NOVELTY - The low-dissolution aluminum-alloy material contains manganese, silicon having an elution coefficient of 0.001, titanium having an elution coefficient of 0.31, copper having an elution coefficient of 0.03, nickel having an elution coefficient of 0.84, cobalt having an elution coefficient of 0.84, zinc having an elution coefficient of 0.33, chromium having an elution coefficient of 0.12, and/or zirconium having an elution coefficient of 0.0003. The content of the elements is such that the sum total of elution coefficient does not exceed 1.1.    USE - For cooling systems of fuel cells used for electric-power generation in vehicles, and also for cooling systems of electronic devices e.g. for cooling heat exchangers and piping.    ADVANTAGE - The low-dissolution aluminum-alloy material is lightweight and excellent in thermal conductivity, workability, processability, and castability. The alloying elements are inhibited from dissolving away in a cooling liquid, such as pure water. The material eliminates the need for imparting anticorrosive properties to the cooling liquid itself and coating the inner surface of components of the cooling system for rust prevention.    DETAILED DESCRIPTION - A low-dissolution aluminum-alloy material contains alloying elements chosen from manganese (0.5-2 mass%) as compound of aluminum and manganese (Al4Mn and/or Al6Mn), silicon having an elution coefficient of 0.001, titanium having an elution coefficient of 0.31, copper having an elution coefficient of 0.03, nickel having an elution coefficient of 0.84, cobalt having an elution coefficient of 0.84, zinc having an elution coefficient of 0.33, chromium having an elution coefficient of 0.12, and zirconium having an elution coefficient of 0.0003. The content of the elements is such that the sum total of elution coefficient does not exceed 1.1. The elution coefficient is the ratio of electroconductivity calculated from saturation solubility with respect to pure water at 25degreesC, and setting aluminum to 1. The sum total of elements other than manganese in the surface layer up to 5 microns is 0.05 mass% or less, and the sum total of iron, magnesium and lead is 20 mass ppm or less.