Tungaloy VBMT160404-PS NS9530 Insert
Professional Cermet Super-Finishing | 35° Rhombic | Mirror Gloss Grade
What is the best insert for a mirror finish on carbon steel?
The Tungaloy VBMT160404-PS NS9530 represents the pinnacle of surface-finishing technology. Unlike traditional carbide, the NS9530 cermet grade (Ceramic-Metal composite) provides unparalleled resistance to built-up edge (BUE) and chemical wear. This results in a workpiece with a bright, "mirror-like" appearance that often eliminates the need for secondary grinding or polishing. The 16mm edge length provides significant stability for profiling larger components, while the 0.4mm radius ensures high-precision details and superior surface Ra values. Designed and manufactured by Tungaloy Japan for elite CNC operations.
Super-Finishing Cermet
Titanium-based cermet substrate offers extreme thermal stability and anti-oxidation properties, preventing material welding at the cutting edge.
-PS High-Sharpness Geometry
The "Positive Sharp" chipbreaker is specifically designed to handle fine chips at low depths of cut, ensuring a clean profile without scratching the surface.
High Speed Stability
Maintains edge integrity at high RPMs, allowing for faster cycle times while achieving tighter dimensional tolerances.
Decoding VBMT 160404-PS Nomenclature
V
35° Rhom
B
5° Relief
M
Tolerance
T
Hole/Sinter
16
16mm
04
4.76mm
04
0.4 Rad
-PS
Sharp
3. Technical Data: ISO vs. ANSI Comparison
| Feature |
Metric (ISO) |
Imperial (ANSI) |
| Standard Model |
VBMT160404-PS |
VBMT 331-PS |
| Inscribed Circle (IC) |
9.525 mm |
3/8" |
| Thickness (S) |
4.76 mm |
3/16" |
| Corner Radius (RE) |
0.4 mm |
1/64" |
Super-Finishing Parameters
-
Cutting Speed (Vc): 130 - 350 m/min (Ideally 250 m/min)
-
Feed Rate (f): 0.05 - 0.20 mm/rev
-
Depth of Cut (ap): 0.1 - 1.2 mm
4. Industrial Applications
- Final super-finishing of precision automotive shafts.
- Profiling complex contours on carbon and alloy steel parts.
- High-gloss turning for medical and aerospace hardware.
- Machining of watch components and miniature precision gears.
5. Tool Compatibility
Standard ISO VBMT 1604 pocket. Optimized for SVJCR/L external profiling holders and SVUCR/L internal boring bars. Perfect for Citizen, Mazak, Haas, and DMG Mori CNC Lathes.
6. Tungaloy Finishing Matrix
| Grade |
Composition |
Target Application |
Resulting Finish |
| NS9530 |
Cermet |
Precision Steel Finishing |
Mirror / Ultra-Gloss |
| AH725 |
PVD Carbide |
General Finishing/Stainless |
Bright Industrial |
| T9125 |
CVD Carbide |
High Speed Steel Machining |
Clean Matte |
7. Why Choose Beyond Li?
100% Genuine
Direct Factory Source
Industrial Expertise
Professional B2B Support
Global Logistics
Fast Express Shipping
Global Machinist Reviews
⭐⭐⭐⭐⭐ "Mirror Surface Perfection" - L. Schneider, Germany
"NS9530 is a miracle grade for our steel finishing. The parts come out looking like they were polished by hand. Excellent tool life at 280 m/min."
⭐⭐⭐⭐⭐ "Consistent Accuracy" - H. Sato, Japan
"The 0.4mm radius and -PS breaker make profiling very easy. Dimensions stay within 0.005mm across 500 parts."
⭐⭐⭐⭐⭐ "Best for Finish Passes" - Marcus V., USA
"Authentic Tungaloy stock from Beyond Li. Arrived in California in 4 days. These cermets outlasted my previous coated carbide inserts for gloss finishes."
⭐⭐⭐⭐⭐ "No Built-up Edge" - E. Rossi, Italy
"Usually I have issues with steel sticking to the tip, but with cermet NS9530, the edge stays clean and sharp. Highly recommended."
⭐⭐⭐⭐⭐ "Stable Profiling" - D. Miller, Australia
"Perfect for the complex contours on our automotive project. No vibration even on slender shafts."
8. FAQ - Engineering Support
Q: Can I use this cermet for stainless steel?
A: While it can work on stainless, cermet is brittle. For stainless finishing, we recommend the AH725 carbide grade for better toughness. Use NS9530 primarily for carbon and alloy steels.
Q: Should I use coolant with cermet inserts?
A: For the best surface gloss, high-speed dry machining is often preferred. However, stable coolant flow is also fine to control temperature in long runs.
Q: Why choose the 16mm insert over the 11mm size?
A: The 16mm edge length offers more stability and better heat dissipation for larger components or slightly deeper finishing cuts.
Tech Tip: Achieving Mirror Gloss
To maximize the **NS9530 cermet** performance, maintain a high cutting speed (Vc) and a light feed. Heat generated during high-speed cutting helps soften the chip, allowing the **sharp cermet edge** to glide through without micro-chipping. **Tungaloy Japan** - Excellence in Finishing.
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