Tungaloy CCMT09T308-PS NS9530 Turning Insert
High Edge Strength | Mirror Surface Finish | Premium Japanese Cermet Grade
What makes the NS9530 cermet grade so effective for steel finishing?
The Tungaloy CCMT09T308-PS NS9530 is a high-performance uncoated cermet turning insert engineered for precision finishing where surface quality and dimensional stability are paramount. The NS9530 grade is an advanced cermet (ceramic-metal composite) that provides high resistance to oxidation and built-up edge (BUE), a common issue when machining carbon and alloy steels at high speeds. This indexable turning tool features the PS-style chipbreaker, a ground geometry designed for light to semi-finishing passes. With a robust 0.8mm corner radius, it offers significantly higher edge strength and stability compared to smaller radii, making it the perfect choice for high-speed CNC machining. Made in Japan, it ensures a consistent and long tool life for modern precision machining workflows.
Decoding the CCMT09T308-PS Model Nomenclature
C
80° Rhombic
C
7° Clearance
M
M Tolerance
T
Hole Type
09
9.7mm Edge
T3
3.97mm Thick
08
0.8mm Radius
PS
Finishing
Technical Specifications: Metric vs. Imperial
| Feature |
Metric (Standard) |
Imperial Equiv. |
| Product Model |
CCMT09T308-PS |
CCMT32.52-PS |
| Inscribed Circle (IC) |
9.525 mm |
3/8 inch |
| Corner Radius (RE) |
0.8 mm |
1/32 inch |
How does the PS chipbreaker handle chip control at higher feeds?
The PS Chipbreaker is a ground geometry designed to reduce cutting forces and improve chip evacuation during finishing. While many indexable turning tools struggle with chip nesting on light cuts, the PS breaker's sharp rake ensures that chips are curled and broken efficiently. This long-tail keywords industry standard is highly effective for precision machining. When paired with the 0.8mm radius, the CCMT09T308 version allows for slightly higher feed rates than 0.4mm versions, while the NS9530 cermet grade provides the thermal stability needed to maintain a polished surface throughout a long tool life in CNC machining.
What are the recommended feeds and speeds for NS9530?
Recommended for P (Steel) and K (Cast Iron) finishing:
-
Cutting Speed (Vc): 100 - 320 m/min
-
Feed Rate (f): 0.08 - 0.20 mm/rev
-
Depth of Cut (ap): 0.3 - 2.0 mm
*Pro Tip: Cermet performs best at higher cutting speeds. Ensure your CNC machine is rigid to prevent vibration.*
Feedback from Global CNC Machinists
⭐⭐⭐⭐⭐ "Mirror finish on mild steel" - Robert T., UK
"The surface finish with NS9530 is incredible. I used the 0.8mm radius to get a bit more strength and it still produced a beautiful mirror finish. Very happy."
⭐⭐⭐⭐⭐ "Perfect for high production" - Hiroshi K., Japan
"Very stable tool life. We run these on our Nakamura lathes for finishing 1045 steel. No built-up edge and very consistent dimensions."
⭐⭐⭐⭐ "Great for semi-finishing too" - Sarah J., USA
"The 0.8 radius gives enough edge strength to handle semi-finishing. The PS breaker keeps the chips small and away from the workpiece."
⭐⭐⭐⭐⭐ "Excellent thermal resistance" - Matteo V., Italy
"I run these dry on finishing passes to avoid thermal shock. The NS9530 grade handles the heat perfectly. Best cermet in the shop."
⭐⭐⭐⭐⭐ "Authentic Quality" - Hans W., Germany
"Original Tungaloy stock. Fast shipping. These inserts perform exactly as the catalog describes for steel turning."
Technical Q&A
Q: Can I use NS9530 for interrupted cuts?
A: Cermet is generally more brittle than carbide. While NS9530 has better toughness than standard cermets, it is best used for continuous finishing. For heavy interruptions, consider a PVD carbide grade.
Q: Which tool holders are compatible with CCMT09T3?
A: This insert fits any standard **SCLCR09** or **SCLCR3/8** turning holder or boring bar.
Q: Is this insert suitable for stainless steel?
A: Cermet is optimized for steel and cast iron. For stainless steel, we recommend Tungaloy AH725 for better chemical stability.
Machinist Tip: Cermet vs. Carbide
When precision machining demands high surface quality, Cermet (NS9530) is the winner. It maintains edge sharpness where carbide would begin to wear, ensuring longer tool life and consistent dimensions for high-speed finishing.
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