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    Carbide

    Excellence in precision machining and machining of hard-to-cut materials
    These material grades use WC micro-grain carbide, the hard layer of which is granulated to a micro size 1µm as the substrate. Furthermore, the substrate is coated by the PVD method with TiN, TiCN, and/or TiAlN. The end results are materials that are suitable for precision machining and machining of difficult-to-cut materials. Inserts in these grades are tougher and harder than carbide and come with precision sharp cutting edges. They even have superior toughness and sharper cutting edges than ultra micro-grain carbide grades, with excellent wear resistance and thermal crack resistance.

    Carbide grade

    General carbide structure

    General carbide structure

    Micro-grain carbide structure

    Micro-grain carbide structure

    Super micro-grain carbide structure

    Super micro-grain carbide structure

    The result of intensive reseach and development for improving carbide grades
    The NTK carbide grade series shows very stable performance under a wide range of conditions. NTK uses micro-grain carbide well balanced between wear resistance and toughness, as substrate.
    Features

    Superior cutting performance

    No burrs

    Machined with our insert with a sharp cutting edge

    Burrs

    Machined with a competitor's product with a honed cutting edge

    Relentless pursuit of better cutting performance
    NTK takes pride in its carbide grade series.
    Their outstanding cutting performance is due to the grinding of ultra sharp cutting edges. Sharper cutting edges provide for better burr control, lower tool pressure, holding tighter tolerances and reducing work hardening.
    Features

    Precise analysis on insert wear patterns

    Build-up edge

    Build-up edge

    Chipping / fracture

    Chipping / fracture

    Flank wear

    Flank wear

    Wear on rake

    Wear on rake

    Continuous research on insert tool life
    Damage to insert cutting edges varies depending on the machining process and the work material. There are various types of coatings that reduce such damage to prolong the tool life. NTK's carbide series offers a variety of coated insert grades which have been developed to improve their resistance characteristics, including wear, fracture, adhesion, oxidation and the like, by utilizing our state-of-the-art technology.

    ST4

    Best grade for 304SS

    ST4

    Cable Fitting - Material: 4140
    400 SFMCable Fitting - Material: 4140
    .001" IPR
    .195" LOC
    1 pass
    NTK : ST4 750 pcs
    Competitor's
    PVD-coated carbide
     200 pcs
    Features
    • Best grade for 304SS thanks to New ST coating
    • Excellent adhesion and wear resistance
    Best for Optimized for Excellent in
    • Stainless steels

    Conventional lathes

    Swiss-type lathes

    Adhesion resistance

    DM4

    Excellent oxidation resistance

    DM4

    Case
    Inco 718Case
    130 SFM
    .001 IPR
    .008" DOC
    WET
    NTK : DM4 110 pcs
    Competitor's
    PVD-coated carbide
    90 pcs
    Features
    • Best oxidation resistance for high temperature machining
    • Optimized for Conventional / Swiss-type lathes
    Best for Optimized for Excellent in
    • Titanium alloys
    • Stainless steels
    • Alloy steels
    • Carbon steels
    • Heat resistant alloys

    Conventional lathes

    Swiss-type lathes

    Oxidation

    Heat resistance

    DT4

    Excellent heat resistance for Swiss-type lathes

    DT4

    Pin
    440 CSSPin
    260 SFM
    .002 IPR
    .039" DOC
    WET
    NTK : DT4 1100 pcs
    Competitor's
    PVD-coated carbide
    800 pcs
    Features
    • Excellent oxidation resistance for Swiss-type lathes
    Best for Optimized for Excellent in
    • Titanium alloys
    • Stainless steels
    • Alloy steels
    • Carbon steels
    • Heat resistant alloys

    Swiss-type lathes

    Oxidation

    Heat resistance

    TM4

    Next generation standard insert grade Swiss-type lathes

    TM4

    Automobile parts
    304 SSAutomobile parts
    260 SFM
    .0008 IPR
    .047" DOC
    WET
    NTK : TM4 950 pcs
    Competitor's
    PVD-coated carbide
    500 pcs
    Features
    • Excellent dimensional stability and tool life thanks to triple titanium layers with excellent adherence to insert substrate
    Best for Optimized for Excellent in
    • Carbon steels
    • Stainless steels
    • Alloy steels

    Swiss-type lathes

    Balance

    ZM3

    The best selling grade for automatic lathes

    ZM3

    Case
    1010Case
    330 SFM
    .0047 IPR
    .012"-.015" DOC
    WET
    NTK : ZM3 6000 pcs
    Competitor's
    PVD-coated carbide
     150 pcs
    Features
    • Stabilizes machining dimensions thanks to the coating being firmly adhered to the substrate
    • A wide range of cutting tools in various sizes available for automatic lathes
    Best for Optimized for Excellent in
    • Carbon steels
    • Stainless steels
    • Alloy steels
    • Non-ferrous materials

    Swiss-type lathes

    Conventional lathes

    Adhesion resistance

    Coating Specifications
      Q-Coat TM-Coat DM-Coat DT-Coat V-Coat Z-Coat
    Thickness Thick Thin Thick Thin Thin Thick
    Wear Resistance  
    Heat Resistance      
    Adhesion Resistance        
    Edge Sharpness      
    Composition TiCN Multilayer Multilayer Multilayer TiCN TiN

    ◎1st choice   ○2nd choice

    QM3

    Superb wear resistance and fracture resistance in interrupted cutting

    QM3

    Spindle
    4135Spindle
    330 SFM
    .0012 IPR
    .008" DOC
    WET
    NTK : QM3 600 pcs
    Competitor's
    PVD-coated carbide
    300 pcs
    Features
    • Excellent toughness and wear resistance for wide speed range
    • Stable interrupted machining of steel
    Best for Optimized for Excellent in
    • Carbon steels
    • Stainless steels
    • Alloy steels
    • Heat resistant alloys

    Swiss-type lathes

    Conventional lathes

    Wear resistance

    VM1

    High precision machining of small diameter parts

    VM1

    Plug
    12L14Plug
    460 SFM
    .0006 IPR
    .004" DOC
    WET
    NTK : VM1 800-1000 pcs
    Competitor's
    PVD-coated carbide
    150 pcs
    Features
    • Especially for machining free cutting steels (SUM materials)
    • For high-precision machining with longer tool life even in the high-speed machining range
    Best for Optimized for Excellent in
    • Carbon steels
    • Stainless steels
    • Alloy steels

    Swiss-type lathes

    Edge sharpness

    AC3

    Developed for soilid carbide endmill

    AC3

    1045 (AF 8mm HEX)
    2,600 rpm1045(AF 8mm HEX)
    18.9 IPM
    .039 DOC
    WET
    NTK : AC3 70 pcs
    Competitor's
    solid endmill
    50 pcs
    Features
    • Newly developed for Carbide endmill
    • Excellent sharpness and great wear resistance

    KM1

    Good for non-ferrous materials like PEEK, Brass, Aluminum and Copper

    KM1

    Spool machining
    5056(Aluminium)Spool machining
    300-560 SFM
    .0016 IPR
    .02"-.20" DOC
    WET
    NTK : KM1 300 pcs
    Competitor's
    PVD-coated carbide
    200 pcs
    Features
    • Very sharp cutting edges with uncoated Micro-grain carbide
    • Excellent adhesion resistance because of mirror-finish
    • A wide range of cutting tools in various types available for Swiss-type lathes
    Best for Optimized for Excellent in
    • Aluminium
    • Plastic
    • Non-ferrous materials

    Swiss-type lathes

    Edge sharpness

    KM1

    CP1

    For roughing cast iron and ductile cast iron

    CP1

    HUB
    Ductile Cast IronHUB
    660 SFM
    .0047 IPR
    .004" DOC
    WET
    NTK : CP1 200 pcs
    Competitor's
    CVD coated carbide
    100 pcs
    Features
    • High wear resistance achieved by laminating thick film TiCN layer and Al2O3 layer as the coating; Great for cast iron cutting even in high-speed range
    • Excellent deposition resistance due to our original insert rake surface treatment to bring the mirror finish
    • Can also be used for machining ductile cast iron
    Best for Optimized for Excellent in
    • Ductile cast iron
    • Gray cast iron

    Conventional lathes

    Wear resistance

    CP1

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