Abstract In this paper were characterised the morphology of powder particles by analyse of the influence of different shape descriptors on disintegrated WC-Co hardmetal powder particles produced by multiple disintegrator milling. A very important parameter of powder particles produced by mechanical methods is their angularity that can be characterized by numerous shape factors. In this work were used the "spike parameter" SPQ and shape factors (roundness RN, roundness factor RNF, irregularity parameter IP, elongation EL and dispersion DP). On the basis of evaluation of WC-Co hardmetal powder particles were determined the following: the irregularity parameter (IP) and spike parameter - quadratic fit (SPQ), the numerical descriptors for shape factor that adequately characterize the particle morphology, may be used to characterize powders produced by mechanical methods. With an increase in the angularity of regular configuration (from circular to triangular), the values of parameters IP and SPQ are in the range of 1.0-2.0 and 0--0.866, respectively. the shape factor parameter SPQ studied for characterizing WC-Co hardmetal powders is a more sensitive factor for angularity than irregularity parameter IP. For disintegrator ground powders, the values of SPQ parameters are in the range of 0.652-0.258. At the same time the average values of the irregularity parameter IP, what takes into account of ellipticity and irregularity of particles were in the range of 1.89 to 1.76.