Stainless Steel Machining
• High hardness and excellent oxidation resistance
• Outstanding tool life in efficient machining of difficult‑to‑cut stainless steels
• Improved coating adhesion and enhanced surface smoothness
• Suppresses built‑up edge (BUE), a common issue when machining stainless steel, enabling stable cutting
Expansion of lineup for all applications
Select optimum chipbreaker according to machining conditions
*Please refer to the catalog for details.
| Application | Series |
|---|---|
| Front turning | TMV chipbreaker AMX chipbreaker AM3 chipbreaker（with Wiper） |
| Back turning | BACK DUO series |
| Parting | CUT DUO series |
| Threading | TTP series |
[ Cutting conditions ]
Workpiece Material :
SUS304 ⌀11 vc=80m/min f=0.03mm /rev
304SS ⌀11 Speed=260 SFM feed=.0012”
after 200 pcs.
NTK’s new PVD coating technology improved the bonding force and smoothness on ST4.
It eliminates BUE issues and improves insert performance.
| ISO | Work material | Chipbreaker | Grade | vc (m/min) (SFM) | ap (mm) (inch) | f (mm/rev) (IPR) |
|---|---|---|---|---|---|---|
 |
Difficult-to-cut Free-cutting stainless steel |
AMX | ST4 | 40 – 180 130 – 600 | 0.05 – 0.3 .002 – .012 | 0.03 – 0.1 .001 – .004 |
| TMV | 0.5 – 2.0 .020 – .080 | 0.05 – 0.2 .002 – .008 | ||||
| YL | 0.3 – 2.5 .012 – .100 | 0.02 – 0.15 .001 – .006 |
| Medical component | |
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| ST4 | C/T About 1.5 min / pce |
| Conventional tool (PVD carbide) | C/T About 5.0 min / pce |
The TFX series insert in ST4 achieved approximately 3.7‑times shorter cycle time than a competitor’s insert.
| Pipe | |
|---|---|
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| ST4 | 2,000 pcs / corner |
| Conventional tool (PVD carbide) | 1000 pcs / corner |
ST4 achieved twice the tool life of a competitor’s insert.
| Machine component | |
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| ST4 | 6,000 pcs / corner |
| Conventional tool (PVD carbide) | 3,500 pcs / corner |
ST4 achieved 1.7 times the tool life of a competitor’s insert.
| Equipment component | |
|---|---|
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| ST4 | 4000 pcs / corner |
| Conventional tool (PVD carbide) | 2000 pcs / corner |
ST4 achieved twice the tool life of a competitor’s insert.
For more information about this product, visit our online e-catalog, or download the catalog/product report
