Aluminum alloy extruded material having anodized film with excellent appearance quality and method for producing the same

摘要

An object of the present invention is to provide a 7000 series aluminum alloy extruded material which has a desired strength and hardly causes a streak pattern on the surface of an anodized film. According to the present invention, it is an aluminum alloy extruded material, Zn: 4.0 mass% to 7.5 mass%, Mg: 1.0 mass% to 2.2 mass%, Fe: 0.05 mass %: 0.20 mass% or less, Cu: 0.30 mass% or less, Ti: 0.005 mass% or more and 0.04 mass% or less, B: 0.001 mass% or more and 0.02 mass% or less, Si: 0.15 mass% or less, Zr: 0.05 mass% or less, Mn: 0.05 mass% or less, Cr: 0.05 mass% or less, V: 0.05 mass% or less, Zr, Mn [Zr + Mn + Cr + V + Ti] satisfying the relationship of [Zr + Mn + Cr + V + Ti] ≦ 0.10 mass%, the Zn content is 6.0 mass% or less, and the Mg content is 1 .The balance is aluminum except the range of 2 mass% or less Consists unavoidable impurities, the metal structure excellent aluminum alloy extruded material and a method for producing the same appearance quality having an anodic oxide film is a recrystallized structure is provided.