| 摘要 |
A high-strength aluminum alloy having a chemical composition which contains, in terms of mass%, 2.5-5.0% (excluding 5.0%) Zn, 2.2-3.0% Mg, and 0.001-0.05% Ti and has contents of Cu, Zr, Cr, Fe, Si, and Mn reduced to 0.10% or less, 0.10% or less, 0.03% or less, 0.30% or less, 0.30% or less, and 0.03% or less, respectively, with the remainder comprising Al and unavoidable impurities. The alloy has a tensile strength of 380 MPa or higher, an electrical conductivity of 38.0% IACS or greater, and a metallographic structure comprising a recrystallized structure. |
