PURPOSE: To obtain an Al alloy having more excellent strength at high temp. than the conventional strength and to provide a molding of the Al alloy.

CONSTITUTION: This powdery Al alloy consists of 15-25wt.%, in total, of one of ≥2 kinds among Fe, Mn, Ni and Cr as transition metals and the balance essentially Al and contains a fine lump transition metal-Al compd, dispersed uniformly in a matrix. Among the transition metals, Fe is preferable because it is less expensive than Al and raw material for Fe is easily available, as well. This Al alloy may contain ≤3wt.%, in total, of one or ≥2 kinds among Mo, V, Ti and Zr besides the above-mentioned alloying components. This Al alloy is formed into the objective prescribed molding by hot plastic working.