Aluminum-killed low carbon steel sheet for packaging

C - Chemistry – Metallurgy – 21 – D

Patent

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Details

C21D 8/02 (2006.01) C21D 9/46 (2006.01) C21D 9/52 (2006.01) C22C 38/04 (2006.01) C22C 38/06 (2006.01)

Patent

CA 2312674

L'invention a pour objet une tôle d'acier à bas carbone calmé à l'aluminium comprenant en poids entre 0,022 et 0,035 % de carbone, entre 0,15 et 0,25 % de manganèse, entre 0,040 et 0,070 % d'aluminium, entre 0,004 et 0,006% d'azote, le reste étant du fer et des impuretés résiduelles inévitables. L'acier comporte du carbone à l'état libre, un nombre de grains par mm2 supérieur à 20000 et, à l'état vieilli, un taux d'allongement A% satisfaisant la relation : (670-Rm)/14: <= A% <=(720-Rm)/17 Rm étant la résistance maximale à la rupture.

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