The dissolution process of iron-chromium alloys containing 10 and 25 mass% Cr in an aluminium melt at 700degreesC is found by the rotating-disc technique to be diffusion-controlled and non-selective. Experimentally determined values of the saturation concentration (solubility) and the dissolution rate constant of iron and chromium in liquid aluminium for the Fe Cr alloys are presented. Evaluated values of the diffusion coefficients of Fe and Cr across the diffusion boundary layer into the melt are also given. (C) 2003 Kluwer Academic Publishers.