The work is devoted to the investigation of the phase composition and dry abrasive wear resistance of Cr$_{x}$MnFeCoNiCu high-entropy alloys. In the experiment, the alloys of the Cr$_{x}$MnFeCoNiCu system (where $x$ = 0, 0.5, 1.0, 2.0, 3.0 in molar ratio) obtained by the arc melting method are used. Alloys with a chromium content of 0 to 1 in molar ratio consist of simple solid solutions; with further increase in the chromium content an intermetallic sigma-phase with a structure of the FeCr type is formed. The low mass loss of Cr$_{2}$MnFeCoNiCu and Cr$_{3}$MnFeCoNiCu alloys in the wear resistance test is explained by the presence of an intermetallic phase in their structure.