Hot rolling medium manganese steel of BTW was selected as the testing material,and its abrasive wear properties were studied in the experimental machine of ML100 with soft clay as soft abrasive and quartz sand as hard abrasive.SEM was used to investigate the wear mechanism of BTW steel.The results show that the relative wear resistance of the hot rolling austenite medium manganese steel and high manganese steel is lower than that of the martensitic wear resistant steel under the condition of soft abrasive wear.Under the condition of the hard abrasive wear,the relative wear resistance of the hot rolling austenite medium manganese steel is higher than that of the high manganese steel and martensitic wear resistant steel and it is shown that the hot rolling austenite medium manganese steel is more suitable for the hard abrasive wear condition.The working hardening of hot rolled medium manganese steel is higher than that of hot rolled high manganese steel in both soft and hard abrasive wear conditions,which shows the better work hardening performance.The abrasion mechanism of hot rolled high manganese steel in slime powder soft abrasive wear is microcutting wear,accompanied by the local fatigue spalling.The wear mechanism of hot rolled high manganese steel in quartz sand hard abrasive is the typical cutting wear and microcutting wear.