Page 29 - HOLE MAKING CATALOG p149-184

USER GUIDE
ISO

SOLID CARBIDE DRILLS
Recommended Machining Conditions for Solid Carbide Drills D=0.8-2.9 mm

Material Condition Tensile Hardness Material Cutting Feed (mm/rev) vs. Drill Diameter
Strength HB No.(1) Speed Vc
Non-alloy < 0.25 %C Annealed [N/mm2] (m/min) Ø0.8-1.4 Ø1.5-1.9 Ø2-2.4 Ø2.5-2.9
steel and cast >= 0.25 %C Annealed 125 1 50-100
steel, free Quenched and 420 190 2 40-100 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
cutting steel < 0.55 %C tempered 650 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
Annealed 250 3 40-85
>= 0.55 %C Quenched and 850 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
tempered 220 4 40-85
Annealed 750 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
300 5 40-85
Quenched and 1000 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
tempered 200 6 40-75
P Low alloy and cast steel (less 600 275 7 40-60 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
than 5% of alloying elements) Annealed 930 300 8 40-60 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
Quenched and 1000 350 9 40-60 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
High alloyed steel, cast 1200 200 10 30-50 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
steel and tool steel tempered 680 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
Ferritic/ 325 11 30-50
martensitic 1100 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
Martensitic 200 12 20-35
Stainless steel and cast steel Austenitic 680 0.03-0.06 0.04-0.08 0.05-0.10 0.06-0.10
Ferritic/pearlitic 240 13 20-35
M Stainless steel Pearlitic 820 180 14 20-35 0.03-0.06 0.04-0.08 0.05-0.10 0.06-0.10
Grey cast iron (GG) Ferritic 600 180 15 40-80 0.03-0.06 0.04-0.08 0.05-0.10 0.06-0.10
Pearlitic 260 16 40-70 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
K Nodular cast iron (GGG) Ferritic 160 17 40-95 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
Pearlitic 250 18 50-95 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
Malleable cast iron Not cureable 130 19 40-80 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
Cured 230 20 40-80 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
Aluminum- wrought alloy Not cureable 60 21 80-150 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
Cured 100 22 80-150 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
Aluminum- <=12% Si High temperature 75 23 80-150 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
cast, alloyed Free cutting 90 24 80-150 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
>12% Si Brass 130 25 80-150 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
N Copper alloys >1% Pb Electrolitic copper 110 26 80-150 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
Duroplastics, 90 27 50-150 0.03-0.10 0.05-0.15 0.07-0.17 0.08-0.20
fiber plastics 100 28 60-160 0.05-0.12 0.07-0.15 0.08-0.18 0.09-0.18
0.05-0.15 0.07-0.18 0.08-0.20 0.09-0.22
Hard rubber 29
Non-metallic
30

Fe based Annealed 200 31 10-20 0.02-0.04 0.03-0.06 0.04-0.07 0.04-0.08
0.03-0.06 0.04-0.07 0.04-0.08
High temp. Ni or Co Cured 280 32 10-20 0.02-0.04 0.03-0.06 0.04-0.07 0.04-0.08
alloys based Annealed 250 33 10-20 0.02-0.04 0.03-0.06 0.04-0.07 0.04-0.08
350 34 10-20 0.02-0.04 0.03-0.06 0.04-0.07 0.04-0.08
S Cured 320 35 10-20 0.02-0.04 0.02-0.03 0.03-0.04 0.03-0.04
Cast
0.02-0.03 0.03-0.04 0.03-0.04
RM 400 36 10-20 0.02-0.03
0.01-0.02 0.02-0.03 0.02-0.03
Titanium Ti alloys Alpha+beta RM 1050 37 10-20 0.02-0.03 0.01-0.02 0.02-0.03 0.02-0.03
alloys cured 0.01-0.02 0.02-0.03 0.02-0.03
0.01-0.02 0.02-0.03 0.02-0.03
Hardened steel Hardened 55 HRC 38 10-20 0.01-0.02
H Chilled cast iron Hardened 60 HRC 39 10-20 0.01-0.02
40 10-20 0.01-0.02
Cast 400

Cast iron Hardened 55 HRC 41 10-20 0.01-0.02

• For drill with lengh to diameter ratio larger than 6xD, reduce feed by 20%
• If the RPM exceeds 10,000, a dynamic balance should be done to the system
• Maximal radial and axial runout should not exceed 0.01 mm
• As a starting value, the middle of the recommended machining range should be used, then (according to wear results),
conditions can be changed in order to optimize performance.
(1) For workpiece materials list, see pages 495-524

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