Abstract: A self-made friction tester was used to investigate the tribological properties of SUS304 metastable Stainless steel against DC53 under the condition of friction coupling deformation. Plastic deformation ,Micro structure and wear morphology were analyzed to understand the tribological properties of austenitic stainless steel. Results showed that friction coefficient firstly increased and then decreased with increasing of normal load. However, it reduced as sliding speed increased. Plastic deformation of stainless steel with testing duration followed A logarithmic function. The main wear mechanisms of austenitic stainless steel were adhesive wear and abrasive wear.