In the wear test of iron and steel materials, the wear resistance can be obtained by taking the reciprocal of the wear amount, that is:

Where, ε Is the wear resistance of the material (g-1), and F is the wear amount of the material within the specified time (g).

Based on an iron and steel wear-resistant material, such as mnl3cr2, the relative wear-resistant coefficient can be calculated by the formula:

Where, ε Is the relative wear resistance coefficient, α and β The wear weight loss of wear sample and reference sample respectively.

The results of two-body pin disc wear test are shown in Figure 2. The unit wear weight loss of bainite Martian multiphase wear-resistant cast steel is 0.166mg/min, and the unit wear weight loss of mnl3cr2 is 0.492mg/min. It can be seen in Figure 2 that the wear weight loss changes linearly in the whole experimental process. The relative wear coefficient f between bainite martensite composite wear-resistant cast steel and mnl3cr2 is 2.97, that is, in the two-body friction and wear experiment, the wear resistance of bainite martensite composite wear-resistant cast steel is nearly three times that of mnl3cr2.