CAST IRON

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FIELD : metallurgy.SUBSTANCE : invention concerns metallurgy field. Particularly it concerns cast iron content. Cast iron contents components at a following ratio, mass % : carbon 2.8-3.2; silicon 0.4-0.8; manganese 0.4-0.8; nickel 2.8-3.2; rare-earth metals 0.1-0.2; aluminium 0.1-0.2; copper 0.4-0.8; calcium 0.004-0.008; titanium 0.1-0.2; zirconium 0.1-0.2; boron 0.04-0.08; molybdenum 2.8-3.2; niobium 0.1-0.2; magnesium 0.005-0.01; cobalt 0.8-1.2; iron - the rest.EFFECT : cold resistance improvement of cast iron.1 tbl