Al-Mg-Si-BASED ALUMINUM ALLOY PLASTICALLY WORKED MATERIAL, AND METHOD FOR MANUFACTURING Al-Mg-Si-BASED ALUMINUM ALLOY EXTRUSION MATERIAL

摘要

To provide an Al-Mg-Si-based aluminum alloy plastically worked material excellent in self-pierce rivet bond strength.SOLUTION: A plastically worked material used for self-pierce rivet bond contains Si: 0.95 mass%-1.25 mass%, Mg: 0.80 mass%-1.05 mass%, Cu: 0.30 mass%-0.50 mass%, Mn: 0.40 mass%-0.60 mass%, Fe: 0.15 mass%-0.30 mass%, Cr: 0.09 mass%-0.21 mass%, B: 0.0001 mass%-0.03 mass%, has a percentage content of Zn of 0.25 mass% or less, a percentage content of Zr of 0.05 mass% or less and a percentage content of Ti of 0.10 mass% or less, and the balance Al with impurities, in which a shearing tensile maximum load measured according to JIS Z3136-1999 of a self-pierce rivet joined body of the aluminum alloy plastically worked materials is 8.5 kN or more.SELECTED DRAWING: Figure 2