This chapter explains the effect of the gas nitration process on the wear behaviour of the crankshaft. For this purpose, 15 hours of gas nitration was applied to the crankshaft at a temperature of 520oC. As a result of the gas nitration, the hardness and microstructure images were taken separately from the nitrided and non-nitrided samples. In order to compare the abrasion behavior of nitrided and non-nitrided samples, a back and forth abrasion test was applied. 20N, 40N and 60N were determined as the load and subjected to an abrasive wear test. Test results vary depending on distance traveled and load applied. 100Cr6 balls are used as abrasive and nitrided and non-nitrided crankshaft is used as counter material. Compared to the wear resistance of nitrided crankshaft samples, an increase in wear resistance of about 20% was observed in non-nitrided samples.