Tungaloy VBMT160404-24 NS9530 Cermet Insert
Super-Mirror Finishing | NS9530 High-Gloss Cermet | Precision Profiling
How do I achieve a mirror finish on steel parts?
The Tungaloy VBMT160404-24 NS9530 is a specialized cermet turning insert engineered for super-finishing operations. Unlike traditional carbide, the NS9530 cermet grade possesses high chemical stability and low affinity for steel, which effectively prevents built-up edge (BUE). This results in an exceptional, mirror-like surface gloss on the workpiece. The 35-degree rhombic geometry allows for intricate profiling, while the -24 chipbreaker is specifically optimized for light depths of cut and precise chip evacuation during final finishing passes. For machinists requiring high-speed stability and aesthetic surface perfection, the NS9530 is the professional standard.
NS9530 Super-Cermet
A titanium-based carbonitride grade that offers incredible wear resistance and high thermal stability, ensuring the cutting edge remains sharp for extended periods.
-24 Precision Breaker
Designed for finishing ranges, this breaker ensures stable chip evacuation at very low feed rates and shallow DOC, protecting the finished surface from scratches.
BUE Resistance
The low chemical affinity for iron-based materials prevents "welding" of the chip to the tool, which is critical for maintaining dimensional accuracy and gloss.
Decoding VBMT 160404-24 Nomenclature
V
35° Rhom
B
5° Relief
M
Tolerance
T
Hole/Sinter
16
16mm Edge
04
4.76mm Thk
04
0.4 Rad
-24
Profile Brk
3. Technical Data: ISO (Metric) vs. ANSI (Imperial)
| Standard Parameter |
ISO (Metric) |
ANSI (Imperial) |
| Standard Model |
VBMT160404-24 |
VBMT 331-24 |
| Inscribed Circle (IC) |
9.525 mm |
3/8" |
| Thickness (S) |
4.76 mm |
3/16" |
| Corner Radius (RE) |
0.4 mm |
1/64" |
Recommended Cutting Parameters (Super Finishing)
-
Cutting Speed (Vc): 100 - 300 m/min (Ideally 200 m/min)
-
Feed Rate (f): 0.03 - 0.15 mm/rev
-
Depth of Cut (ap): 0.1 - 1.0 mm
4. Primary Applications
- Super-finishing of carbon and alloy steels (S45C, SCM440).
- Final diameter finishing on aesthetic visible components.
- Boring operations requiring high surface Ra and gloss.
- Precision profiling of high-tolerance mechanical shafts.
5. Tool Compatibility
Compatible with standard ISO VBMT 1604 pockets. Optimized for use with SVJCR/L external profiling holders and SVUCR/L boring bars. Direct fit for DMG Mori, Haas, Mazak, and Okuma CNC machinery.
6. Tungaloy Finishing Grade Selection Guide
| Grade |
Material Type |
Surface Quality |
Advantage |
| NS9530 |
Cermet |
Mirror / High Gloss |
Excellent Adhesion Resistance |
| T9115 |
CVD Carbide |
Standard Finish |
High Speed Wear Resistance |
| GT9530 |
Coated Cermet |
Stable Gloss |
Better Chipping Resistance |
7. Why Source from Beyond Li?
100% Genuine
Tungaloy Japan Official Grade
B2B Technical Support
Feed & Speed Optimization
Global Logistics
Express Shipping Worldwide
Voice of Machinists
⭐⭐⭐⭐⭐ "Mirror Surface" - K. Schmidt, Germany
"The NS9530 is simply the best for finishing. I am getting Ra 0.4 easily on S45C steel. Exceptional cermet quality."
⭐⭐⭐⭐⭐ "No Adhesion" - J. Rossi, Italy
"We struggled with built-up edge using carbide. Switched to this cermet from Beyond Li and the parts look perfect. Very fast delivery."
⭐⭐⭐⭐⭐ "Great Profiling" - R. Patel, India
"The -24 chipbreaker is very effective for our light profiling cuts. Consistent tool life box after box."
⭐⭐⭐⭐⭐ "Reliable Grade" - M. Thompson, USA
"Highly stable for high-speed CNC finishing. These original Tungaloy inserts are worth every cent."
⭐⭐⭐⭐⭐ "Highly Recommended" - S. Tanaka, Japan
"Excellent cermet performance. Used for precision parts and the surface gloss is unmatched by any carbide."
8. FAQ - Expert Engineering Support
Q: Can I use NS9530 for heavy roughing?
A: No. Cermet is more brittle than carbide. It is strictly for finishing where the depth of cut is light and cutting forces are stable.
Q: Should I use coolant with cermet?
A: For NS9530, dry cutting is often preferred at high speeds to avoid thermal shock, though high-pressure coolant can be used if applied consistently.
Q: What makes cermet different from carbide?
A: Cermet uses titanium based particles instead of tungsten. This gives it a higher resistance to heat and a lower chemical affinity with steel, leading to superior gloss.
Machinist Tip: Achieving Perfection
To maximize the **mirror effect** with **NS9530**, maintain a high cutting speed (above 150 m/min) and a light feed. The **-24 breaker** is at its best when chips are thin and evacuated immediately. **Tungaloy Japan** - Leading the World in Finishing.
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