Page 90 - HOLE_MAKING_CATALOG_INCH_2022_P1-P186

USER GUIDE
INDEXABLE DRILLS Material Groups Condition Strength Hardness HB Material Group No. (1) Vc SFM Recommended Machining Conditions D= 1.024-1.295

SUMOCHAM
Feed vs. Drill Diameter

D= .787-1.020
D= .157-.193
D= .315-.390
D= .236-.311
D= .197-.232
D= .394-.469
D= .472-.547
D= .551-.625
D= .630-.783
Tensile
ISO
[ksi]
Material
IPR
61
Annealed
≥0.25% C
2 260-340-430
94
Annealed
190
Non-alloy
3 260-330-390
steel and cast <0.55% C
250
.0023 .0035 .0043 .007 .008 .009 .011 .014 .014 .016
tempered
steel, free <0.25% C Quenched and 123 125 1 260-360-460 .0015 .0027 .0035 .005 .006 .007 .008 .010 .010 .012
cutting steel Annealed 109 220 4 230-300-360 .0031 .0042 .0051 .009 .011 .012 .014 .018 .018 .020
≥0.55% C Quenched and
tempered 145 300 5 160-230-300
Annealed 87 200 6 230-310-390
P Low alloy and cast 135 275 7 230-300-360 .0015 .0027 .0035 .005 .006 .006 .007 .009 .010 .012
steel (less than 5% of Quenched and .0023 .0039 .0047 .007 .008 .009 .010 .012 .014 .016
alloying elements) tempered 145 300 8 160-230-300 .0031 .0050 .0059 .010 .011 .013 .014 .016 .018 .020
174 350 9 130-180-230
Annealed 99 200 10 160-230-300 .0023 .0027 .0035 .005 .005 .006 .007 .008 .009 .010
High alloyed steel, cast .0027 .0035 .0041 .006 .007 .008 .009 .010 .011 .012
steel and tool steel Quenched and 160 325 11 130-200-260
tempered .0031 .0039 .0047 .008 .009 .010 .011 .012 .013 .014
Ferritic/martensitic 99 200 12 130-180-230 .0019 .0023 .0031 .004 .005 .006 .006 .006 .007 .008
Stainless steel .0023 .0027 .0035 .005 .006 .007 .008 .008 .009 .011
and cast steel Martensitic 119 240 13 130-180-230
.0027 .0031 .0039 .006 .007 .008 .009 .010 .012 .014
.0019 .0023 .0031 .004 .005 .006 .006 .006 .007 .008
M Stainless steel Austenitic, duplex 87 180 14 100-160-230 .0023 .0027 .0035 .005 .006 .007 .008 .008 .009 .011
and cast steel
.0027 .0031 .0039 .006 .007 .008 .009 .010 .012 .014
Ferritic / pearlitic 180 15 300-410-520
Gray cast iron (GG)
Pearlitic / martensitic 260 16 260-360-460
Ferritic 160 17 300-440-590 .0015 .0040 .0047 .006 .008 .010 .012 .014 .014 .016
K Nodular cast iron (GGG) .0023 .0051 .0059 .009 .011 .013 .015 .018 .015 .020
Pearlitic 250 18 260-360-460 .0031 .0058 .0071 .012 .014 .016 .018 .022 .024 .024
Ferritic 130 19 300-410-520
Malleable cast iron
Pearlitic 230 20 260-360-460
Not hardenable 60 21
Aluminum-wrought alloys
Hardenable 100 22
Not hardenable 75 23 300-510-720
Aluminum- ≤12% Si .008 .010 .012 .014 .016 .018 .020
cast alloys Hardenable 90 24 .011 .013 .015 .017 .020 .022 .026
>12% Si High temperature 130 25 260-390-520
N >1% Pb Free cutting 110 26 .014 .016 .018 .020 .024 .028 .030
Copper alloys Brass 90 27 300-510-720
Electrolytic copper 100 28
Duroplastics, 29
Non metallic fiber plastics
Hard rubber 30
Annealed 200 31 100-150-200
Fe based
High Hardened 280 32 .0020 .002 .003 .004 .005 .005 .006 .006
temperature Annealed 250 33 .0022 .003 .004 .005 .006 .006 .007 .008
alloys Ni or Co 70-110-160 .0024 .004 .005 .006 .007 .008 .009 .010
S based Hardened 350 34
Cast 320 35
Pure 58 190 36 .0020 .002 .003 .004 .005 .006 .006 .007
Titanium alloys Alpha+Beta alloys, 70-110-160 .0024 .004 .004 .006 .006 .007 .008 .009
hardened 152 310 37 .0028 .005 .006 .007 .008 .009 .010 .011
Hardened 55 HRC 38 .0020 .002 .003 .004 .005 .006 .006 .007
H Hardened steel 70-110-160 .0024 .004 .004 .006 .006 .007 .008 .009
Hardened 60 HRC 39
.0028 .005 .006 .007 .008 .009 .010 .011
Recommended cutting data
(1) For workpiece materials list, see pages 573-604 . 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%
88 ISCAR