Precision and Power in Every Cut

KCU25B upgrades Kennametal’s existing KCU25 with a newly engineered KENGold™ PVD, multilayer coating that makes machining from one material to another easy while also achieving consistency in cutting. The nano-composite coating has an enhanced coating adhesion that delivers better flank and chipping resistance. Upgrade your multi-material projects and beat deadlines when working on steels, stainless steels, cast iron, high-temp alloys and non-ferrous materials.

KCU25B is available for a variety of insert styles and applications.

  • A2: Cut-off
  • A4:  Grooving, Turning & Cut-off
  • K-Lock: R-style
  • Fix-Perfect: C-style, D-style, E-style
  • Beyond Evolution: Grooving, Turning & Cut-off
  • Kenloc: C-style, D-style, S-style, T-style, V-style, W-style
  • Top Notch: D-style, V-style, K-style
  • Screw-on: C-style, D-style, R-style, S-style, T-style, V-style, W-style

A Closer Look at KENGold PVD Coating Technology

This multilayer coating technology is comprised of three layers, each with unique protection properties:

  • The TiSiN top layer is gold for easy wear identification.
  • The AITiSiN second layer is a super-hard nanostructured interlayer for superior wear resistance.
  • The AITiN third layer is a low-stress base layer for excellent flaking resistance.
  • Multilayer coating applied to cemented carbide delivering greater thermal deformation resistance and exceptional edge wear resistance.



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    • P Steel (36)
      • P0
        Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(36)
      • P1
        Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(36)
      • P2
        Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(36)
      • P3
        Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(36)
      • P4
        Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(36)
      • P5
        Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(30)
      • P6
        High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(30)
    • M Stainless Steel (35)
      • M1
        Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(35)
      • M2
        High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(35)
      • M3
        Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(15)
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      • K1
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      • K2
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      • K3
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      • S2
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      • S3
        Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS(15)
      • S4
        Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS(15)
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