Tungaloy TCMT16T304-PS NS9530 Turning Insert
High-Precision Mirror Finishing | Advanced NS9530 Cermet | 0.4mm Corner Radius
How do I achieve a mirror-like surface finish on steel parts?
The Tungaloy TCMT16T304-PS NS9530 is a specialized triangular indexable insert designed for the high-precision finishing of ISO P (Steel) materials. Utilizing the NS9530 Cermet grade, this insert offers exceptional chemical stability and resistance to oxidation, providing a glossy surface luster that standard carbide cannot match. The -PS (Power Sharp) chipbreaker is optimized for light depths of cut, ensuring superior chip control and preventing surface damage from stringy chips. 100% Made in Japan, it is the industrial benchmark for CNC shops requiring strict dimensional accuracy and aesthetic excellence.
NS9530 Cermet Grade
A titanium-based cermet that provides incredible resistance to built-up edge (BUE). It maintains a sharp edge at high speeds, resulting in much cleaner Ra surface values than traditional coated carbide.
-PS High-Finish Breaker
The PS geometry features a highly positive rake angle. This reduces cutting pressure and vibrations, which is crucial when machining long shafts or boring deep internal diameters.
0.4mm Precision Radius
The 0.4mm radius (04) offers the perfect balance between edge strength and surface smoothness, allowing for precise corner details while maintaining tool durability.
Decoding TCMT16T304-PS Technical Nomenclature
T
Triangular
C
7° Relief
M
Tolerance
T
Hole/Fix
16
16.5mm L
T3
3.97mm Thk
04
0.4mm Rad.
-PS
Chipbreaker
3. Technical Specifications: Metric vs. Imperial
| Feature |
Metric (ISO) |
Imperial Reference |
| ISO Designation |
TCMT16T304-PS |
TCMT 32.51-PS |
| Inscribed Circle (IC) |
9.525 mm |
3/8" |
| Thickness (S) |
3.97 mm |
5/32" |
| Corner Radius (RE) |
0.4 mm |
1/64" |
Recommended Cutting Parameters (NS9530)
-
Cutting Speed (Vc): 120 - 280 m/min (Run fast for optimum finish)
-
Feed Rate (f): 0.05 - 0.20 mm/rev
-
Depth of Cut (ap): 0.2 - 1.5 mm
*Machinist Advice: Cermet is sensitive to thermal shock. For long life and high gloss, cutting dry or using high-pressure air-blow is recommended over intermittent coolant.*
4. Primary Applications
- High-speed finishing of low-to-medium carbon steels.
- Final dimensioning of precision pins and shafts.
- Boring high-precision internal holes in alloy steel.
- Replacing grinding processes for cost-effective finishing.
5. Equipment Compatibility
Universal fit for Tungaloy / ISO boring bars and holders designed for TCMT 16T3 size inserts (3/8" IC). Fits standard S-STFCR/L and STUCR/L shanks.
7. Why Source from CNCHome-Beyond?
100% Original
Tungaloy Japan Stock
Expert B2B Support
Technical Director Advice
Industrial Stock
Ready for bulk delivery
Global Supply
Reliable logistics worldwide
Machinist Feedback from the Field
⭐⭐⭐⭐⭐ "Super Surface Ra" - Klaus H., Germany
"Switched from carbide to this cermet for my finishing pass on steel pins. The shine is incredible—almost ground."
⭐⭐⭐⭐⭐ "Reliable Boring" - James D., USA
"Running these in an S20S boring bar. Very consistent chip breaking and zero vibration. Tungaloy Japan quality."
⭐⭐⭐⭐ "Great Life at High Vc" - Lin W., Singapore
"Speed is key. Run it fast and the finish stays bright. Excellent service from the CNCHome team."
⭐⭐⭐⭐⭐ "Original Packaging" - Marc L., France
"Genuine product received. The NS9530 is much better for my finishing work than PVD coated grades."
⭐⭐⭐⭐⭐ "Perfect for Alloy Steel" - Arjun R., India
"Dimension stability is perfect. Even after 50 parts, the diameter hasn't changed by a micron."
8. FAQ - Precision Machining Support
Q: Is NS9530 better than coated carbide for steel?
A: For high-speed finishing and surface gloss, yes. Cermet has higher chemical stability, which prevents the steel from "welding" to the tip.
Q: Can I use this for interrupted cuts?
A: Cermet is more brittle than carbide. It is perfect for continuous finishing but should be used with caution on heavy interruptions.
Q: Does this fit my S-STFCR16 holder?
A: Yes, TCMT 16T3 (32.5) is the standard size for all STFCR/L 16 style turning and boring tools.
Industrial Tech Tip: Why Cermet?
For the highest surface luster and long edge life in high-speed steel finishing, choose **NS9530 Cermet**. It prevents built-up edge and oxidation, keeping your parts bright and within tolerance. For precision results, **Tungaloy Japan** is the professional choice.
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