Page 119 - MILLING CATALOG p319-550

USER GUIDE
ISO

THREAD MILLING TOOLS
Machining Data for Indexable Insert Threading Tools

Material Condition Tensile Strength Hardness Material Indexable Cutting
< 0.25 %C Annealed [N/mm2] HB No. Speed for IC908
Annealed 420 125 1
Non-alloy steel ≥ 0.25 %C Quenched and tempered 650 190 2 m/min
and cast steel, < 0.55 %C Annealed 850 250 3 100-200
free cutting steel ≥ 0.55 %C Quenched and tempered 750 220 4 95-190
Annealed 1000 300 5 90-180
P Low alloy and cast steel (less 600 200 6 90-170
than 5% of alloying elements) Quenched and tempered 930 275 7 80-150
1000 300 8 120-170
High alloyed steel, cast Annealed 1200 350 9 115-160
680 200 10 105-150
steel and tool steel Quenched and tempered 1100 325 11 90-140
680 200 12 90-170
Stainless steel and cast steel Ferritic/martensitic 820 240 13 75-145
Martensitic 600 180 14 110-170
160 17 100-160
M Stainless steel Austenitic, duplex 400 250 18 90-145
1050 180 15 65-135
Grey cast iron (GG) Ferritic/pearlitic 260 16 65-110
Pearlitic /martensitic 130 19 65-135
230 20 60-100
K Cast iron nodular (GGG) Ferritic 60 21 65-135
Pearlitic 100 22 60-120
75 23 110-260
Malleable cast iron Ferritic 90 24 110-200
Pearlitic 130 25 145-350
110 26 145-275
Aluminum- wrought alloy Not hardenable 90 27 95-225
Hardenable 100 28 145-350
29 145-350
Aluminum- =<12% Si Not hardenable 200 30 145-350
cast, alloyed Hardenable 280 31 90-370
>12% Si 250 32 80-330
N >1% Pb High temperature 350 33
Free cutting 320 34 20-60
35 20-50
Copper alloys Brass 55 HRC 36 20-30
60 HRC 37 10-20
Electrolytic copper 38 15-25
400 39 30-90
Non-metallic Duroplastics, fiber plastics 55 HRC 40 20-70
Hard rubber 41 25-60
20-40
High temperature Fe based Annealed 25-60
S alloys Ni or Co based Hardened 20-50
Annealed
Hardened

Cast

Titanium alloys Alpha+beta alloys, hardened
Hardened
Hardened steel Hardened
H Chilled cast iron Cast
Hardened
Cast iron

Calculating RPM: n
Metric Example: V=120 m/min, D=30 mm

n= Vc x 1000 = 120 x 1000 = 1274 RPM
πxD 3.14x30

Inch Example: V= 410 SFM, D=1.5 inch Vc D

n = Vc x 12 = 410 x 12 = 1045 RPM
πxD 3.14x1.5

Feed: 0.05-0.15 mm/tooth
0.002-0.006 inch/tooth

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