We compare the characteristics of electrochemical chromium-diamond coatings obtained using nanodiamonds made by detonation synthesis and static synthesis (0.1/0). We have studied chrome-plating in standard and dilute electrolytes, making it possible to obtain hard chromium at a temperature of 45 to 48°C and a current density from 50 to 130 A sol;dm2, and also wear-resistant chromium at 52 to 56°C and a current density of 50 A/dm2. We have established that the microhardness increases by 30 to 35% only in the high current density region, and to a greater degree when detonation synthesis nanodiamonds are used. On the other hand, the wear-resistance of the coating is higher when static synthesis diamonds are used, but in this case counterface wear is higher. Furthermore, static synthesis diamonds do not improve the dissipating power of the electrolyte, on which the uniformity of the coating depends. We have established that with respect to overall properties, it is preferable to use detonation synthesis nanodiamonds compared with conventional diamonds of the same size.