nickel 0.3-0.5; molybdenum 0.3-0.5; calcium 0.005-0.01; iron - the rest.

EFFECT: producing iron of upgraded heat resistance.

1 tbl