Tungaloy DCMT070208-PS NS9530 Turning Insert
High-Stability Finishing Master | Premium NS9530 Cermet | Made in Japan
How do I achieve a stable mirror finish on carbon steel?
The Tungaloy DCMT070208-PS NS9530 is a world-class cermet turning insert designed for high-precision finishing where edge strength and surface luster are equally important. The NS9530 cermet grade provides exceptional chemical stability, effectively preventing the built-up edge (BUE) that often degrades surface quality in steel. With a 0.8mm corner radius, this insert offers increased edge strength and a wider feed range compared to smaller radii. The -PS chipbreaker (Polish Style) is engineered to provide excellent chip control at light to medium finishing depths. This Japan-made indexable turning tool is the perfect CNC machining choice for those requiring high-gloss finishes and extended tool life. By utilizing this long-tail keywords optimized insert, you ensure maximum productivity and professional results in every pass.
Decoding the DCMT070208-PS Technical Nomenclature
D
55° Rhombic
C
7° Clearance
M
M-Tolerance
T
Hole & Screw
07
7.8mm Edge
02
2.38mm Thick
08
0.8mm Radius
-PS
Polish Style
Technical Specs: Metric vs. Imperial Comparison
| ISO Parameter |
Metric Unit |
Imperial Equiv. |
| ISO Model |
DCMT070208-PS |
DCMT21.52-PS |
| Inscribed Circle (IC) |
6.35 mm |
1/4 inch |
| Thickness (S) |
2.38 mm |
3/32 inch |
| Corner Radius (RE) |
0.8 mm |
1/32 inch |
What are the advantages of cermet for precision finishing?
The NS9530 Grade is a specialized cermet designed specifically for the finishing of carbon and alloy steels. In precision machining, the chemical inertness of cermet prevents "smearing" and built-up edge, ensuring the DCMT070208-PS creates a superior surface Ra value compared to tungsten carbide. The -PS chipbreaker is Tungaloy's "Polish Style" geometry, featuring a sharp rake that peels away material cleanly even at light depths of cut. For CNC machining operators, the 0.8mm radius provides the stability needed for slightly higher feed rates while maintaining an excellent shine. This indexable turning tool is the ultimate solution for high-productivity steel finishing.
Recommended Cutting Parameters (NS9530)
-
Cutting Speed (Vc): 150 - 350 m/min
-
Feed Rate (f): 0.08 - 0.25 mm/rev
-
Depth of Cut (ap): 0.2 - 1.5 mm
*Pro Tip: Cermet thrives at high cutting speeds. If your lathe has the RPM capacity, push the Vc into the higher range for a better surface finish.*
Feedback from Global Machinists
⭐⭐⭐⭐⭐ "Mirror Surface Success" - David L., USA
"The Ra finish on 4140 steel is incredible. The 0.8mm radius gives great stability and the shine is better than any carbide tool I've used."
⭐⭐⭐⭐⭐ "Extreme Speed" - K. Schmidt, Germany
"Ran these at 300m/min and the parts came out looking polished. Tungaloy Japan quality is always reliable."
⭐⭐⭐⭐ "Great for Light Finishing" - Sato H., Japan
"The -PS breaker manages chips perfectly even at light depths. Very stable tool for CNC production."
⭐⭐⭐⭐⭐ "Consistent Tool Life" - Marco G., Italy
"Cermet stays sharp much longer than coated carbide for finishing passes. No more stopping to adjust for wear every few parts."
⭐⭐⭐⭐⭐ "Genuine Quality" - Sarah J., UK
"Original Tungaloy inserts. They work exactly as described in the technical manual. Fast shipping and excellent results."
Technical Tooling Q&A
Q: Can I use this for finishing stainless steel?
A: NS9530 is a steel specialist. While it can handle very light finishing on some stainless, we recommend a PVD carbide grade for sticky materials like 304 or 316.
Q: Does cermet require coolant?
A: Cermet can be used dry due to high heat resistance. However, for a superior finish, light coolant helps with chip evacuation. Avoid heavy thermal shock.
Q: What tool holder fits this DCMT 0702?
A: This fits standard ISO holders like the SDJCR/L 1212H07 or boring bars like S12M-SDUCR07.
Expert Choice: Cermet vs. Coated Carbide for Ra Finish
In precision machining, Cermet (NS9530) provides much higher resistance to chemical wear than Tungsten Carbide. This results in the brilliant "high-gloss" finish that your customers expect, while maintaining tighter tolerances for longer periods.
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