Tungaloy SPMT090308-PS NS9530 Milling Insert
High-Gloss Steel Finishing | Premium NS9530 Cermet | -PS Positive Geometry
How can I achieve a mirror-like finish in steel milling?
The Tungaloy SPMT090308-PS NS9530 is a premier cermet milling insert designed specifically for high-speed finishing of ISO P (Steel). By utilizing the NS9530 cermet grade, which provides exceptional chemical stability, this insert prevents built-up edge and oxidation, resulting in a superior surface luster. The -PS chipbreaker features a high-positive rake angle that reduces cutting resistance and heat, making it perfect for precision work on CNC machining centers. 100% Made in Japan, it is the industrial benchmark for mirror finishing.
NS9530 Cermet Grade
A TiCN-based cermet that offers incredible wear resistance and anti-sticking properties. It maintains a sharp edge longer than carbide during finishing.
-PS Sharp Geometry
The -PS "Positive Sharp" breaker is optimized for light milling. It creates clean chips and minimizes workpiece burrs and thermal deformation.
0.8mm Radius Security
The 0.8mm (08) corner radius provides the necessary strength to handle higher feed rates while ensuring high-precision dimensional accuracy.
Decoding SPMT090308-PS Technical Nomenclature
S
Square
P
11° Relief
M
Tolerance
T
Hole/Fix
09
9.525mm IC
03
3.18mm Thk
08
0.8mm Rad.
-PS
Sharp Cut
3. Technical Specifications: Metric vs. Imperial
| Parameter |
Metric (ISO) |
Imperial Equivalent |
| Inscribed Circle (IC) |
9.525 mm |
3/8" (SPMT 32.52) |
| Thickness (S) |
3.18 mm |
1/8" |
| Corner Radius (RE) |
0.8 mm |
1/32" |
| Material Grade |
NS9530 (Cermet) |
High Gloss Finishing |
Recommended Cutting Parameters (NS9530)
-
Cutting Speed (Vc): 150 - 350 m/min
-
Feed per Tooth (fz): 0.10 - 0.22 mm/t
-
Depth of Cut (ap): 0.3 - 2.0 mm
*Expert Note: For cermet inserts, air blast is highly recommended over liquid coolant to avoid thermal cracking and to maximize surface shine.*
4. Product Applications
- Precision finishing of carbon and alloy steel components.
- Final face milling for parts requiring mirror-like aesthetics.
- High-speed machining of automotive and hydraulic valves.
- Machining operations where dimensional stability is paramount.
5. Tool Compatibility
Compatible with all standard Tungaloy milling bodies designed for SPMT 0903 inserts. Fits ISO standard milling cutters for high-efficiency CNC production.
7. Why Choose CNCHome-Beyond?
Genuine Tungaloy
100% Original Japanese Stock
B2B Expertise
Professional Industrial Consulting
Fast Delivery
Efficient Global Logistics
Direct Sourcing
Stable Supply for Factories
Professional Machinist Feedback
⭐⭐⭐⭐⭐ "Mirror Surface" - Robert H., Germany
"The NS9530 grade is unbeatable for finishing. We used the SPMT090308-PS on a steel plate job and the finish was incredible. No polishing needed afterward."
⭐⭐⭐⭐⭐ "Very Sharp Edge" - David K., USA
"The -PS geometry cuts very smoothly. Even on our older CNC mills, there was zero vibration. Genuine Tungaloy quality."
⭐⭐⭐⭐ "Great Stability" - S. Nakamura, Japan
"Consistent performance over long batches. We've seen a reduction in tool replacement costs since moving to the NS9530 cermet."
⭐⭐⭐⭐⭐ "Excellent B2B Service" - Lim J., Singapore
"CNCHome-Beyond is our trusted source for Tungaloy. Fast shipping to Singapore and the inserts are always 100% authentic."
⭐⭐⭐⭐⭐ "Precision Choice" - Paolo R., Italy
"Perfect for fine milling. The 0.8mm radius is strong enough for the final pass but keeps the accuracy high."
8. FAQ - Milling Optimization
Q: Why choose cermet over carbide for steel milling?
A: Cermet (NS9530) has a much lower chemical affinity for steel, which practically eliminates built-up edge and produces a much shinier, more precise finish.
Q: What does the -PS chipbreaker do?
A: The -PS is a 'Positive Sharp' geometry. It minimizes cutting resistance and heat, which is vital for maintaining the high-gloss finish of the cermet grade.
Q: Is this insert compatible with standard SPMT 09 holders?
A: Yes. It follows the ISO standard SPMT0903 dimensions and will fit any tool holder designed for 3/8" IC (9.525mm) square inserts.
Expert Tip: Cermet for Mirror Results
The **NS9530 Cermet** grade thrives at high speeds. For the best results, keep your cutting speed (Vc) high and your feed (fz) consistent. Cermet is more brittle than carbide, so avoid heavy roughing or heavily interrupted cuts. Use **Tungaloy Japan** technology for components that demand perfection. Trust in original precision.
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