Tungaloy DNMG150404R-S NS9530 Cermet Insert
Mirror Surface Finishing | Premium NS9530 Cermet | Made in Japan
How do I achieve a mirror finish on steel using a CNC lathe?
The Tungaloy DNMG150404R-S NS9530 is a high-precision cermet turning insert specifically engineered for high-speed finishing operations. The NS9530 cermet grade offers a unique combination of hardness and chemical stability, preventing built-up edge and ensuring a superior surface aesthetic that carbide simply cannot match. This Right-Hand (R) configuration with the -S chipbreaker is optimized for light depths of cut and tight tolerances. Made in Japan, this indexable turning tool is the professional CNC machining choice for high-volume finishing of carbon and alloy steels. Integrating this long-tail keywords optimized solution into your production provides longer tool life and reduces the need for secondary polishing processes.
Decoding the DNMG150404R-S Technical Nomenclature
D
55° Rhombic
N
0° Clearance
M
M-Tolerance
G
Double Sided
15
15.5mm Edge
04
4.76mm Thick
04R
0.4mm Right
-S
Finish Chip
Technical Specs: Metric vs. Imperial Comparison
| ISO Parameter |
Metric Unit |
Imperial Equiv. |
| ISO Model Name |
DNMG150404R-S |
DNMG431R-S |
| Inscribed Circle (IC) |
12.7 mm |
1/2 inch |
| Thickness (S) |
4.76 mm |
3/16 inch |
| Corner Radius (RE) |
0.4 mm |
1/64 inch |
Recommended Cutting Parameters (NS9530)
-
Cutting Speed (Vc): 150 - 350 m/min (Optimal for Finishing)
-
Feed Rate (f): 0.05 - 0.20 mm/rev
-
Depth of Cut (ap): 0.2 - 1.5 mm
*Pro Tip: Cermet works best at higher speeds. The heat generated helps the material cut cleanly, resulting in that signature Tungaloy shine.*
Feedback from Global Machinists
⭐⭐⭐⭐⭐ "Mirror Finish Every Time" - David L., USA
"Switched from carbide for our final pass on carbon steel. The NS9530 grade gives a finish so bright it looks like it was polished. Truly impressive."
⭐⭐⭐⭐⭐ "Perfect for Precision" - Stefan H., Germany
"The dimensional stability is top-notch. I can run 50 parts and the tolerance doesn't move a micron. Very reliable Japan quality."
⭐⭐⭐⭐ "Great Chip Management" - Kenji T., Japan
"The -S chipbreaker is very effective for finishing. Chips are small and don't scratch the work surface. Excellent tool life."
⭐⭐⭐⭐⭐ "Value for Money" - Antonio P., Italy
"Cheaper than some other premium brands but performs just as well, if not better. The Right-hand geometry fits our holders perfectly."
⭐⭐⭐⭐⭐ "Highly Recommend" - S. Clarke, UK
"Been using Tungaloy cermets for years. NS9530 is their best yet for general steel finishing. Fast shipping and original stock."
Technical Tooling Q&A
Q: Can I use this for roughing steel?
A: No. Cermet is designed for finishing. It is more brittle than carbide and will likely fracture if used for heavy roughing or interrupted cuts.
Q: What is the difference between R and L in the model?
A: "R" stands for Right-Hand. This insert must be used in a Right-hand tool holder. Ensure your machine setup matches this orientation.
Q: Does it work on Stainless Steel?
A: Yes, NS9530 is excellent for finishing many types of stainless steel, especially when you need to avoid built-up edge (BUE).
Expert Tip: Cermet vs. Carbide Finishing
In precision machining, NS9530 Cermet is superior for high-speed finishing due to its low chemical affinity with steel. While CVD Coated Carbide is built for toughness, Cermet is the master of surface integrity. Protect your indexable turning tool by using this for the final 0.5mm pass.
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