C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 38/00 (2006.01) B21B 1/00 (2006.01) C21C 7/00 (2006.01) C22C 38/14 (2006.01) C22C 38/58 (2006.01)
Patent
CA 2662741
The invention relates to a steel plate having a composition comprising 0.01 wt.-% <= C <= 0.2 wt.-%, 0.06 wt.-% <= Mn <= 3 wt.-%, Si <= 1.5 wt.-%, 0.005 wt.-% <= Al <= 1.5 wt.-%, S <= 0.03 wt.-%, P <= 0.04 wt.-%, 2.5 wt.-% <= Ti <= 7.2 wt.-%, (0.45 xTi) - 0.35 wt.-% <= B <= (0.45 xTi) + 0.7 wt.-%, and, optionally, one or more of the following elements: Ni <= 1 wt.-%, Mo <= 1 wt.-%, Cr <= 3 wt.-%, Nb <= 0.1 wt.-%, V <= 0.1 wt.-%, the rest of the composition comprising iron and unavoidable impurities resulting from production.
L'invention concerne une tôle d'acier dont la composition comprend, les teneurs étant exprimées en poids : 0,010% <= C <= 0,20%, 0,06 % <= Mn <= 3%, Si <= 1,5%, 0,005% <= Al <= 1,5%, S <= 0,030%, P <= 0,040%, 2,5% <= Ti <= 7,2%, (0,45 xTi) - 0,35% <= B <= (0,45 xTi) + 0,70%, et optionnellement, un ou plusieurs éléments choisis parmi : Ni <= 1 %, Mo <= 1%, Cr <= 3%, Nb <= 0,1 %, V <= 0,1%, le reste de la composition étant constitué de fer et d'impuretés inévitables résultant de l'élaboration.
Bonnet Frederic
Bouaziz Olivier
Chevallot Jean-Claude (decede)
Arcelormittal France
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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