CPT

®

Mill-Thread Technical Section

Spiral Mill-Thread Inserts Speed and Feed Selection 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. MT7

Cutting Speed m/min MT7

ISO

Materials

Low and Medium Carbon Steels

145 - 360 165 - 255 135 - 230 165 - 245 190 - 245 100 - 220 230 - 440 145 - 590 30 - 115

P

High Carbon Steels

Alloy Steels, Treated Steels

Stainless Steels

M K N S

Cast Steels

Cast Iron

Non-Ferrous & Aluminum

Synthetics, Duroplastics, Thermoplastics

Nickel Alloys, Titanium Alloys

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. Recommended FEED RATE: 0.05 - 0.15 mm

Spiral Finish Speed Selection

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. MT7

Cutting Speed (m/min) MT7

ISO

Materials

Low and Medium Carbon Steels

200 - 330 170 - 235 100 - 195 180 - 230 180 - 230 200 - 350 500 - 1100 400 - 1500 30 - 55

P

High Carbon Steels

Alloy Steels, Treated Steels

Stainless Steels

M K N S

Cast Steels

Cast Iron

Non-Ferrous and Aluminum

Synthetics, Duroplastics, Thermoplastics

Nickel Alloys, Titanium Alloys

B12-7

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