The corrosive wear behavior of Cr-Mn-N series casting stainless steel

The corrosive wear behavior of Cr-Mn-N stainless steel with additions of Cu and Mo in solutions of H2SO4, HNO3, HAC has been investigated. Its corrosive wear resistance is much better than that of 304 stainless steel. A new. method, which can be used to indicate the wear resistance of materials by relationship of consumed energy and scratch volume in single pendulum grooving, has been utilized. This method is simpler, quicker and allows measurement of energy dissipated in a scratching event with much Limited scatter. Moreover, the tester can simulate a single event of an abrasive element's scratching with impact across a surface and magnify the event into convenient dimensions for structure or wear mechanism. The reason why the Cr-Mn-N stainless steel has a better corrosive wear resistance than 304 stainless steel is that the former is more likely to engender deformation strengthening than the later except for their similar corrosive resistance. This material can be used as product of pump and valve in wear condition in chemical industry. (C) 1999 Elsevier Science S.A. All rights reserved.