Aluminum alloy plate excellent in ridging resistance and hem bendability and method for producing the same

摘要

The present invention is an aluminum alloy rolled material for forming process comprising an aluminum alloy containing a predetermined amount of Mg, Si, Mn and satisfying a condition of 0.005 ≦ Mn + Cr ≦ 0.080 mass%, The crystal grain size d1 of the L-LT plane at a plate thickness in the range of ± (t / 8) from the center is 30 to 80 μm centering on the position of t / 2), and the crystal of the L-ST plane in the entire plate thickness The present invention relates to an aluminum alloy plate having an excellent ridging resistance and hem bendability in which the particle size d2 is 60 μm or less and the Cube orientation area ratio C of the crystal orientation on the plate surface is 10% or more.