Machining Recommendations for FINEBEAM Drills

Tensile ShMaterial GHdCutting d VFeed : f Drill d(mm/rev) ia(mm)
ISO MaterialConditiontrengt [N/mm2]roup No.(1)arness (HB)Chipbreakerspeec (m/min)25.00 - 43.00. 43.01 - 89.00
< 025 %CAnnealed4201125HF70-1300.11-0.410.14-0.45
.G70-1300.10-0.300.12-0.35
Non-alloy >= 0.25 %CAnnealed6502190HF G70-130 70-1300.11-0.41 0.10-0.300.14-0.45 0.12-0.35
steel and castQuenched andHF70-1300.11-0.410.14-0.45
steel, free < 0.55 %Ctempered8503250G70-1300.10-0.300.12-0.35
cutting steel >= 0.55Annld7504220HF70-1300.11-0.410.14-0.45
%CeaeG70-1300.10-0.300.12-0.35
Quenched and10005300HF70-1300.11-0.410.14-0.45
temperedG70-1300.10-0.300.12-0.35
Annealed6006200HF G70-120 70-1200.11-0.41 0.10-0.300.20-0.45 0.12-0.35
PHF55-1100.11-0.410.20-0.45
Low alloy and cast steel (less9307275G60-1200.10-0.300.12-0.35
than 5% of alloying elements)Quenched and10008300HF55-1100.11-0.410.20-0.45
temperedG60-1200.10-0.300.12-0.35
12009350HF G55-110 60-1200.11-0.41 0.10-0.300.20-0.45 0.12-0.35
High alloyed steel, castAnnealed68010200HF G55-110 70-1300.11-0.38 0.10-0.300.20-0.40 0.12-0.35
steel and tool steelHigh Quenched andtemp. alloys 110011325HF55-1100.11-0.380.20-0.40
temperedG HF70-130 40-1100.10-0.30 011-0410.12-0.35 020-045
Stainless steelFerritic/martensitic68012200G70-130.. 0.10-0.30.. 0.12-0.35
and cast steelMartensitic82013240HF G40-110 70-1300.11-0.41 0.10-0.300.20-0.45 0.12-0.35
M Stainless steel and cast steelAustenitic, duplex60014180HF G40-110 70-1300.11-0.41 0.10-0.300.20-0.45 0.12-0.35
Fii/lii1180HF50-1100.11-0.380.24-0.41
Grey cast iron (GG)errtcpeartc5G HF50-110 501100.10-0.25 0110380.12-0.35 024041
Pearlitic/martensitic16260G- 50-110.-. 0.10-0.25.-. 0.12-0.35
HF50-1100.11-0.380.24-0.41
K Nodular cast iron (GGG)Ferritic17160G50-1100.10-0.250.12-0.35
Pearlitic18250HF50-1100.11-0.380.24-0.41
G50-1100.10-0.250.12-0.35
Ferritic19130HF50-1100.11-0.380.24-0.41
Malleable cast ironG HF50-110 50-1100.10-0.25 0.11-0.380.12-0.35 0.24-0.41
Pearlitic20230G50-1100.10-0.250.12-0.35
Aliht llNot hardenable2160HF G65-150 65-1300.09-0.33 0.10-0.250.24-0.35 0.12-0.35
umnum-wroug aoysHardenable22100HF G65-150 65-1300.09-0.33 0.08-0.230.24-0.35 0.12-0.27
Not hardenable2375HF G65-150 65-1300.09-0.33 0.08-0.230.24-0.35 0.12-0.27
N Aluminum- cast alloys ≤ 12% SiHardenable2490HF G65-150 65-1300.09-0.33 0.08-0.230.24-0.35 0.12-0.27
>12% SiHigh temperature25130HF G65-150 65-1300.09-0.33 0.08-0.230.24-0.35 0.12-0.27
>1% PbFree cutting26110HF G65-150 65-1300.09-0.33 0.08-0.230.24-0.35 0.12-0.27
Copper alloysBrass2790HF G65-150 65-1300.09-0.33 0.08-0.230.24-0.35 0.12-0.27
Eltliti28100HF65-1500.09-0.330.24-0.35
ecroc copperG65-1300.08-0.230.12-0.27
Fe baseAnnealed31200HF G20-55 20-500.09-0.30 0.08-0.230.20-0.33 0.12-0.27
HF20-550.09-0.300.20-0.33
Hardened32280G20-500.08-0.230.12-0.27
High temp.Annealed33250HF20-550.09-0.300.20-0.33
alloys Ni / CoG HF20-50 20-550.08-0.23 009-0300.12-0.27 020-033
S baseHardened34350G20-50.. 0.08-0.23.. 0.12-0.27
Ct35320HF20-550.09-0.300.20-0.33
asG20-500.08-0.230.12-0.27
Pure40036HF30-600.09-0.300.20-0.33
Titanium alloysAlpha+beta alloysG HF30-60 30-600.08-0.23 0.09-0.300.12-0.27 0.20-0.33
hardened105037G30-600.08-0.230.12-0.27
H Hardened steel ≥ 40HRCHardened38HF G30-60 30-600.09-0.30 0.08-0.230.20-0.33 0.12-0.27

(1) For material groups see pages 495-524