CUTTING SPEEDS MILLING
Recommended Starting Speeds v c (ft/min) MK1430 P1430 f z (inch) f z (inch)
Brinell Hardness HB
Rockwell Hardness HRC
Tensile Strength MPa
Material Group
ISO
Workpiece Material
.004 .008 .012 .004 .008 .012
Low-Carbon Steels, Long Chipping (C < .25%) Ex. A36, 1008, 1010, 1018, 1108, 1117
PO
<125
<530 920 720 590 920 720 590
Low-Carbon Steels, Short Chipping, Free Machining (C < .25%) Ex. 10L18, 1200 Series, 1213, 12L14
P1
<125
<530 820 655 490 820 655 490
Medium- and High-Carbon Steels (C > .25%) Ex. 1035, 1045, 10L45, 1080, 1137, 1144, 1525, 1572
P2
<220
<25
>530 720 590 480 720 590 480
Alloy Steels and Tool Steels (C > .25%) Ex. P20, 1300, 2000, 3000, 4000, 5000, 8000, SAE A, D, H, O, S, M, T High-Strength Alloy Steels and Tool Steels (C > .25%) Ex. P20, 1300, 2000, 3000, 4000, 5000, 8000, SAE A, D, H, O, S, M, T
P Steel
P3
<330
<35 600-850 655 560 460 655 560 460
P4
340-450 35-48 850-1400 590 490 390 590 490 390
Ferritic, Martensitic and PH Stainless Steels Ex. 13-8 PH, 15-5 PH, 17-4 PH, 400 and 500 Series
P5
<330
<35 600-900 680 575 470 680 575 470
High-Strength Ferritic, Martensitic and PH Stainless Steels Ex. 13-8 PH, 15-5 PH, 17-4 PH, 400 and 500 Series
P6
340-450 35-48 900-1350 525 460 390 525 460 390
Recommended Starting Speeds v c (ft/min) MK1430 f z (inch)
Brinell Hardness HB
Rockwell Hardness HRC
Tensile Strength MPa
Material Group
ISO
Workpiece Material
.004 .008 .012
Austenitic Stainless Steels Ex. 200 Series, 301, 302, 304, 304L, 309
M1
130-200
<600 590 525 460
M Stainless Steel
High-Strength Austenitic Stainless and Cast Stainless Steels Ex. 310, 316, 316L, 321, 347, 384
M2
150-230 <25 600-800 525 390 330
Duplex Stainless Steels Ex. 323, 329, F55, 2205
M3
135-275 <30 <800 560 490 425
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