| 摘要 |
PROBLEM TO BE SOLVED: To provide an aluminum alloy foil capable of allowing strength to be further improved without seriously impairing conductivity.SOLUTION: An aluminum alloy foil includes 0.1-0.6 mass% of Si and 0.2-1.0 mass% of Fe as chemical composition, and is composed of Al and inevitable impurities as the residue. In the aluminum alloy foil, a foil thickness is 20 μm or less, an area ratio of subgrains with a crystal grain size of 2 μm or less is 40% or more if a boundary of which a difference in orientation is 5° ± 0.2° between neighboring crystal orientation measuring points is defined as a crystal grain boundary, a tensile strength is 210 MPa or more, and resistivity measured in liquid nitrogen is 0.45-0.7 μ&OHgr; cm. |
