Machining Recommendations for FINEBEAM Drills
High temp. alloys
207
DEEP DRILLING - BTA SYSTEM
USER GUIDE
ISO
Material Condition
Tensile
Strength
[N/mm2]
Material
Group
No.(1)
Hardness
(HB) Chipbreaker
Cutting
speed Vc
(m/min)
Feed : f (mm/rev)
Drill dia. (mm)
25.00 - 43.00 43.01 - 89.00
P
Non-alloy
steel and cast
steel, free
cutting steel
< 0.25 %C Annealed 420 1 125 HF 70 - 130 0.11 - 0.41 0.14-0.45
G 70-130 0.10-0.30 0.12-0.35
>= 0.25
%C Annealed 650 2 190 HF 70-130 0.11-0.41 0.14-0.45
G 70-130 0.10-0.30 0.12-0.35
< 0.55 %C Quenched and
tempered 850 3 250 HF 70-130 0.11-0.41 0.14-0.45
G 70-130 0.10-0.30 0.12-0.35
>= 0.55
%C Annealed 750 4 220 HF 70-130 0.11-0.41 0.14-0.45
G 70-130 0.10-0.30 0.12-0.35
Quenched and
tempered 1000 5 300 HF 70-130 0.11-0.41 0.14-0.45
G 70-130 0.10-0.30 0.12-0.35
Low alloy and cast steel (less
than 5% of alloying elements)
Annealed 600 6 200 HF 70-120 0.11-0.41 0.20-0.45
G 70-120 0.10-0.30 0.12-0.35
Quenched and
tempered
930 7 275 HF 55-110 0.11-0.41 0.20-0.45
G 60-120 0.10-0.30 0.12-0.35
1000 8 300 HF 55-110 0.11-0.41 0.20-0.45
G 60-120 0.10-0.30 0.12-0.35
1200 9 350 HF 55-110 0.11-0.41 0.20-0.45
G 60-120 0.10-0.30 0.12-0.35
High alloyed steel, cast
steel and tool steel
Annealed 680 10 200 HF 55-110 0.11-0.38 0.20-0.40
G 70-130 0.10-0.30 0.12-0.35
Quenched and
tempered 1100 11 325 HF 55-110 0.11-0.38 0.20-0.40
G 70-130 0.10-0.30 0.12-0.35
Stainless steel
and cast steel
Ferritic/martensitic 680 12 200 HF 40-110 0.11-0.41 0.20-0.45
G 70-130 0.10-0.30 0.12-0.35
Martensitic 820 13 240 HF 40-110 0.11-0.41 0.20-0.45
G 70-130 0.10-0.30 0.12-0.35
MStainless steel and cast steel Austenitic, duplex 600 14 180 HF 40-110 0.11-0.41 0.20-0.45
G 70-130 0.10-0.30 0.12-0.35
K
Grey cast iron (GG) Ferritic/pearlitic 15 180 HF 50-110 0.11-0.38 0.24-0.41
G 50-110 0.10-0.25 0.12-0.35
Pearlitic/martensitic 16 260 HF 50-110 0.11-0.38 0.24-0.41
G 50-110 0.10-0.25 0.12-0.35
Nodular cast iron (GGG) Ferritic 17 160 HF 50-110 0.11-0.38 0.24-0.41
G 50-110 0.10-0.25 0.12-0.35
Pearlitic 18 250 HF 50-110 0.11-0.38 0.24-0.41
G 50-110 0.10-0.25 0.12-0.35
Malleable cast iron Ferritic 19 130 HF 50-110 0.11-0.38 0.24-0.41
G 50-110 0.10-0.25 0.12-0.35
Pearlitic 20 230 HF 50-110 0.11-0.38 0.24-0.41
G 50-110 0.10-0.25 0.12-0.35
N
Aluminum-wrought alloys Not hardenable 21 60 HF 65-150 0.09-0.33 0.24-0.35
G 65-130 0.10-0.25 0.12-0.35
Hardenable 22 100 HF 65-150 0.09-0.33 0.24-0.35
G 65-130 0.08-0.23 0.12-0.27
Aluminum-
cast alloys
≤ 12% Si Not hardenable 23 75 HF 65-150 0.09-0.33 0.24-0.35
G 65-130 0.08-0.23 0.12-0.27
Hardenable 24 90 HF 65-150 0.09-0.33 0.24-0.35
G 65-130 0.08-0.23 0.12-0.27
>12% Si High temperature 25 130 HF 65-150 0.09-0.33 0.24-0.35
G 65-130 0.08-0.23 0.12-0.27
Copper alloys
>1% Pb Free cutting 26 110 HF 65-150 0.09-0.33 0.24-0.35
G 65-130 0.08-0.23 0.12-0.27
Brass 27 90 HF 65-150 0.09-0.33 0.24-0.35
G 65-130 0.08-0.23 0.12-0.27
Electrolitic copper 28 100 HF 65-150 0.09-0.33 0.24-0.35
G 65-130 0.08-0.23 0.12-0.27
S
High temp.
alloys
Fe base Annealed 31 200 HF 20-55 0.09-0.30 0.20-0.33
G 20-50 0.08-0.23 0.12-0.27
Hardened 32 280 HF 20-55 0.09-0.30 0.20-0.33
G 20-50 0.08-0.23 0.12-0.27
Ni / Co
base
Annealed 33 250 HF 20-55 0.09-0.30 0.20-0.33
G 20-50 0.08-0.23 0.12-0.27
Hardened 34 350 HF 20-55 0.09-0.30 0.20-0.33
G 20-50 0.08-0.23 0.12-0.27
Cast 35 320 HF 20-55 0.09-0.30 0.20-0.33
G 20-50 0.08-0.23 0.12-0.27
Titanium alloys
Pure 400 36 HF 30-60 0.09-0.30 0.20-0.33
G 30-60 0.08-0.23 0.12-0.27
Alpha+beta alloys
hardened 1050 37 HF 30-60 0.09-0.30 0.20-0.33
G 30-60 0.08-0.23 0.12-0.27
HHardened steel ≥ 40HRC Hardened 38 HF 30-60 0.09-0.30 0.20-0.33
G 30-60 0.08-0.23 0.12-0.27
(1) For material groups see pages 495-524