Carmex Metric Catalog 2015-16 Rev.B

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Mill - Thread Technical Section

Cutting Data
CMT Spiral Multi Flute Inserts
Carbide grade - 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.
                                                                                      Feed mm/tooth
   ISO                                                          Cutting Speed       Cutting Diameter = D
                                Material
 Standard                                                           m/min
                                                                                         16-35
            Low and Medium Carbon Steels <0.55%C                   60-120                0.14-0.24

    P       High Carbon Steels 0.55%C                             60- 90                0.12-0.24
            Alloy Steels,Treated Steels                            50- 80                0.08-0.20
            Stainless Steel-Free Cutting                           70-100                0.08-0.19

    M       Stainless Steel-Austenitic                             60- 90                0.08-0.19
            Cast Steels                                            70- 90                0.08-0.20

    K       Cast Iron                                              40- 80                0.14-0.24
            Aluminum 12%Si, Copper                               100-200                0.14-0.26

    N       Aluminum >12%Si                                        60-140                0.08-0.22
            Synthetics, Duroplastics, Thermoplastics               50-200                0.17-0.28

    S       Nickel Alloys, Titanium Alloys.                        20- 40                0.05-0.14
            Hardened Steel, 45-50HRc                               60- 70                0.07-0.17
    H
            Hardened Steel, 51-55HRc                               50- 60                0.06-0.16




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