Transcription of High Speed Steel & Cobalt Drills Drills Speed and Feed ...
1 Speed Steel & Cobalt DrillsSpeed and feed RecommendationsNOTE: The speeds and feeds shown are suggested starting points only and may be increased or decreased depending on actual material and machining conditions. Start conservatively and increase Speed and feed until drilling cycle is MATERIALBRINELLHARDNESSBHNSURFACESPEEDSF MFEED PER REVOLUTION BY DRILL DIAMETER1/8"1/4"1/2"3/4"1"Low Carbon Steel1018, 12L12, 1108, 1213 & Medium Carbon Steel1018, 1551, 11L44120 - Carbon and Alloyed Steel1040, 1140, 4340, 8640 and Die SteelsP20, A2, D2, H12 and Die SteelsP20, A2, D2, H12250 - Machining Stainless Steels303, 410, 416, 440F Machining Stainless Steels304, 316 Machining Stainless Steels17-4PH, 316L, AM350 IronSoft Gray IronGray160 - IronMalleable250 - AlloysCommercially Pure - AlloysTi-6Ai-4V, ASTM B367 Grades C-3, C-4 Temperature AlloysInconel, Hastelloy, Waspaloy Temperature AlloysInconel, Hastelloy, Waspaloy150 - Alloys2025, 6061, A140.
2 AlloysBrass and Bronze & Plastics AlloysAZ80A, HM12A, AM60A, ZE41A50 - Coatings Also Availabl