Abstract: Torque limiting friction couplings are shaft components used to transmit and control torque, which are widely used in machinery, shipbuilding and vehicle industries.The friction plates used are generally steel or cast iron/organic friction materials, with applicable pressures between 1-4 MPa and larger sizes. In metallurgical equipment, operating conditions require large torque transmission, compact structure, short intermittent work, etc., general-purpose torque limiting friction couplings cannot meet their needs.Using wear-resistant materials 38CrMoAl, 42CrMo, 65Mn, and 65Mn as the matrix, a pair of friction pairs were formed. Using universal friction and wear testing machine, DM, SEM and other testing methods were used to study the wear performance and mechanism of different pairs of friction pairs under high and low loads. The results show that under low load conditions, 65Mn-65Mn pair has the least wear loss and the wear amount is 1.1-1.6 times higher than the other two pairs. The wear resistance is best. The wear mechanism is stripping and plastic deformation; under high load wear conditions, the maximum pressure is 75 MPa, and the best matching material is 42CrMo-65Mn, and the wear mechanism is mainly ploughing, chiseling and a small amount of plastic deformation.