NTK Cutting Tools

NTK650

For small diameter parts | New HiPIMS Coating

Outstanding Productive PVD Grade for Various Material Groups and Applications
Home / Grade / NTK650

Consistent Dimensional Accuracy and a Smooth Finish for Maximum Tool Life

Excellent surface finish and long tool life for Ni-base alloys as well as M- and P-class alloys.
Features
  • New HiPIMS coating improves surface smoothness and suppresses in-film defects, It significantly enhances anti-welding performance and provides stable processing.
  • Excellent wear resistance even when machining difficult-to-cut machine materials where the cutting edge is subject to high temperatures.
Performance
  • Excellent surface finish and long tool life for Ni-base alloys as well as M- and P-class alloys.
  • Best performance for small-diameter components (up to φ20)
New HiPIMS PVD grade
Excellent wear resistance

NTK650 doubled the wear resistance comparing with competitor

Shape: DCGT11T302, vc=50m/min, f=0.05mm/rev, ap=1.0mm, WET

NTK650 doubled the wear resistance comparing with competitor

Shape: DCGT11T302, vc=160m/min, f=0.05mm/rev, ap=1.0mm, WET

Excellent surface smoothness

Improved surface roughness near the hole and Doubling the tool life

Shape:DCGT11T301, v c=78m/min, f=0.085mm/rev, a p=1.5mm, WET

 

Grade Work material Operation type Cutting parameters
Cutting Speed (m/min) Cutting Speed (sfm) Feed (mm/rev) Feed (ipr) Depth of cut (mm) Depth of cut (inch)
NTK650 Inconel Front turning 30 – 60 100 – 200 0.03 – 0.07 .0012 – .0028 0.5 – 1.5 .019 – .059
Hastelloy Front turning 50 – 100 160 – 330 0.03 – 0.07 .0012 – .0028 0.5 – 1.5 .019 – .059
Semiconductor part
Material:
Hastelloy 22
Cutting speed:
132 m/min 430 SFM
Feed:
0.015-0.02 mm/rev .0006-.0008 IPR
Coolant:
WET
NTK650
400 pcs / corner
Conventional tool
(Carbide Coated)
 
100 pcs / corner

NTK650 suppressed the occurrence of streaks and achieved 4 times longer tool life.

Joints for Power Plant
Material:
Inconel
Cutting speed:
36 m/min 120 SFM
Feed:
0.04 mm/rev .0016 IPR
DOC:
1 mm .040”
Coolant:
WET
NTK650
420 pcs / corner
Conventional tool
(Carbide Coated)
210 pcs / corner

NTK650 achieves stable machining accuracy, reduces inspection time, and achieves twice toollife with its stable surface finish.

Pin Parts
Material:
SUS440C/440C
Cutting speed:
120 m/min 390 SFM
Feed:
0.05 mm/rev .002 IPR
DOC:
0.1 mm .004”
Coolant:
WET
NTK650
9,800 pcs / edge
Conventional tool
(PVD carbide)
5,500 pcs / edge

NTK650 achieved 1.8 times tool life.

Bolt
Material:
SCM415
Cutting speed:
142.24 m/min 470 SFM
Feed:
0.03 mm/rev .0012 IPR
DOC:
4.95 mm .195”
Coolant:
WET
NTK650
500 pcs / edge
Conventional tool (PVD carbide)
100 pcs/edge

NTK 650 grade provides a better surface finish and excellent anti-adhesion properties, reducing wear caused by built-up edge. As a result, it achieved 5 times longer tool life and stable machining.

Related News
April 24, 2025
NTK’s Front Max (TFX) transforms front turning with enhanced chip control, rigidity, and surface finish. ...
April 23, 2025
NTK Cutting Tools optimizes bone screw machining with TFX for stable turning, TW for precision ...

For more information about this product, visit our online e-catalog, or download the catalog/product report

About
Solutions & Products