Page 396 - Carmex - Inch Catalog 2022

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Mill-Thread Technical Section

Cutting Data

FMT - Fast MT type

MT8 Sub Micron grade with advanced PVD triple coating (ISO K10-K20).
Extremely high heat resistant and smooth cutting operation, for high performance and normal
machining conditions. General purpose for all materials.

Feed inch/tooth
Cutting
ISO Cutting Diameter = D
Standard Materials Speed
ft/min Ø.17 Ø.24 Ø.31 Ø.39 Ø.47
Low and Medium Carbon Steels < 0.55%C 330 - 820 .0012 .0024 .0028 .0031 .0035
P High Carbon Steels ≥ 0.55%C 360 - 590 .0012 .0020 .0024 .0028 .0031
Alloy Steels, Treated Steels 300 - 520 .0008 .0012 .0016 .0020 .0020

Stainless Steel - Free Cutting 200 - 520 .0012 .0016 .0020 .0024 .0024
M Stainless Steel - Austenitic 200 - 390 .0004 .0012 .0016 .0020 .0020
Cast Steels 430 - 560 .0008 .0012 .0016 .0020 .0020
K Cast Iron 230 - 490 .0016 .0024 .0028 .0031 .0035
Aluminum ≤ 12%Si, Copper 490 - 1150 .0016 .0024 .0028 .0031 .0035
N Aluminum > 12%Si 330 - 820 .0012 .0012 .0016 .0020 .0020
Synthetics, Duroplastics, Thermoplastics 330 - 1310 .0024 .0031 .0039 .0043 .0047
S Nickel Alloys, Titanium Alloys. 70 - 260 .0008 .0012 .0012 .0012 .0012

H Hardened Steel, 45-50HRc 195 - 230 .0008 .0012 .0012 .0012 .0012

B12-16