Page 74 - HOLE MAKING CATALOG p001-148

USER GUIDE
INDEXABLE DRILLS
ISOMaterial Groups
Hardness HB
Material No.(1)
D=4-4.9
D=5-5.9
D=6-7.9
D=8-9.9
D=10-11.9
D=12-13.9
D=14-15.9
D=16-19.9
D=20-25.9
D=26-32.9
Recommended Machining Conditions

SUMOCHAM
Feed vs. Drill Diameter

Material Condition Tensile V m/min mm/rev
Strength
[N/mm2]

< 0.25 %C Annealed 420 125 1 80-110-140

Non-alloy ≥ 0.25 %C Annealed 650 190 2 80-105-130
steel and cast < 0.55 %C 850
steel, free Quenched and 750 250 3 80-100-120 0.04 0.07 0.09 0.12 0.15 0.18 0.20 0.25 0.25 0.30
cutting steel ≥ 0.55 %C tempered 1000 0.06 0.09 0.11 0.17 0.21 0.24 0.27 0.35 0.35 0.40

Annealed 220 4 70-90-110 0.08 0.11 0.13 0.22 0.28 0.30 0.35 0.45 0.45 0.50

Quenched and 300 5 50-70-90
tempered

Low alloy and cast Annealed 600 200 6 80-100-120 0.04 0.07 0.09 0.12 0.14 0.16 0.18 0.23 0.25 0.30
steel (less than 5% of 930
P Quenched and 1000 275 7 70-90-110 0.06 0.10 0.12 0.18 0.21 0.24 0.26 0.31 0.35 0.40
tempered 1200 300 8 50-70-90 0.08 0.13 0.15 0.25 0.28 0.32 0.35 0.40 0.45 0.50
alloying elements)
350 9 40-55-70

High alloyed steel, cast Annealed 680 200 10 50-70-90 0.06 0.07 0.09 0.12 0.12 0.15 0.18 0.20 0.22 0.25
steel and tool steel 1100
Quenched and 325 11 40-60-80 0.07 0.09 0.11 0.16 0.17 0.20 0.23 0.25 0.27 0.30
tempered 0.08 0.10 0.12 0.20 0.22 0.25 0.28 0.30 0.33 0.35

Stainless steel Ferritic/martensitic 680 200 12 40-55-70 0.05 0.06 0.08 0.10 0.12 0.14 0.16 0.16 0.18 0.20
and cast steel 0.06 0.07 0.09 0.12 0.15 0.17 0.20 0.21 0.24 0.27
Martensitic 820 240 13 40-55-70 0.07 0.08 0.10 0.15 0.18 0.20 0.24 0.26 0.30 0.35

M Stainless steel 0.05 0.06 0.08 0.10 0.12 0.14 0.16 0.16 0.18 0.20
and cast steel Austenitic, duplex 600 180 14 30-50-70 0.06 0.07 0.09 0.12 0.15 0.17 0.20 0.21 0.24 0.27

0.07 0.08 0.10 0.15 0.18 0.20 0.24 0.26 0.30 0.35

Gray cast iron (GG) Ferritic / pearlitic 180 15 90-125-160
K Nodular cast iron (GGG) Pearlitic / martensitic
260 16 80-110-140 0.04 0.10 0.12 0.15 0.20 0.25 0.30 0.35 0.35 0.40
Malleable cast iron Ferritic
Pearlitic 160 17 90-135-180 0.06 0.13 0.15 0.22 0.27 0.32 0.37 0.45 0.47 0.50
Ferritic 250 18 80-110-140 0.08 0.15 0.18 0.30 0.35 0.40 0.45 0.55 0.60 0.60
Pearlitic
130 19 90-125-160

230 20 80-110-140

Aluminum-wrought alloys Not hardenable 60 21
Hardenable
≤12% Si 100 22 90-155-220
Not hardenable 75 23
Aluminum- >12% Si Hardenable 0.20 0.25 0.30 0.35 0.40 0.45 0.50
cast alloys >1% Pb 90 24
High temperature 0.27 0.32 0.37 0.42 0.50 0.57 0.67
N Free cutting 130 25 80-120-160 0.35 0.40 0.45 0.50 0.60 0.70 0.75

110 26

Copper alloys Brass 90 27 90-155-220

Electrolytic copper 100 28

Non metallic Duroplastics, 29
fiber plastics 30

Hard rubber

Fe based Annealed 200 31 30-45-60
Hardened
High Ni or Co Annealed 280 32 0.05 0.06 0.08 0.10 0.12 0.12 0.14 0.16
temperature based Hardened
alloys 250 33 20-35-50 0.06 0.08 0.10 0.12 0.15 0.16 0.18 0.20
S Cast 350 34 0.07 0.11 0.13 0.15 0.18 0.20 0.22 0.25

320 35

Titanium alloys Pure 400 36 0.05 0.06 0.08 0.10 0.12 0.14 0.16 0.18
H Hardened steel Alpha+beta alloys, 1050 20-35-50 0.06 0.09 0.11 0.14 0.16 0.18 0.20 0.22
0.07 0.12 0.15 0.18 0.20 0.22 0.25 0.27
hardened 37
Hardened 0.05 0.06 0.08 0.10 0.12 0.14 0.16 0.18
55 HRC 38 0.06 0.09 0.11 0.14 0.16 0.18 0.20 0.22
Hardened 20-35-50 0.07 0.12 0.15 0.18 0.20 0.22 0.25 0.27

60 HRC 39

Recommended cutting data
(1) For workpiece materials list, see pages 495-524 . As a starting value, the middle of the recommended machining range should be used.

Then, according to the wear results, conditions can be changed to optimize performance.
The data refers to IC908

• When using external coolant supply only, reduce cutting speed by 10%
• Use internal coolant supply when machining austenitic stainless steel
• When using more than 5XD drill ratio, reduce cutting parameters by 10%

72 ISCAR