Page 398 - Carmex - Inch Catalog 2022

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Mill-Thread Technical Section

Cutting Data

Mini Mill-Thread MTS, MTI and FMTI types

Ultra-Fine carbide grade with high hardness and toughness provides an excel-
MT6
lent solution for machining steels, stainless steels, and super alloys Ni or Ti base.
With a universal PVD multi-layer coating, provides high heat and wear resistance.
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.
MT8 Sub-Micron Grade with Aluminum Titanium Nitride (AlTiN) multi-layer coating (ISO K10-K20). Extremely
high heat resistant and smooth cutting operation, for high performance, and normal machining
conditions. General purpose for all materials.
MT11 Ultra-fine Sub-Micron grade with advanced PVD triple coating.

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 Ø.24 Ø.28 Ø.31 Ø.35 Ø.39 Ø.47 Ø.55 Ø.63
Low and Medium Carbon Steels
200-390 .0016 .0020 .0020 .0028 .0035 .0043 .0051 .0055 .0059 .0063 .0063 .0067 .0071 .0071
< 0.55%C
P High Carbon Steels ≥ 0.55%C 200-300 .0012 .0016 .0020 .0024 .0031 .0035 .0039 .0047 .0051 .0055 .0055 .0063 .0067 .0071
Alloy Steels, Treated Steels
160-260 .0012 .0016 .0016 .0020 .0020 .0024 .0028 .0028 .0031 .0035 .0039 .0047 .0051 .0055
Stainless Steels - Free Cutting 230-330 .0008 .0012 .0012 .0016 .0020 .0024 .0024 .0028 .0031 .0035 .0039 .0043 .0047 .0051
M Stainless Steels - Austenitic 200-300 .0008 .0012 .0012 .0016 .0020 .0024 .0024 .0028 .0031 .0035 .0039 .0043 .0047 .0051
Cast Steels 230-300 .0012 .0016 .0016 .0020 .0020 .0024 .0028 .0028 .0031 .0035 .0039 .0047 .0051 .0055
K Cast Iron 130-260 .0016 .0020 .0020 .0028 .0035 .0043 .0051 .0055 .0059 .0063 .0063 .0067 .0071 .0071
Aluminum ≤12%Si, Copper 330-660 .0016 .0020 .0020 .0028 .0035 .0043 .0051 .0055 .0059 .0063 .0063 .0067 .0071 .0071
Aluminum >12% Si 200-460 .0012 .0012 .0012 .0016 .0020 .0024 .0024 .0028 .0031 .0035 .0039 .0043 .0051 .0054
N
Synthetics, Duroplastics,
160-660 .0035 .0039 .0043 .0047 .0055 .0063 .0071 .0075 .0075 .0075 .0075 .0075 .0079 .0079
Thermoplastics
S Nickel Alloys and Titanium Alloys 70-130 .0012 .0012 .0012 .0016 .0016 .0020 .0024 .0024 .0024 .0028 .0028 .0028 .0031 .0031

start center arc thread arc end
point location entrance milling exit point

B12-18