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Mill - Thread Technical Section
Mini Mill-Thread MTS and MTI types
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 mm/tooth
ISO Cutting Diameter = D
Materials Speed
Standard
m/min 1 1.5 2 3 4 5 6 7 8 9 10 12 14 16
Low and Medium Carbon Steels
60-120 0.04 0.05 0.05 0.07 0.09 0.11 0.13 0.14 0.15 0.16 0.16 0.17 0.18 0.18
< 0.55%C
P High CarbonSteels 0.55%C 60- 90 0.03 0.04 0.05 0.06 0.08 0.09 0.10 0.12 0.13 0.14 0.14 0.16 0.17 0.18
Alloy Steels, Treated Steels
50- 80 0.03 0.04 0.04 0.05 0.05 0.06 0.07 0.07 0.08 0.09 0.10 0.12 0.13 0.14
Stainless Steels - Free Cutting 70-100 0.02 0.03 0.03 0.04 0.05 0.06 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13
M Stainless Steels - Austenitic 60- 90 0.02 0.03 0.03 0.04 0.05 0.06 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13
Cast Steels 70- 90 0.03 0.04 0.04 0.05 0.05 0.06 0.07 0.07 0.08 0.09 0.10 0.12 0.13 0.14
K Cast Iron 40- 80 0.04 0.05 0.05 0.07 0.09 0.11 0.13 0.14 0.15 0.16 0.16 0.17 0.18 0.18
Aluminum 12%Si, Copper 100-200 0.04 0.05 0.05 0.07 0.09 0.11 0.13 0.14 0.15 0.16 0.16 0.17 0.18 0.18
Aluminum >12% Si 60-140 0.03 0.03 0.03 0.04 0.05 0.06 0.06 0.07 0.08 0.09 0.10 0.11 0.13 0.14
N
Synthetics, Duroplastics,
50-200 0.09 0.10 0.11 0.12 0.14 0.16 0.18 0.19 0.19 0.19 0.19 0.19 0.20 0.20
Thermoplastics
S Nickel Alloys and Titanium Alloys 20- 40 0.03 0.03 0.03 0.04 0.04 0.05 0.06 0.06 0.06 0.07 0.07 0.07 0.08 0.08
start center arc thread arc end
point location entrance milling exit point
Mini Mill-Thread
vs. Taps
Features Mini Mill-Thread Taps
Thread surface quality High Medium
Thread geometry Very accurate Medium
Thread tolerances 4H, 5H, 6H with std cutter 6H with standard tap, 4H with specific tap
Machining time Same as tap or shorter Short
Tool breakage Almost not possible Could happen often
Machining load Very low High
Range of thread diameters Wide range of diameters Specific tap for each diameter
Right/Left hand threading Same cutter Specific tap for each
Geometric shape Full profile Partial profile
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