Weldable high strength al-mg-si alloy

C - Chemistry – Metallurgy – 22 – C

Patent

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Details

C22C 21/02 (2006.01) B32B 15/01 (2006.01) C22C 21/08 (2006.01) C22F 1/043 (2006.01)

Patent

CA 2450684

The invention relates to a weldable, high-strength aluminium alloy rolled product containing the elements, in weight percent, Si 0.8 to 1.3, Cu 0.2 to 0.45, Mn 0.5 to 1.1, Mg 0.45 to 1.0, Fe 0.01 to 0.3, Zr<0.25, Cr<0.25, Zn<0.35, Ti<0.25, V<0.25, others each<0.05 and total <0.15, balance aluminium, and further with the proviso that the weight percent of "available Si" is in the range of 0.86 to 1.15, preferably in the range of 0.86 to 1.05. The weight percentage ("wt.%") of "available Si" is calculated according to the equation:- w.% Si(available)=wt.%Si-(wt.% Fe+wt.% Mn)/6.

La présente invention concerne un produit laminé d'alliage d'aluminium à haute résistance contenant les éléments suivants, en pourcentage pondéral: Si de 0,8 à 1,3; Cu de 0,2 à 0, 45; Mn de 0,5 à 1,1; Mg de 0,45 à 1,0; Fe de 0,01 à 0,3; Zr < 0,25; Cr < 0,25; Zn 0,35; Ti < 0,25; V < 0,25; autres chacun < 0,05 avec un total < 0,15, et le reste étant de l'aluminium, étant entendu que le pourcentage pondéral de <=Si disponible>= est compris entre 0,86 et 1,15, de préférence entre 0,86 et 1,05. Le pourcentage pondéral de <=Si disponible>= est calculé selon l'équation: Si disponible en pourcentage pondéral = pourcentage pondéral de Si - (pourcentage pondéral de Fe + pourcentage pondéral de Mn)/6.

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