Uacj Corporation

Satoshi Udagawa

Hidenori Hatta

Takero Watanabe

An aluminum alloy contains, in mass percent, Zn: 2.5% or more and less than 5.0%, Mg: 2.2% or more and 3.0% or less, and Ti: 0.001% or more and 0.05% or less, Cu: 0.10% or less, Zr: 0.10% or less, Cr: 0.03% or less, Fe: 0.30% or less, Si: 0.30% or less, and Mn: 0.03% or less, the remainder being composed of Al and unavoidable impurities. In addition, the tensile strength is 380 MPa or more; the electrical conductivity is 38.0% IACS or more; and the metallographic structure is composed of a recrystallized structure.

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Aichi, Japan

Satoshi Udagawa