| 摘要 |
The invention relates to a flat, rolled semi-finished product made of an aluminum alloy. The aluminum alloy has the following alloy proportions in weight percentages: 2 <= Mg <= 5, Mn <= 0.5, Cr <= 0.35, Si <= 0.4, Fe <= 0.4, Cu <= 0.3, Zn <= 0.3, Ti <= 0.15, other elements totaling no more than 0.15 and separately not exceeding 0.05, and the remainder consists of Al. The semifinished product is rolled from a bar (4) and, during the rolling process, is subjected to at least one intermediate tempering between two cold reduction passes and to a final soft-annealing in a chamber furnace (7, 9). The invention also relates to a method for producing said semi-finished product. A semi-finished product of this type does not have any flow lines after shaping or deep- drawing if, according to the invention, the degree of reshaping before the first intermediate tempering is equal to at least 50 % and, before the final soft-annealing, is no greater than 30 %, and the semifinished product is drawn by 0.1 to 0.5 % after the final soft-annealing.
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