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Speed & Feed Rates

Recommended Cutting Speeds in Feet per Minute

Material
Tool Steels
Hardness, HB*Material
Condition*
Cutting Speed, fpm
DrillingReaming
HSSHSSCarbide
Water Hardening

W1, W2, W5150-209A8535200

Shock Resisting
S1, S2, S5, S6, S7175-225A5035175

Cold Work, Oil Hardening
O1, O2, O6, O7175-225A4530150

Cold Work, High Carbon High
Chromium, D2, D3, D4, D5, D7200-250A302080

Cold Work, Air Hardening
A2, A3, A8, A9, A10210-250A5035150
A4, A6A4530125
A7A3020100

Hot Work, Chromium Type
H10, H11, H12, H13, H14, H19150-200A6040200
200-250A5030150
325-375Q and T3020100

Hot Work, Tungsten Type
H21, H22, H23, H24, H25, H26150-200A5535150
200-250A4025125

Hot Work, Molybdenum Type
H41, H42, H43150-200A4530150
200-250A3520125

Special Purpose, Low Alloy
L2, L3, L6150-200A6040200

Mold
P2, P3, P4, P5, P6100-150A7550225
P20, P21150-200A6040200

High-Speed Steel
M1, M2, M6, M10, T1, T2, T6200-250A4530150
M3-1, M4, M7, M30, M33,
M34, M36, M41, M42,
M43,
M44, M46, M47, T5, T8
225-275A3520100
T15, M3-2225-275A251580
Material
Stainless Steels
Hardness, HB*Material
Condition*
Cutting Speed, fpm
DrillingReaming
HSSHSSCarbide
Free Machining Stainless Steel
Ferritic 430F, 430F Se135-185A9060250
Austenitic 203EZ, 303, 303 Se, 303 MA, 303 Pb,
303 Cu, 303 Plus X
135-185A8555225
225-275CD7045200
Martensitic 416, 416 Se, 416 Plus X, 420F, 420F Se, 440F, 440F Se135-185A9060250
185-240CD7045200
275-325Q and T4025150
375-425Q and T201080

Stainless Steels

Ferritic 405, 409, 429, 430, 434, 436, 442, 445, 502135-185A6545200
Austenitic 201, 202, 301, 302, 304, 304L, 305, 308, 321, 347, 348135-185A5535150
225-275CD5030125
Austenitic 302B, 309, 309S, 310, 310S, 314, 316, 316L, 317, 330135-185A5030150
Martensitic 403, 410, 420, 501135-175A7550225
175-225A6545200
275-325Q and T4025125
375-425Q and T251580
Martensitic 414, 431
Greek Ascoloy
225-275A5030150
275-325Q and T4025125
375-425Q and T251580
Martesitic, 440A, 440B, 440C225-275A4530125
275-325Q and T4025100
375-425Q and T201075
Precipitation Hardening 15-5PH, 17-4PH, 17-7Ph,

17-14Cu Mo, AF-71, AFC-77, AM-350, AM-355,
AM-362,
Custom 455, HNM, PH13-8, PH14-8Mo,
PH15-7Mo, Stainless W
150-200A5030150
275-325H4525125
325-375H352075
375-425H201050
Material
Copper Alloys
(Copper Alloy Nos. as per the Copper Development Assn. Inc.)
Material
Condition*
Cutting Speed, fpm
DrillingReaming
HSSHSSHSS
314 Leaded Commercial Bronze
332 High Leaded Brass
340 Medium Leaded Brass
342 High Leaded Brass
353 High Leaded Brass
356 Extra High Leaded Brass
360 Free Cutting Brass
370 Free Cutting Muntz Metal
377 Forging Brass
385 Architectural Bronze
485 Leaded Naval Brass
544 Free Cutting Phosphor Bronze
A160160320
CD175175360
226 Jewelry Bronze
230 Red Brass
240 Low Brass
260 Cartridge Brass 70%
268 Yellow Brass
280 Muntz Metal
335 Low Leaded Brass
365 Leaded Muntz Metal
368 Leaded Muntz Metal
443 Admiralty Brass (inhibited)
445 Admiralty Brass (inhibited)
651 Low Silicon Bronze
655 High Silicon Bronze
675 Manganese Bronze
687 Aluminum Brass
770 Nickel Silver
796 Leaded Nickel Silver
A120110250
CD140120275
102 Oxygen Free Copper
110 Electrolytic Tough Pitch Copper
122 Phosphorus Deoxidized Copper
170 Beryllium Copper
172 Beryllium Copper
175 Beryllium Copper
210 Guilding 95%
220 Commercial Bronze
502 Phosphor Bronze 1.25%
510 Phosphor Bronze 5%
521 Phosphor Bronze 8%
524 Phosphor Bronze 10%
614 Aluminum Bronze
706 Copper Nickel 10%
715 Copper Nickel 30%
745 Nickel Silver
752 Nickel Silver
754 Nickel Silver
757 Nickel Silver
A6050180
CD6560200
TCT-Reamer-Chart

Recommended material for

Hole DiameterMaterial Left (Diameter)
.090-.170.005-.010
.171-.280.008-.012
.281-.880.010-.016
.881-2.50.015-.030
0500-Drill

Feeds for Drilling

FeedsDiameter
.001-.003 IPR.1250 or less
.002-.006 IPR.1250-.250
.004-.010 IPR.250-.500
.007-.015 IPR.500-1.00
.010-.025 IPR1.00 and up

Metric-to-Standard Conversion Formula (millimeters to inches)
mm 4 25.4 = inches
Example:
12.70 mm 4 25.4 = .500 inches

Calculating Revolutions Per Minute (RPM) from Surface Footage (SFPM) Diameter
12 x SFPM = RPM
p x diameter

Speeds and Feeds
.002 – .003 per flute per revolution
.0025 x number of flutes
= inches per revolution

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Suite 1
Freeport, IL 61032
Toll: 800.851.2874 Fax: 815.233.9279
sales@protocutter.com