Abstract: Friction and wear behavior and mechanism of a type of stainless steel 0Cr17Ni7Al were systematically studied under dry sliding condition with the load range of 25～75 N and the ambient temperature range from 25 ℃ to 400 ℃ by a pin-on-disc high-temperature wear ＆ abrasion tester.The structure,morphology and composition of the worn surface,subsurface and wear debris were examined using XRD,SEM and EDS.The experimental results show that the wear rate tends to increase with the increase of load and ambient temperature.An abrasive wear prevailed at 25 ℃ or under a low load at 200 ℃.With the increase of load,there was a mixed mechanism of adhesive wear and grain wear.An adhesive wear prevailed under a high load at 200 ℃.Fatigue wear occurred as the ambient temperature rose to 400 ℃.The specimen with solution treatment at 1 040 ℃ exhibited the best wear resistance at 25 ℃or under a low load at 200 ℃ while the worst at 400 ℃.