The microstructure, hot cracking susceptibility, and mechanical properties of a novel Al-Cu-Y alloy were investigated. The Al-4.7Cu-1.6Y alloy demonstrated very good casting properties, hot cracking susceptibility that is similar to Al-Si-Mg alloys. Analysis of the solidification process showed that the primary Al solidification is followed by the eutectic reaction Liquid→τ 1 (Al 8 Cu 4 Y)+Al and the peritectic reactions Liquid+τ 6 (Al,Cu) 11 Y 3 )→Al+τ 1 (Al 8 Cu 4 Y) (612°C) and Liquid+η(AlCu)→τ 1 (Al 8 Cu 4 Y)+θ(Al 2 Cu) (595°C). The τ 1 (Al 8 Cu 4 Y) eutectic phase demonstrated high thermal stability during homogenisation treatment. The recrystallisation temperature was in the range 250-350°C after rolling with previous quenching at 540 and 590°C and without heat treatment. The recommended annealing mode for material in the as-rolled condition is 100°C for 1 h: YS = 273 MPa, UTS = 305 MPa and El. = 6.6%.