T. O. 1-1A-9 TABLE 2-8.  SUGGESTED CUTTING SPEEDS AND FEEDS. ALLOY FEED INCH CUTTING SPEED SURFACE TOOL TYPE/GRADE 1/ FT. PER MIN. OPER MATERIAL 302, 304, 309, 0.020-0.040 20-40 Rough High Speed Steel 310, 314, 316 0.008-0.015 50-80 Finish High Speed Steel 0.020-0.040 40-60 Rough Tungsten-Cobalt 0.008-0.015 90-110 Finish Tungsten-Cobalt 0.010-0.030 150-200 Rough Carbide 0.008-0.018 150-300 Finish Carbide 420, 431, 440, 0.015-0.040 20-40 Rough High Speed Steel 442, 446, 347, 321 0.008-0.018 55-90 Finish High Speed Steel 0.015-0.040 40-80 Rough Tungsten-Cobalt 0.008-0.018 100-130 Finish Tungsten-Cobalt 0.015-0.030 165-220 Rough Carbide 0.005-0.015 165-330 Finish Carbide 430F, 416 0.015-0.040 30-60 Rough High Speed Steel 0.008-0.018 75-120 Finish High Speed Steel 0.015-0.040 60-105 Rough Tungsten-Cobalt 0.005-0.015 135-180 Finish Tungsten-Cobalt 0.010-0.030 225-300 Rough Carbide 0.005-0.015 225-450 Finish Carbide 420F 0.015-0.050 25-55 Rough High Speed Steel 303 0.005-0.015 65-105 Finish High Speed Steel 0.020-0.050 50-90 Rough Tungsten-Cobalt 0.005-0.015 100-155 Finish Tungsten-Cobalt 0.010-0.030 175-240 Rough Carbide 0.005-0.015 195-350 Finish Carbide NOTE:    1/  Feeds  cited  are  based  on  turning  1  inch  stock  or  larger.    Feeds  for  smaller  sizes  should  be  reduced proportionally to size of material being turned. 2-72