APPLICATION MATERIAL GROUPS (AMG) CHART  

End Mills printer friendly version Type of Drill
(SQUARE END) Single End 2-Flute Single End 3-Flute Single End 4-Flute Single End 2-Flute Single End 4-Flute Single End 2-Flute Single End 4-Flute Single End 3-Flute

HOW TO USE THIS CHART:
Match Your Workpiece Material
Identify End Mill Options
Determine Surface Feet Per Minute (SFM)
See Catalog Page For Sizes
Determine Feed Per Tooth (see below)

Note: Contact Precision Twist Drill
Technical Services for applications not listed.

 Material Group BHN
Hardness 		Normal
Chip Form 		Material Type    Surface Feet Per Minute
 1. Steel
1.1 Magnetic Soft Steel, Leaded Steels 120 Extra Long 1116, 1118, 1212 10L18, 12L13, 12L14 290 325 360 400 290 325 360 400 360 400 450 500 290 325 360 400 360 400 450 500 250 290 325 360 325 360 400 450 -- -- --
1.2 Structural Steel, Case
Carburizing Steel 		200 Medium/Long 30, 55 70, 100 225 250 270 300 225 250 270 300 325 375 415 450 225 250 270 300 325 375 415 450 200 225 250 270 300 340 375 400 -- -- --
1.3 Plain Carbon Steel Low, Medium Carbon 250 Long 1008, 1010, 1020 1040, 1055, 1524 225 250 270 300 225 250 270 300 325 375 415 450 225 250 270 300 325 375 415 450 200 225 250 270 300 340 375 400 -- -- --
1.4 Alloyed Steel, Medium Carbon,
Tool Steel, Wrought 		250 Long 4140, 4150, 4340 A2, 01, D2 180 200 230 260 180 200 230 260 300 340 380 425 180 200 230 260 300 340 380 425 160 180 200 240 275 315 350 390 -- -- --
1.5 Alloyed Steel, Hardened and
Tempered Steel, Tool Steel 		250
350 		Long 01, L6, D3, A2, 4140 4150, 4340, 8620, 8630 160 180 200 230 160 180 200 230 250 300 360 400 160 180 200 230 250 300 360 400 145 160 180 200 225 270 325 360 -- -- --
1.6 Alloyed Steel, Hardened and
Tempered Steel, Tool Steel 		350
400 		Long 01, L6 D3, A2, 4140 4150, 4340, 8620, 8630 150 160 180 200 150 160 180 200 200 240 280 330 150 160 180 200 200 240 280 330 150 180 210 250 180 220 250 300 150 160 200
 2. Stainless Steel
2.1 Free Machining Stainless Steel 250 Medium 303, 416 430F, 440F 200 250 300 325 200 250 300 325 240 275 325 350 200 250 300 325 240 275 325 350 180 210 250 300 200 240 225 325 200 250 325
2.2 Austenitic 250 Long 304, 310, 316 321, Nitronic 50 140 160 190 225 140 160 190 225 170 200 240 275 140 160 190 225 170 200 240 275 110 130 150 180 140 160 190 225 140 160 225
2.3 Ferritic + Austenitic, Ferritic,
Martensitic 		300 Long 409, 430, 436 304, 440A, 440C 110 130 150 175 110 130 150 175 130 150 175 200 110 130 150 175 130 150 175 200 100 120 140 170 115 130 150 165 110 130 175
2.4 Precipitation Hardened 300 Long 15-5PH Custom 450 17-4PH 90 110 125 150 90 110 125 150 100 120 150 180 90 110 125 150 100 120 150 180 75 90 110 125 90 110 125 150 90 110 150
 3. Cast Iron
3.1 Soft Gray Cast, Ferritic 150 Extra Short ASTM A48 Class 20, 40 G3000 375 -- 490 550 375 -- 490 550 450 -- 650 700 375 -- 490 550 450 -- 650 700 300 -- 425 500 360 -- 500 600 -- -- --
3.2 Soft Gray Cast, Pearlitic > 150
260 		Extra Short ASTM A48 Class 40, 60 G3500, G4000 320 -- 450 525 320 -- 450 525 380 -- 540 650 320 -- 450 525 380 -- 540 650 250 -- 350 400 300 -- 430 510 -- -- --
3.3 Nodular Graphite,
Malleable Cast Iron 		> 150
250 		Medium/Short ASTM A220 Grade 40010
SAE J158 Grade M4504 		ASTM A602 Grade M4504 320 -- 450 525 320 -- 450 525 380 -- 540 650 320 -- 450 525 380 -- 540 650 250 -- 350 400 300 -- 450 510 -- -- --
3.4 Nodular Graphite,
Malleable Cast Iron 		> 250
320 		Medium/Short ASTM A220 Grade 80002
ASTM A602 Grade M8501 		ASTM A220 Grade 90001 250 -- 330 375 250 -- 330 375 280 -- 400 430 250 -- 330 375 280 -- 400 430 200 -- 300 340 230 200 340 400 -- -- --
 4. Titanium
4.1 Titanium, Unalloyed 200 Extra Long Commercially Pure 99.0   -- -- 200 230 -- -- 200 230 -- -- 230 260 -- -- 200 230 -- -- 230 260 -- -- 180 200 -- -- 200 230 160 185 230
4.2 Titanium Alloy, Cast 270 Medium/Short ASTM B367 Grades C-1 - C-7A -- -- 180 200 -- -- 180 200 -- -- 200 230 -- -- 180 200 -- -- 200 230 -- -- 165 180 -- -- 190 210 145 180 200
4.3 Titanium Alloys > 270
350 		Medium/Short T16AL4V
T16AL6V2SN 		  -- -- -- 190 -- -- -- 190 -- -- -- 200 -- -- -- 190 -- -- -- 200 -- -- -- 175 -- -- -- 180 130 150 190
 5. Nickel
5.1 Nickel, Unalloyed 150 Extra Long Nickel 200, Nickel 230   -- 185 200 230 -- 185 200 230 -- 210 230 265 -- 185 200 230 -- 210 230 265 -- 165 180 200 -- 190 210 235 170 185 230
5.2 Nickel Alloys > 150
240 		Long Nimonic 75
Monel 400 		Hastelloy C
Inconel 600 		-- -- -- 160 -- -- -- 160 -- -- -- 200 -- -- -- 160 -- -- -- 200 -- -- -- 140 -- -- -- 180 115 130 160
5.3 Nickel Alloys >240
400 		Long Nimonic 80
Inconel 718 		Inconel 825 -- -- -- 100 -- -- -- 100 -- -- -- 130 -- -- -- 100 -- -- -- 130 -- -- -- 85 -- -- -- 115 65 75 100
 6. Copper
6.1 Copper Alloys, Wrought 100Rb Extra Long 101, 130, 170 630, 725 650 -- 750 -- 650 -- 750 -- 680 -- 780 -- 650 -- 750 -- 680 -- 780 -- 585 -- 675 -- 615 -- 700