The precipitation strengthened CuCrZr alloys are being considered as potential heat sink material for the shielding blanket of International Thermonuclear Experimental Reactor (ITER) first wall, due to its high strength and high thermal conductivity at high temperature. However, the mechanical properties of CuCrZr alloys are sensitive to the thermal history. In this study, the effects of cooling rate and aging temperature on the mechanical properties of CuCrZr alloys are investigated to optimize the HIP joining conditions without a significant degradation of CuCrZr alloys. The Victors hardness and strength of the aged CuCrZr alloys were increased with increasing the cooling rate. Those were the highest at $440^{circ}C$ and then gradually decreased up to $620^{circ}C$ regardless of the cooling rate. The tensile properties were higher than the minimum values of ITER requirements when the aging temperature was lower than $600^{circ}C$. Therefore, the upper limit of hot isostatic pressure (HIP) temperature for the Be/CuCrZr joint car be employed up to $600^{circ}C$.