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Speeds & Feeds

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Speeds and Feeds
MATERIALBRINELLDRILLSREAMERSTAPS - S.F.M.
S.F.MPOINTFEEDS.F.M.FEEDTHREADS PER INCH
3-7 1/28-1516-2425-UP
Aluminum99-101200-250118ºM150-160M50100150200
 Aluminum bronze170-18760118ºM40-45M12254560
 Bakelite---8060-90ºM50-60M50100150200
 Brass192-202200-250118ºH150-160H50100150200
 Bronze, common166-183200-250118ºH150-160H4080100150
 Bronze, phosphor, 1/2 hard187-202175-180118ºM130-140M25405080
 Bronze, phosphor, soft149-163200-250118ºH150-160H4080100150
 Cast iron, soft126140-15090ºH100-110H306090140
 Cast iron, medium soft19680-110118ºM50-65M25405080
 Cast iron, hard293-30245-50118ºL67-75L10203040
 Cast iron, chilled*40215150ºL8-10L551010
 Cast steel286-30240-50*118ºL70-75L20304050
 Celluloid---10090ºM75-80M50100150200
 Copper80-8570100ºL45-55L4080100150
 Drop forging (steel)170-19660118ºM40-45M12254560
 Duralumin90-104200118ºM150-160M50100150200
 Everdur179-20760118ºL40-45L20304050
 Machinery steel170-196110118ºH67-75H35506085
 Magnet steel, soft241-30235-40118ºM20-25M20405075
 Magnet steel, hard*321-51215150ºL10L5101525
 Manganese steel, 7-13*187-21715150ºL10L15202530
 Manganese copper, 30 Mn.*13415150ºL10-12L------------
 Malleable iron112-12685-90118ºH---H20304050
 Mild steel, .20-.30C170-202110-120118ºH75-85H40557090
 Molybdenum steel196-23555125ºM35-45M20303545
 Monel metal149-17050118ºM35-38M8101520
 Nickel, pure*187-20275118ºL40L25405080
 Nickel steel, 3-1/2%196-24160118ºL40-45L8101520
 Rubber, hard---10060-90ºL70-80L50100150200
 Screw stock, C.R.170-196110118ºH75H20304050
 Spring steel40220150ºL12-15L10101515
 Stainless steel146-14950118ºM30M8101520
 Stainless steel, C.R.*460-47720118ºL15L8101520
 Steel, .40 to .50C170-19680118ºM8-10M20304050
 Tool, S.A.E., and Forging steel14975118ºH35-40H25354555
 Tool, S.A.E., and Forging steel24150125ºM12M15152525
Tool, S.A.E., and Forging steel*40215150ºL10L8101520
 Zinc alloy112-126200-250118ºM150-175M50100150200


Drill Feed Per Revolution in InchesReamer Feed
REFERENCE
SYMBOL
DIAMETER OF DRILL - INCHESALL DIAMETERS
UNDER 1/81/8 TO 1/41/4 TO 1/21/2 TO 1OVER 1"
DIAMETER
Use a feed equal to
two or three times that
recommended for drills.
L - Light.001.002.003.005.006
M - Medium.0015.003.006.010.012
H - Heavy.0025.005.010.020.025
This information is provided as a reference only and may vary depending on the manufacturer.

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