b) Company JZ has developed a new material and they want to determine the machinability rating of this new material. The base material (B1112) result in a Taylor equation with n and C estimated as 0.25 and 460 respectively. For the new material, the Taylor parameter were 0.22 and 420 for n and C, respectively. In both cases, speed is in m/min while tool life is in min. These results were obtained using HSS tool. i) Develop a machinability rating for the new material using cutting speed for a 40-mins tool life as the basis of comparison. ii) If the machinability criterion were tool life of cutting speed of 150m/min, compute the machinability rating for the new material.