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Semi-Finish and Finishing Radial
Feed (IPT) per Cutting Diameter (inch)
Cutting Speed
ISO Material Group No. Recommendations Hardness 1/8 3/16 1/4 5/16 3/8 7/16 1/2 5/8 3/4 1 Profiling TEXT
ap
ae
Annealed
<0.25% C
1 Material Condition Vc (SFM) HB .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
125
1230
2 ≥0.25% C Annealed 1015 190 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
Non-alloy Quenched
3 steel and cast <0.55% C and 900 250 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
steel, free tempered
4 cutting steel Annealed 900 220 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
≥0.55% C Quenched
5 760 300 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
& tempered
6 Annealed 900 200 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
Quenched
P 7 Low alloy & cast steel & tempered 710 275 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
(less than 5% of Quenched
8 730 300 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
alloying elements) & tempered
Quenched
9 760 350 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
& tempered
10 High alloyed steel, cast Annealed 730 200 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
11 steel and tool steel Quenched 450 325 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
& tempered
Ferritic/
12 Stainless steel martensitic 570 200 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
13 and cast steel Martensitic 490 240 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
Stainless steel Austenitic,
M 14 425 180 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
and cast steel duplex
Ferritic /
15 780 180 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
pearlitic
Grey cast iron (GG) Pearlitic/
16 martensitic 870 260 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
K 17 Ferritic 990 160 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
18 Nodular cast iron (GGG) Pearlitic 990 250 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
19 Ferritic 990 130 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
20 Malleable cast iron Pearlitic 900 230 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
31 Annealed 145 200 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
32 Fe based Hardened 120 280 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
33 High temp. Annealed 120 250 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
alloys
34 Ni or Co Hardened 120 350 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
S 35 based Cast 120 320 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
36 Pure 260 190 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
Titanium alloys Alpha+Beta
37 alloys, 250 310 .0009 .0013 .0017 .0021 .0025 .0030 .0034 .0042 .0050 .0068 1xD .05xD
hardened
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