Tungaloy DCMT11T302-PS NS9530 Turning Insert
High-Gloss Finishing Master | Premium NS9530 Cermet | Made in Japan
How do I get a mirror finish on carbon steel parts?
The Tungaloy DCMT11T302-PS NS9530 is a high-performance cermet turning insert specifically engineered for precision finishing operations. Unlike traditional tungsten carbide, the NS9530 cermet grade provides exceptional chemical stability and resistance to built-up edge (BUE), which is critical for maintaining high-luster surfaces on steel. The -PS chipbreaker (Polish Style) features a sharp cutting edge and optimized geometry that ensures superior chip control even at extremely light depths of cut. This Japan-made indexable turning tool is the ideal choice for CNC machining shops looking to eliminate secondary polishing steps. By integrating this long-tail keywords optimized insert into your workflow, you guarantee consistent tool life and unmatched part quality.
Decoding the DCMT11T302-PS Technical Nomenclature
D
55° Rhombic
C
7° Clearance
M
M-Tolerance
T
Hole & Screw
11
11.6mm Edge
T3
3.97mm Thick
02
0.2mm Radius
-PS
Polish Style
Technical Specs: Metric vs. Imperial Comparison
| ISO Parameter |
Metric Unit |
Imperial Equiv. |
| ISO Model Name |
DCMT11T302-PS |
DCMT32.50.5-PS |
| Inscribed Circle (IC) |
9.525 mm |
3/8 inch |
| Thickness (S) |
3.97 mm |
5/32 inch |
| Corner Radius (RE) |
0.2 mm |
0.008 inch |
What are the advantages of cermet for precision finishing?
The NS9530 Grade is a specialized cermet designed specifically for the high-speed finishing of carbon and alloy steels. In precision machining, cermet's low affinity for steel prevents the welding of chips to the cutting edge. The -PS chipbreaker (Polish Style) utilizes a sharp, positive rake that "peels" the material cleanly, resulting in the brilliant surface luster that Tungaloy is famous for. For CNC machining operators, this indexable turning tool offers much tighter tolerance control over long production runs than standard carbide inserts, making it a staple for high-quality finishing passes.
Recommended Cutting Parameters (NS9530)
-
Cutting Speed (Vc): 120 - 320 m/min
-
Feed Rate (f): 0.03 - 0.12 mm/rev
-
Depth of Cut (ap): 0.1 - 1.2 mm
*Pro Tip: Cermet is heat-resistant but can be brittle. Avoid interrupted cuts and ensure high cutting speeds to maximize surface brightness.*
Feedback from Global Machinists
⭐⭐⭐⭐⭐ "Mirror Finish Specialist" - James D., USA
"We turn small precision pins and the NS9530 gives us a mirror finish that standard carbide just can't touch. Very satisfied."
⭐⭐⭐⭐⭐ "Extreme Precision" - F. Schneider, Germany
"Tungaloy's cermet grade is top-tier. The 0.2 radius is very sharp and the dimensions stay consistent all day. Great tool life."
⭐⭐⭐⭐ "Great Chip Control" - Hiroshi T., Japan
"The -PS geometry is perfect for our light finishing passes. Even at 0.1mm depth, the chips break properly. Excellent for CNC Lathes."
⭐⭐⭐⭐⭐ "High Gloss Surface" - Luca M., Italy
"Used this on alloy steel and the surface Ra was impressive. Much better than the competitors for finishing."
⭐⭐⭐⭐⭐ "Original Quality" - Sarah L., UK
"Authentic Tungaloy inserts. They work exactly like the catalog says. Fast delivery and reliable performance."
Technical Tooling Q&A
Q: Can I use this for finishing stainless steel?
A: NS9530 is a steel specialist. While it can do light work on stainless, it is not recommended for sticky materials like 304/316 where PVD carbide is better.
Q: Does cermet require coolant?
A: Cermet can be used dry due to high heat resistance. For a mirror finish, light coolant helps with chip evacuation, but avoid thermal shock (on/off flow).
Q: What tool holder fits this DCMT 11T3?
A: This fits standard ISO holders like the SDJCR/L 1212 or 1616, and internal boring bars like S...-SDUCR/L.
Expert Tip: Cermet vs. Carbide for Ra Finishing
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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