ALUMINUM ALLOY PLATE FOR AUTOMOTIVE OUTER PANEL HAVING EXCELLENT SURFACE QUALITY AFTER PRESS WORKING AND AUTOMOTIVE OUTER PANEL

摘要

PROBLEM TO BE SOLVED: To provide an aluminum alloy plate for an automotive outer panel with which occurrence of a ridging mark in press working is suppressed and the surface quality after press working is excellent, and an automotive outer panel.;SOLUTION: The automotive outer panel is a T4 tempered continuous cast and rolled plate of an aluminum alloy which contains 0.4 to 15% Si and 0.2 to 1.2% Mg and the balance AL with impurities in which Fe as an impurity is restricted to ≤0.30%, and in which the maximum length of the internally existing continuous crystallized matters is ≤500 μm.;COPYRIGHT: (C)2006,JPO&NCIPI