Page 301 - Carmex - Inch Catalog 2018-19 Rev. B

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Mill - Thread Technical Section

Cutting Data

D-Thread type

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 Speed
ISO Materials
(ft/min)
Low and Medium Carbon Steels <0.55%C 330 - 670

P High Carbon Steels ≥0.55%C 330 - 590
Alloy Steels, Treated Steels 330 - 460

Stainless Steels - Free Cutting 280 - 410
M Stainless Steels - Austenitic 260 - 380

Cast Steels 380 - 510
K Cast Iron 250 - 480

Aluminum ≤12%Si, Copper 490 - 980
N Aluminum >12% Si 490 - 980

Synthetics, Duroplastics, Thermoplastics 330 - 1150
S Nickel Alloys, Titanium Alloys 150 - 310
Recommended Feed Rate: .003 - .006

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