Tungaloy SPMT090308-24 NS9530 Milling Insert
Precision Steel Milling | Premium NS9530 Cermet | 0.8mm Corner Radius
What is the best insert for a high-gloss finish in steel milling?
The Tungaloy SPMT090308-24 NS9530 is a premier cermet milling insert engineered for high-speed finishing of ISO P (Steel). By leveraging the NS9530 cermet grade, this insert provides exceptional chemical stability and resistance to oxidation, resulting in a mirror-like surface finish and superior dimensional accuracy. The 0.8mm corner radius offers enhanced edge strength and higher feed capabilities compared to smaller radii, making it ideal for stable, high-efficiency finishing. 100% Made in Japan, it is designed for CNC professionals who refuse to compromise on surface quality.
NS9530 Cermet Technology
A TiCN-based cermet grade that prevents Built-Up Edge (BUE). It maintains a sharp cutting edge much longer than standard carbide when machining steel at high speeds.
-24 Milling Geometry
Optimized for light-to-medium milling, the -24 chipbreaker ensures smooth chip flow and reduced cutting forces, protecting the workpiece from thermal deformation.
0.8mm Radius Strength
The 0.8mm (08) radius provides a more robust cutting point, allowing for increased feed rates and improved resistance to edge chipping during complex milling paths.
Decoding SPMT090308-24 Technical Nomenclature
S
Square
P
11° Relief
M
Tolerance
T
Hole/Fix
09
9.525mm Size
03
3.18mm Thick
08
0.8mm Rad.
-24
Milling
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) |
Precision Steel Finishing |
Recommended Cutting Parameters (NS9530)
-
Cutting Speed (Vc): 150 - 320 m/min
-
Feed per Tooth (fz): 0.10 - 0.25 mm/t
-
Depth of Cut (ap): 0.5 - 2.5 mm
*Pro Tip: For a mirror finish, use high-speed parameters and ensure dry air blow or minimal mist coolant to avoid thermal shock.*
4. Product Applications
- Precision shoulder and face milling of carbon and alloy steels.
- Final surface finishing where high aesthetic luster is required.
- High-speed CNC machining of automotive and hydraulic components.
- Mass production requiring extremely stable dimensional control.
5. Tool Compatibility
Compatible with all standard Tungaloy milling bodies designed for SPMT 0903 inserts. Fits ISO standard milling cutters for high-precision CNC machining centers.
7. Why Choose CNCHome-Beyond?
Genuine Tungaloy
100% Original Japanese Stock
Industrial Support
B2B Expert Technical Guidance
Fast Global Delivery
Secure Logistics for Factories
Stable Supply
Reliable Source for Production
Global Professional Feedback
⭐⭐⭐⭐⭐ "Mirror Finish Success" - Hans W., Germany
"We use the SPMT090308-24 for the final pass on steel mold plates. The surface finish is absolute mirror quality. Cermet is much better than carbide here."
⭐⭐⭐⭐⭐ "Great for Production" - James D., USA
"Excellent size control. We run these on our high-speed mills and they hold tolerance for hours. Genuine Tungaloy quality."
⭐⭐⭐⭐ "Very Stable" - T. Sato, Japan
"The 0.8mm radius is very strong. We get much better tool life at higher feeds compared to the 0.4mm version. Sharp and reliable."
⭐⭐⭐⭐⭐ "Reliable B2B Supplier" - Lee W., Singapore
"Ordered in bulk from CNCHome-Beyond. Fast shipping and 100% authentic. The NS9530 is our standard for precision steel milling."
⭐⭐⭐⭐⭐ "No Vibrations" - Antonio R., Italy
"Reduced cutting forces significantly. The -24 breaker is very efficient at high speeds. Great value for Italian machining shops."
8. FAQ - Milling Support
Q: Can I use this for roughing?
A: No. Cermet is designed for precision finishing. For heavy roughing, we recommend T9125 carbide inserts.
Q: Does this fit standard 3/8" IC milling cutters?
A: Yes. SPMT090308 is the metric equivalent to SPMT 32.52, featuring a 9.525mm (3/8") Inscribed Circle.
Q: Why choose 0.8mm radius over 0.4mm?
A: The 0.8mm radius is stronger and allows for higher feed rates while maintaining a smooth surface finish, especially in stable setups.
Expert Tip: The Cermet Advantage
The **NS9530 Cermet** grade provides a much lower chemical affinity for steel than Tungsten Carbide. This means the workpiece material doesn't "stick" to the edge, preventing the dullness and jagged finishes caused by built-up edge. For the best "shine," keep your RPMs high and your feed consistent. Trust **Tungaloy Japan** for professional CNC results.
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