Surface properties such as roughness are critical to the functional ability of machine components. Increased understanding of the surface generation mechanisms can be used to optimize machining process and to improve functional ability of the component [14]. Numerous investigators have been conducted to determine the effect of parameters such as feed rate, tool nose radius, cutting speed and depth of cut on surface roughness in hard turning operation [15-17]. The surface roughness decreases with increasing nose radius. Large nose radius tools have produced better surface finish than small nose radius tools [18].