Melt super-heating which promotes shape modification of ${eta}$ intermetallic compounds was conducted to improve mechanical properties of recycled AC2B aluminum alloy. Modification of needle-shape ${eta}$ intermetallic compounds was effective for the specimens of AC2B aluminum alloys containing 0.85wt.% Fe by melt super-heating, in which the melts had been held at $850^{circ}C$ or $950^{circ}C$ for 30 minutes respectively. Owing to the modification of needle-shape of ${eta}$ intermetallic compounds by melt superheating of the alloy with containing 0.85wt.% Fe to $950^{circ}C$, increases in elongation and tensile strength were prominent to be more than double and 55% respectively in comparison with the melt heated to $740^{circ}C$. Moreover, modification of needle-shape ${eta}$ intermetallic compounds in the alloy containing O.85wt.% Fe by $950^{circ}C$ melt super-heating led to 48% improvement of the value of impact absorbed energy as compared with the melt heated to $740^{circ}C$.