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M42 Cobalt Screw Machine

America´s Finest High–Speed Cutting Tools™

PRODUCT CATALOG >> HSS M42 Cobalt Screw Machine Length

Type 260-D M42 Cobalt 135° Split point – Screw Machine
    M42 Cobalt Screw Machine Type 260-D
    Manufactured from M42 High speed steel contains 8% cobalt increasing hot hardness.

    High hot hardness of cobalt permits speeds 30% over regular high speed steel drills.

    135° split point for fast penetration and accurate starting without center punch.
    Type 260-D M42 Cobalt 135° Split point – Screw Machine  DOWNLOAD: PDF

 

Type 260-DN TiN Coated M42 Cobalt 135° Split point – Screw Machine
    TiN Coated M42 Cobalt Screw Machine Type 260-DN
    Manufactured from M42 high speed steel contains 8% cobalt increasing hot hardness.

    135° split point for fast penetration and accurate starting without center punch.

    Titanium nitride coating for lubricity, abrasion resistance extended tool life.
    Type 260-DN TiN Coated, M42 Cobalt 135° Split point – Screw Machine DOWNLOAD: PDF

 

Type 260-AND Titanium Aluminum Nitride M42 Cobalt Screw Machine 135° Split Point
    Titanium Aluminum Nitride M42 Cobalt Type 260-AND
    Titanium aluminum nitride designed for use where extreme temperatures are found, allows for increased machining speeds up to 200%.

    Titanium Aluminum Nitride Can be used in machining stainless steel, nickel based and titanium alloys, not recommended for aluminum.

    High hot hardness of cobalt permits speeds 30% over regular high-speed steel drills.
    Type 260-AND Titanium Aluminum Nitride M42 Cobalt Screw Machine 135° Split Point DOWNLOAD: PDF

 

 


M42 exhibits excellent wear resistance by virtue of high heat-treated hardness (68 to 70 HRC), and the high cobalt content imparts the hot hardness.

As such, the cutting edges on tools made from M42 super high speed steel stay sharp and hard in heavy-duty and high-production cutting applications. M42 is also "less prone" to chipping when used for interrupted cuts and costs less when compared to the same tool made of carbide.

Reminder, that the cutting edge chipping is never acceptable and all efforts should be made to minimize or eliminate.

To increase the life of high-speed steel, tools are sometimes coated; one such coating is TiN -Titanium Nitride.

Most coatings generally increase a tool's hardness and or lubricity. While adding a layer of protection from heat do to friction between the material being drilled and the cutting edge.

A coating allows the cutting edge of a tool to cleanly pass through the material also assist to decrease the temperature associated with the cutting process and increase the life of the tool.

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