Page 105 - HOLE_MAKING_CATALOG_INCH_2022_P1-P186

USER GUIDE

MD-DR-DH Cutting Parameters
Tensile Feed Vs. Drill Diameter
1.299<ØD<1.575 (inch)
Material
ISO Material Condition Strength Hardness HB Group No. Vc [SFM] f [ipr]
[ksi]
<0.25% C Annealed 61 125 1
≥0.25% C Annealed 94 190 2 330-495 .0039-.0098 INDEXABLE DRILLS
Non-alloy steel <0.55% C Quenched and 123 250 3
and cast steel, tempered
free cutting steel Annealed 109 220 4
≥0.55% C Quenched and 145 300 5 265-495 .0059-.0117
tempered
P
Annealed 87 200 6
Low alloy and cast steel (less 135 275 7
than 5% of alloying elements) Quenched and 145 300 8 230-400 .0059-.0117
tempered
174 350 9
Annealed 99 200 10 265-495 .0039-.0098
High alloyed steel, cast
steel and tool steel Quenched and 160 325 11 230-400 .0039-.0098
tempered
Ferritic / pearlitic 180 15
Gray cast iron (GG) Pearlitic / 260 16 600-990 .007-.0136
martensitic
K Ferritic 160 17
Nodular cast iron (GGG) .0059-.0117
Pearlitic 250 18 495-825
Ferritic 130 19
Malleable cast iron .0059-.0136
Pearlitic 230 20

MD-DFN Cutting Parameters
Feed Vs. Drill
Diameter
Tensile 1.299<ØD<1.575 (inch)
Material
ISO Material Condition Strength Hardness HB Group No. Vc [SFM] f [ipr]
[ksi]
<0.25% C Annealed 61 125 1 265-330-400
≥0.25% C Annealed 94 190 2 230-300-365
Non-alloy steel <0.55% C Quenched and 123 250 3 165-230-300 .0117
and cast steel, tempered .0156
free cutting steel Annealed 109 220 4 265-330-400 .0195
≥0.55% C Quenched and 145 300 5 230-300-363
tempered
P
Annealed 87 200 6 165-230-300
Low alloy and cast steel (less 135 275 7 130-180-230 .0117
.0156
than 5% of alloying elements) Quenched and 145 300 8 165-230-300
tempered .0195
174 350 9 130-200-265
Annealed 99 200 10 165-230-300 .0098
High alloyed steel, cast
steel and tool steel Quenched and 160 325 11 130-200-265 .0117
tempered .0136
Ferritic / pearlitic 180 15 300-410-530
Gray cast iron (GG) Pearlitic /
martensitic 260 16 265-365-465 .0156
K Ferritic 160 17 300-450-600 .0195
Nodular cast iron (GGG)
Pearlitic 250 18 265-365-465 .0234
Ferritic 130 19 300-410-530
Malleable cast iron
Pearlitic 230 20 265-365-465

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