Relation between tensile properties and recrystallized structure has been studied in Al-1.2%Fe-0.003-0.5%Si alloy foils of 100μm thickness which were prepared at various aging temperatures and heating rates in final annealing. The strength and elongation of the foils decrease with decreasing ratio of thickness to recrystallized grain size t/d. When t/d is larger than 5 or 6, the uniform elongation (true strain ε) is equal to the n-value of the material. For foils of 40 to 100μm in thickness, the relation between ε/n and t/d is given by a same equation. However, for thinner foils, the elongation becomes smaller than n. The decrease in elongation with increasing grain size is closely related to the development of surface roughness with plastic strain. In relation between texture and elongation, strong R-texture is not preferable to R-+cube-texture because of lower n value.