The methodology of single crystal growth of metastable beta-Ti alloy METAL LCB in an optical floating zone furnace is presented in this paper. Chemical compositions of both precursor material and single crystals were checked. It was found that the concentration of base alloying elements did not change significantly during the growth process, while the concentrations of interstitial elements O and N increased. DSC measurement determined that this concentration shift has a slight impact On ongoing phase transformations, as in the single-crystalline material peak associated with of phase precipitation moves by a few degrees to a lower temperature and peak attributed to diffusion controlled growth of omega particles shifts to a higher temperature. X-ray reciprocal space maps were measured and their simulation showed that the single crystal has a mosaic structure with mean size of mosaic blocks of approximately 60 nm. (C) 2014 Elsevier B.V. All rights reserved.