For the mixture of three kinds of individual powders, Eq. (9) shows that HW is only related to the HW and MP of each kind of individual powders yet. At the same time, relevant experiments were carried out to verify this equation. In this study, eight kinds of mixture with three kinds of different individual powders were investigated. Table 1 shows that the absolute values of difference between CV and EV were all lower than 1%, which indicated that the calculated values were satisfactory with experimental values. For that, it is feasible that the derived equation was used to evaluate the HW of mixed powder with three kinds of different individual powders.