Importance

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Abstract

Steel chemical composition of which contains, by weight: 0.1%.ltoreq.C.ltoreq.0.4%; 1%.ltoreq.Mn.ltoreq.1.8%; 0.15%.ltoreq.Si.ltoreq.1.7%; 0%.ltoreq.Ni.ltoreq.1%; 0%.ltoreq.Cr.ltoreq.1.2%; 0%.ltoreq.Mo.ltoreq.0.3%; 0%.ltoreq.V.ltoreq.0.3%; Cu.ltoreq.0.35%; optionally from 0.005% to 0.06% of aluminum, optionally boron in contents of between 0.0005% and 0.01%, optionally between 0.005% and 0.03% of titanium, optionally between 0.005% and 0.06% of niobium, optionally from 0.005% to 0.1% of sulfur, optionally up to 0.007% of calcium, optionally up to 0.03% of tellurium, optionally up to 0.05% of selenium, optionally up to 0.05% of bismuth, optionally up to 0.1% of lead, the balance being iron and impurities resulting from smelting. Process for the manufacture of a forging.

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First Claim