Composite aluminium panel

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 3/28 (2006.01) B23K 20/12 (2006.01) B32B 15/01 (2006.01) C22C 21/06 (2006.01)

Patent

CA 2349004

A composite aluminium panel comprising two parallel plates and/or sheets secured to the peaks and troughs of a corrugated aluminium stiffener sheet between the parallel plates and/or sheets, wherein the corrugated aluminium stiffener sheet is made from an aluminium alloy rolled sheet of composition (in weight percent): Mg 1.5-6.0, Mn 0.3-1.4, Zn 0.4-5.0, Fe up to 0.5, Si up to 0.5, Zr up to 0.30, optionally, one or more of (Cr 0.05-0.30, Ti 0.01-0.20, V 0.05-0.25, Ag 0.05-0.40, Cu up to 0.40), others up to 0.05 each, 0.15 total, Al balance, and having in an H-condition or in the O-condition a ratio of PS/UTS in the range of 0.4 to 0.9 and having good roll formability.

La présente invention concerne un panneau aluminium composite comprenant deux plaques et/ou feuilles parallèles fixées sur les crêtes et les creux d'une tôle ondulée raidisseuse en aluminium. Cette plaque raidisseuse est faite d'une feuille d'alliage d'aluminium laminé présentant (en poids) la compositions suivante : Mg 1,5-6,0, Mn 0,3-1,4, Zn 0,4-5,0, Fe jusqu'à 0,5, Si jusqu'à 0,5, Zr jusqu'à 0,30, avec, éventuellement, un ou plus des éléments suivants (Cr 0,05-0,30, Ti 0,01-0,20, V 0,05-0,25, Ar 0,05-0,40, Cu jusqu'à 0,40), d'autres éléments jusqu'à 0,05 chacun, 0,15 au total, le reste Al. Cette plaque se caractérise dans l'état H ou dans l'état O par un rapport résistance à la charge d'épreuve/force ultime de tension compris entre 0,4 et 0,9 et possède une bonne aptitude au laminage.

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