High strength low alloy steel

Details High strength low alloy steel High strength low alloy steel

C - Chemistry, Metallurgy

22

C

75/147

C22C 38/12 (2006.01) C21D 7/13 (2006.01)

Patent

CA 1048306

HIGH STRENGTH LOW ALLOY STEEL ABSTRACT OF THE DISCLOSURE A low alloy steel having a composition containing columbium, vanadium and silicon, advantageously in specified ranges of content, has demonstrated superior mechanical pro- perties, comprising yield strength above 80 ksi, excellent toughness including good impact strength at low temperatures, and good formability evidenced by a suitably high percent elongation. The steel in its preferred embodiments includes a significant amount of manganese, and is economically pro- ducible in as-hot-rolled state to achieve the stated proper- ties, subject to attainment of even higher strength by an aging treatment.

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