ALUMINUM ALLOY SHEET FOR BLOW MOLDING AND PRODUCTION METHOD THEREFOR

摘要

Provided is an aluminum alloy plate for blow forming comprising: 0.3% by mass or more and 1.8% by mass or less of Mg; 0.6% by mass or more and 1.6% by mass or less of Si; and 0.2% by mass or more and 1.2% by mass or less of Mn; wherein, in at least one surface of the aluminum alloy plate for blow forming, X and Y satisfy the following relations: 0.10 ‰¤ X, and, Y ‰¥ -8.0X + 10.8; wherein X represents the ratio of regions whose valley depth in a roughness curve is 0.3 µm or more; and Y represents the yield stress upon deformation of the aluminum alloy plate for blow forming under predetermined conditions.