Tungaloy SPMT090304-24 NS9530 Milling Insert
High-Precision Steel Milling | Premium NS9530 Cermet | High Surface Luster
Which cermet insert provides the best surface finish for steel milling?
The Tungaloy SPMT090304-24 NS9530 is a high-performance cermet insert designed specifically for milling operations in steel (ISO P). Utilizing the advanced NS9530 cermet grade, this insert offers exceptional resistance to built-up edge (BUE) and oxidation, ensuring long-lasting dimensional accuracy and a brilliant surface luster. The -24 chipbreaker geometry is optimized for stable chip control across a wide range of cutting conditions. 100% Made in Japan, it is the professional's choice for precision components requiring a high aesthetic finish.
NS9530 Cermet Grade
A titanium-based ceramic composite that offers superior chemical stability compared to carbide. It significantly reduces friction and prevents metal welding at high speeds.
-24 Milling Chipbreaker
The -24 geometry is engineered for efficient chip evacuation during milling. It balances edge sharpness with structural strength to prevent chipping during entry and exit.
High Oxidation Resistance
Maintains edge integrity at high temperatures, allowing for higher cutting speeds (Vc) without the rapid degradation seen in standard tungsten carbide.
Decoding SPMT090304-24 Technical Nomenclature
S
Square
P
11° Relief
M
Tolerance
T
Hole/Fix
09
9.525mm Size
03
3.18mm Thick
04
0.4mm Rad.
-24
Milling
3. Technical Specifications: Metric vs. Imperial
| Parameter |
Metric (ISO) |
Imperial Equivalent |
| Inscribed Circle (IC) |
9.525 mm |
3/8" (SPMT 32.51) |
| Thickness (S) |
3.18 mm |
1/8" |
| Corner Radius (RE) |
0.4 mm |
1/64" |
| Hole Diameter (d1) |
4.4 mm |
0.173" |
Recommended Cutting Parameters (NS9530)
-
Cutting Speed (Vc): 150 - 300 m/min
-
Feed per Tooth (fz): 0.08 - 0.20 mm/t
-
Depth of Cut (ap): 0.5 - 2.5 mm
*Note: Cermet thrives on speed. Higher Vc values within the range will yield better surface finishes.*
4. Product Applications
- Precision shoulder milling of carbon and alloy steels.
- Finishing milling operations where high surface luster is required.
- High-speed machining of automotive and machine tool parts.
- Mass production environments requiring stable tool life.
5. Tool Compatibility
Compatible with all standard Tungaloy Tung-Tri or Tung-Turn milling cutters specifically designed for SPMT 0903 inserts. Fits ISO standard milling bodies for high-speed CNC machining centers.
7. Why Choose CNCHome-Beyond?
Genuine Tungaloy
100% Original Japanese Import
Industrial Support
Expert Knowledge for B2B Clients
Global B2B Logistics
Fast Fulfillment & Tracking
Reliable Inventory
Consistent Source for Production
What Machinists Say About SPMT090304
⭐⭐⭐⭐⭐ "Mirror Finish Success" - Markus H., Germany
"Switched from carbide to this NS9530 cermet for finishing steel plates. The surface finish is absolute mirror quality. No more BUE!"
⭐⭐⭐⭐⭐ "Authentic Japanese Quality" - James R., USA
"Very stable insert for our high-speed mills. Holds the tolerance even after long production runs. Definitely genuine Tungaloy."
⭐⭐⭐⭐ "Great for Steel" - T. Yamamoto, Japan
"The -24 breaker works well for chip evacuation. Very sharp edge. Excellent for our precision automotive contracts."
⭐⭐⭐⭐⭐ "Fast Shipping B2B" - Lim S., Singapore
"CNCHome-Beyond is our go-to supplier for Tungaloy. The SPMT0903 inserts arrived in perfect condition and performed exactly as expected."
⭐⭐⭐⭐⭐ "No Vibrations" - Luca G., Italy
"Minimal cutting force due to the sharp cermet edge. Perfect for our thin-walled steel components."
8. FAQ - Milling Precision Support
Q: Can I use this for rough milling?
A: No. Cermet is more brittle than carbide. It is designed for high-precision finishing. For roughing, we recommend T9125 or similar carbide grades.
Q: Does it fit standard 3/8" IC milling cutters?
A: Yes. SPMT0903 is the metric designation for SPMT 32.51, which has a 9.525mm (3/8") Inscribed Circle.
Q: Should I use coolant with cermet milling?
A: Air blast is often preferred for cermet to avoid thermal shock, but light coolant can be used for extra surface shine on certain steels.
Expert Tip: The Cermet Advantage in Milling
The **NS9530 cermet** grade provides a much lower chemical affinity for steel compared to Tungsten Carbide. This means the workpiece material doesn't "weld" to the insert, preventing the jagged edges that cause dull finishes. For the best result, keep your cutting speed high and your feed consistent. Trust **Tungaloy Japan** for world-class CNC results.
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