Many kinds of Al-5Zn-2Mg-2Cu sintered alloys were produced with modifying variously such fabrication conditions as preforming pressure, temperature and time of sintering and age-hardening-treatment. And then, the optimum fabrication conditions were obtained from the viewpoints of mechanical properties. Furthermore, increasing of its mechanical properties was attempted by modifying contents of Zn, Mg and Cu. As the result, a high tensile and high elongation alloy with 654 MPa in tensile strength and 12.5 % in elongation could be produced in the alloying ratio of Al-9Zn-3Mg-2Cu.
