In the authors' previous studies, the theoretical model of ultrasonic wave velocity propagating in plastically deformed solids has been proposed by one of the authors and successively verified experimentally. Then, deformation localization was analyzed by adopting the proposed theoretical model. The onset of localization of plastic deformation has been defined as the occurrence of “stationary discontinuity” characterized by a vanishing velocity of an acceleration wave based on acceleration wave theory. Moreover, based on shock wave theory one of the authors derived that the micro-crack nucleation is caused by the jump of the velocity along the intersected crossing line between two different stationary discontinuity bands characterized by vanishing velocity of an acceleration wave. In the previous paper, to consider dependence of the progress of ductile fracture of crystal solids on crystal orientations the algorithm of acoustic tensors derived from the proposed model was built into finite element crystal plasticity model (FEPM) and the progress of ductile fracture in FCC single crystals was analyzed. In this paper, dependence of the ductile fracture progress in FCC bi-crystal models on combinations of crystal orientations is examined.