Page 437 - ISCAR(MILLINGCATALOG 38_2021)

USER GUIDE

Machining Data for Indexable Insert Threading Tools

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

n = Vc x 1000 120 x 1000 = 1274 RPM
=

πxD

3.14x30
Vc D
Inch Example: V= 410 SFM, D=1.5 inch
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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