The cutting parameters such as cutting speed, feed rate and depth of cut are effective on tool wear. The dominant factor is cutting speed, feed rate and depth of cut follow it. The main tooll wear types are flank wear and nose wear and also notch wear end of depth of cut. The main wear mechanisms are abrassive wear, and addesive wear and difüssion wear in high speed machining conditiong that high ptemperature is occured on tool face.