To　explore　feasibility　of　AISI　630　steel　applied　to　slipper/swashplate　pair　of　a　water　hydraulic　pump.　Frictional　corrosion　experiment　simulating　slipper/swashplate　pair　operation　was　systematically　conducted　under　three　different　lubricating　conditions,　and　the　influence　of　lubricating　medium　and　solution　aging　on　corrosion　wear　of　AISI　630　steel　and　indirect　corrosion　wear　of　its　dual　PEEK　surface　were　evaluated　by　means　of　scanning　electron　microscopy,　X-ray　photoelectron　spectroscopy,　and　electrochemical　corrosion　test　analysis.　It　was　shown　that　synergistic　effect　of　corrosion　and　wear　played　an　important　role　on　wear　of　AISI　630　steel　and　occupied　up　to　25%　of　its　total　wear　loss.　Solution　aging　of　AISI　630　steel　could　help　to　decrease　wear　rate　of　its　dual　PEEK　surface　in　freshwater,　but　would　significantly　increase　friction　coefficient　and　wear　rate　of　AISI　630　in　seawater　and　aggravate　the　wear　and　indirect　corrosion　wear　of　its　dual　PEEK　surface.　Therefore,　for　the　water　hydraulic　slipper/swashplate　pair,　it　is　suggested　that　when　taking　service　in　freshwater,　solution　aging　of　AISI　630　steel　can　be　considered　to　alleviate　wear　of　its　dual　PEEK　surface,　but　when　taking　service　in　seawater,　solution　aging　is　not　recommended,　and　the　original　AISI　630　steel　is　more　conducive　to　obtain　preferable　friction　and　wear　performance.