公开(公告)号：US10550455B2

公开(公告)日：2020-02-04

申请号：US14957383

申请日：2015-12-02

Applicant: ALCOA INC.

Inventor： Timothy A. Hosch ,  John M. Newman ,  David Allen Tomes, Jr.

IPC: C22C21/02 ,  C22F1/043 ,  B22D11/00 ,  C22F1/00

Abstract: New 6xxx aluminum alloy strips having an improved combination of properties are disclosed. The new 6xxx new aluminum alloy strips are rolled to a target thickness in-line via at least a first rolling stand and a second rolling stand. In one approach, the 6xxx new aluminum alloy strips may contain 0.8 to 1.25 wt. % Si, 0.2 to 0.6 wt. % Mg, 0.5 to 1.15 wt. % Cu, 0.01 to 0.2 wt. % manganese, 0.01 to 0.2 wt. % iron; up to 0.30 wt. % Ti; up to 0.25 wt. % Zn; up to 0.15 wt. % Cr; and up to 0.18 wt. % Zr.