The influence of crystallization on the corrosion resistance of bulk metallic glass Fe66.7C7.0Si3.3B5.5P8.7Cr2.3Al2.0Mo4.5 fabricated using industrial raw materials has been studied in the solutions of 0.5 M H2SO4 and 1N HCl, respectively It was found that corrosion resistance is strongly dependent on the microstructural change caused by annealing treatment. As-cast rods comprising fully amorphous phase exhibit higher corrosion resistance than crystallized rods. (C) 2008 Elsevier B.V. All rights reserved.