GE-INTERNATIONAL JOURNAL OF ENGINEERING RESEARCH COMPARATIVE EVALUATION OF ABRASIVE WEAR RESISTANCE OF VARIOUS STAINLESS STEEL GRADES
Stainless steels are widely used materials due to their excellent corrosion resistance properties. Martensitic stainless have added advantage of higher hardness / strength over other stainless steels. Because of higher hardness, martensitic stainless steel grades are also used for applications involving abrasive media. However, relative data on wear resistance of stainless steels is not available in open literature. In view of this, abrasive wear studies on stainless steel grades AISI 420, AISI
... 440C, CA6NM (13Cr-4Ni) and 17-4PH (AISI 630) have been conducted using a dry/sand rubber wheel test according to standard ASTMG65. Samples of all grades were heat treated to obtain desired hardness values and then abrasive wear tests were carried out. Silica quartz sand in size range of 211 to 297 µm was used as an abrasive medium. Samples were characterized for all relevant properties before wear test and evaluated for wear pattern of surface after wear test using optical and scanning electron microscope. It is observed that AISI 440C possesses highest abrasive wear resistance among the four grades investigated.