Cutting tests were done using with an individual grain for stainless steel conical rod to clarify the grinding performance of a sintered abrasive grain. In this experiment, the maximum depth of cut to endure and the two components of grinding force can be measured, also the variations of cutting edges of grain are able to estimate from the measured profiles of cut surface. The grain depth of cut is proportional to the value of cutting length in the beginning of cutting, however, it becomes nearly constant when the cutting distance reaches over the some values. The tendency of the constant depth of cut can be explained from the facts that the cutting edges of abrasive grain are tend to fracture in micro scale, which was found from the measured profiles of cut surfaces. Mico-fractured cutting edges of a sintered grain have good grinding charactristics for stainless steel during long cutting time, producing the continuous chips. Thus, the sintered abrasive grains are suitable for heavy grinding of stainless steel because of self-sharpening action of cutting edges and of the relatively large depth of cut for use.