FIELD: metallurgy.
SUBSTANCE: invention refers to metallurgy, particularly to compositions of iron. Iron contains elements at a following ratio, mass % carbon 2.8-3.2; silicon 1.8-2.2; manganese 0.5-1.0; chromium 0.5-1.0; nickel 0.5-1.0; copper 0.5-1.0; boron 0.03-0.05; aluminium 0.3-0.5; titanium 0.3-0.5; niobium 0.5-1.0; magnesium 0.01-0.02, iron - the rest.
EFFECT: upgraded hardness of iron.
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