STEEL Russian patent published in 2009 - IPC C22C38/14 

FIELD: metallurgy.

SUBSTANCE: invention relates to sparingly alloyed steels used for manufacturing of crankshaft with cross-section up to 500 mm for maritime court diesel by method of electroflux-remelting process. Steel contains carbon, silicon, manganese, nickel, molybdenum, vanadium, niobium, aluminium, titanium, nitrogen, calcium, cerium, sulfur, phosphor and iron in the following components ratio, wt %: carbon 0.051 - 0.10, silicon 0.10 - 0.40, manganese 4.55 - 5.25, nickel 1.8 - 2.35, molybdenum 0.45 - 0.60, vanadium 0.11 - 0.20, niobium 0.03 - 0.10, aluminium 0.003 - 0.025, titanium 0.003 - 0.008, nitrogen 0.011 - 0.025, calcium 0.001 - 0.025, cerium 0.021 - 0.025, sulfur ≤0.01, phosphor ≤0.01, iron - the rest.

EFFECT: there are increased steel mechanical properties, simplified the process of its manufacturing.

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