College of Aeronautics, (Cranfield)2016-10-212016-10-211963-12http://dspace.lib.cranfield.ac.uk/handle/1826/10814Tools of grade CLV were tested at 300 fpm cutting speed, 0.010 in./rev. feed and 0.10 in. depth of cut to 0.030 in. flankwear. The results gave a mean tool life of 37 minutes which should be compared with the results given in Report No. PLB0/1 for grades CLV 403, A, B and C.enReport