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1. (WO2017061224) ALUMINUM ALLOY EXTRUDED MATERIAL

Pub. No.:    WO/2017/061224    International Application No.:    PCT/JP2016/076324
Publication Date: Fri Apr 14 01:59:59 CEST 2017 International Filing Date: Thu Sep 08 01:59:59 CEST 2016
IPC: C22C 21/10
C22F 1/053
C25D 11/04
Applicants: SHOWA DENKO K.K.
昭和電工株式会社
Inventors: KATO Yoshikazu
加藤 良知
MURASE Isao
村瀬 功
Title: ALUMINUM ALLOY EXTRUDED MATERIAL
Abstract:
Provided is an excellent aluminum alloy extruded material enabling manufacturing of, through cut-processing and positive electrode oxidation treatment, a casing having excellent appearance while ensuring high strength. The aluminum alloy extruded material according to the present invention has an alloy composition containing Zn in an amount of 5.8-8.0 mass%, Mg in an amount of 1.2-2.0 mass%, Cu in an amount of 0.4-1.2 mass%, Si in an amount not more than 0.20 mass%, Fe in an amount not more than 0.20 mass%, and Ti in an amount of 0.01-0.1 mass%, wherein the total amount of Mn, Cr, and Zr is restricted to be not more than 0.10 mass%, the remaining portion comprises Al and unavoidable impurities, and the overall cross section of the aluminum alloy extruded material has a recrystallized structure.