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USER GUIDE

Machining Data for Indexable Insert Threading Tools
Material
Tensile Strength Hardness Group Indexable Cutting
ISO Material Condition [ksi] HB No. Speed (SFM) IC908
<0.25% C Annealed 61 125 1 330 - 655
Non-alloy steel ≥0.25% C Annealed 94 190 2 310 - 625
and cast steel, <0.55% C Quenched and tempered 123 250 3 295 - 590
free cutting steel Annealed 109 220 4 295 - 560 THREAD MILLING TOOLS
≥0.55% C
Quenched and tempered 145 300 5 260 - 490
Annealed 87 200 6 395 - 560
P Low alloy and cast steel 135 275 7 375 - 525
(less than 5% of alloying elements) Quenched and tempered 145 300 8 345 - 490
174 350 9 295 - 460
High alloyed steel, cast Annealed 99 200 10 295 - 560
steel and tool steel Quenched and tempered 160 325 11 245 - 475
Ferritic/martensitic 99 200 12 360 - 560
Stainless steel and cast steel
Martensitic 119 240 13 330 - 525
M Stainless steel and cast steel Austenitic, duplex 87 180 14 295 - 475
Ferritic / pearlitic 160 17 215 - 445
Gray cast iron (GG)
Pearlitic / martensitic 250 18 215 - 360
Ferritic 180 15 215 - 445
K Nodular cast iron (GGG)
Pearlitic 260 16 195 - 330
Ferritic 130 19 215 - 445
Malleable cast iron
Pearlitic 230 20 195 - 395
Not hardenable 60 21 360 - 855
Aluminum-wrought alloys
Hardenable 100 22 360 - 655
Not hardenable 75 23 475 - 1150
Aluminum- ≤12% Si
cast alloys Hardenable 90 24 475 - 900
N >12% Si High temperature 130 25 310 - 740
>1% Pb Free cutting 110 26 475 - 1150
Copper alloys Brass 90 27 475 - 1150
Electrolytic copper 100 28 475 - 1150
Duroplastics, fiber plastics 29 295 - 1215
Non metallic
Hard rubber 30 260 - 1085
Annealed 200 31 65 - 195
Fe based
High temperature Hardened 280 32 65 - 165
250
33
65 - 100
Annealed
alloys Ni or Co
S Hardened 350 34 35 - 65
based
Cast 320 35 50 - 80
Pure 58 190 36 100 - 295
Titanium alloys
Alpha+Beta alloys, hardened 152 310 37 65 - 230
Hardened 55 HRC 38 80 - 195
Hardened steel
H Hardened 60 HRC 39 65 - 130
Chilled cast iron Cast 400 40 80 - 195
Cast iron Hardened 55 HRC 41 65 - 165
Calculating RPM:
Example: V= 410 SFM, D=1.5 inch
n
n = Vc x 12 = 410 x 12 = 1045 RPM

πxD 3.14x1.5

Vc D

Feed: 0.002-0.006 inch/tooth

475