Page 311 - Carmex - Inch Catalog 2018-19 Rev. B

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Mill - Thread Technical Section

MTSB type

Carbide grade - MT7:
Sub-Micron Grade with Titanium Aluminum Nitride multi-layer coating (ISO K10 - K20). This is a
general purpose grade, which can be used with all materials; it should be run at medium to high
cutting speeds.

Cutting Feed inch/tooth
ISO Materials Speed Cutting Diameter = D
Standard
ft/min Ø.04 Ø.06 Ø.08 Ø.12 Ø.16 Ø.20

Low and Medium Carbon Steels < 0.55%C 200 - 390 .0016 .0020 .0020 .0028 .0035 .0043
P High Carbon Steels ≥ 0.55%C 200 - 300 .0012 .0016 .0020 .0024 .0031 .0035

Alloy Steels, Treated Steels 160 - 260 .0012 .0016 .0016 .0020 .0020 .0024
Stainless Steel - Free Cutting 230 - 330 .0008 .0012 .0012 .0016 .0020 .0024

M Stainless Steel - Austenitic 200 - 300 .0008 .0012 .0012 .0016 .0020 .0024
Cast Steels 230 - 300 .0012 .0016 .0016 .0020 .0020 .0024
K Cast Iron 130 - 260 .0016 .0020 .0020 .0028 .0035 .0043

Aluminum ≤ 12%Si, Copper 330 - 660 .0016 .0020 .0020 .0028 .0035 .0043

N Aluminum > 12%Si 200 - 460 .0012 .0012 .0012 .0016 .0020 .0024
Synthetics, Duroplastics, Thermoplastics 160 - 660 .0035 .0039 .0043 .0047 .0055 .0063
S Nickel Alloys, Titanium Alloys. 70 - 130 .0012 .0012 .0012 .0016 .0016 .0020

H Hardened Steel, 45-50HRc 200 - 230 .0012 .0016 .0016 .0020 .0020 .0024

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