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Mill - Thread Technical Section
Mill-Thread Inserts Speed and Feed
Selection
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 m/min
ISO Materials
MT7
Low and Medium Carbon Steels 115 - 280
P High CarbonSteels 130 - 200
Alloy Steels, Treated Steels 105 - 180
Stainless Steels 130 - 190
M
Cast Steels 150 - 190
K Cast Iron 80 - 70
Non-Ferrous & Aluminum 180 - 340
N
Synthetics, Duroplastics, Thermoplastics 115 - 460
S Nickel Alloys, Titanium Alloys 25 - 90
Recommended FEED RATE: 0.05 - 0.15 mm
Spiral Mill-Thread Inserts Speed and Feed
Selection
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 m/min
ISO Materials
MT7
Low and Medium Carbon Steels 145 - 360
P High CarbonSteels 165 - 255
Alloy Steels, Treated Steels 135 - 230
Stainless Steels 165 - 245
M
Cast Steels 190 - 245
K Cast Iron 100 - 220
Non-Ferrous & Aluminum 230 - 440
N
Synthetics, Duroplastics, Thermoplastics 145 - 590
S Nickel Alloys, Titanium Alloys 30 - 115
Recommended FEED RATE: 0.05 - 0.15 mm
As you may note, cutting speed is shown in range terms. In most standard cases choosing a speed
in the middle of the range would be a good choice for a start.
For hard metals reduce cutting speed.
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