Tungaloy SCMT09T308-PS T9115 Insert
High-Speed Steel Finishing | -PS Precision Breaker | T9115 Premium CVD Grade
What makes SCMT09T308-PS the best choice for steel finishing?
The Tungaloy SCMT09T304-PS T9115 is a high-performance square carbide turning insert specifically engineered for high-speed machining of ISO P (Steel) materials. Featuring the advanced T9115 CVD coating, this grade offers unparalleled wear resistance and stability at high temperatures. The -PS chipbreaker provides a positive rake angle designed for finishing to light-medium cutting, ensuring exceptional surface quality and efficient chip evacuation. Made in Japan, this insert is optimized for maximum productivity in CNC turning centers.
T9115 CVD Coating
Multi-layered CVD coating with high Al2O3 content provides an exceptional thermal barrier, allowing for high cutting speeds without edge deformation.
-PS High-Speed Breaker
Designed for high-speed finishing. It effectively curls chips at light depths of cut, preventing workpiece scratching and bird-nesting.
Enhanced Edge Strength
The 0.8mm corner radius provides a perfect balance between surface finish and edge durability for semi-finishing tasks.
Decoding SCMT09T308-PS Technical Nomenclature
S
Square
C
7° Relief
M
Tolerance
T
Hole/Fix
09
9.52mm Size
T3
3.97mm Thick
08
0.8mm Rad.
PS
Breaker
3. Technical Specifications: Metric vs. Imperial
| Attribute |
Metric (ISO) |
Imperial Equiv. |
| Inscribed Circle (IC) |
9.525 mm |
3/8 inch (SCMT 32.52) |
| Thickness (S) |
3.97 mm |
5/32 inch |
| Corner Radius (RE) |
0.8 mm |
1/32 inch |
| Hole Diameter (D1) |
4.4 mm |
0.173 inch |
Recommended Cutting Parameters (T9115 Steel Grade)
-
Cutting Speed (Vc): 200 - 450 m/min (Optimized for CNC Efficiency)
-
Feed Rate (f): 0.08 - 0.25 mm/rev (Breaker range)
-
Depth of Cut (Ap): 0.5 - 2.0 mm (Finishing depth)
*Pro Tip: Higher speeds with T9115 reduce built-up edge and improve surface gloss.*
4. Product Applications
- High-speed outer diameter finishing of carbon steel.
- Continuous cutting of alloy steel shafts.
- Machining automotive steel parts with Ra < 1.6 finish.
- Final finishing of large diameter steel tubes and pins.
5. Tool Compatibility
Universal fit for SSDCN, SSKCR/L, and SSGCR/L turning tool holders designed for 9.52mm square inserts (Size 09T3). Compatible with all CNC lathe spindles.
7. Why Choose CNCHome-Beyond?
Genuine Tungaloy
100% Original Japanese Parts
Industrial Authority
Trusted Supplier for Steel Machining
B2B Support
Professional Technical Consulting
Global Logistics
Express Shipping to 50+ Countries
Global Machinist Feedback
⭐⭐⭐⭐⭐ "High Speed Master" - James W., USA
"T9115 is incredible. I ran this at 420 m/min on 4140 steel and the finish was like glass. The 0.8 radius is very strong."
⭐⭐⭐⭐⭐ "Perfect Chip Control" - K. Schmidt, Germany
"The -PS breaker handles the chips perfectly on our CNC lathes. No more tangled nests during finishing passes."
⭐⭐⭐⭐ "Very Durable" - M. Sato, Japan
"Consistent results every time. Tungaloy quality is unmatched for high-volume automotive part production."
⭐⭐⭐⭐⭐ "Original Packaging" - F. Rossi, Italy
"Genuine Japanese inserts. Shipping was fast and the technical advice from the seller helped a lot."
⭐⭐⭐⭐⭐ "Top Performance" - Lim H., Singapore
"The Ra value we get with SCMT09T308 is amazing. Excellent stability across hundreds of parts."
8. FAQ - Professional Support
Q: Is T9115 better than T9215?
A: T9115 is a classic premium CVD grade with a proven track record for high-speed finish turning. T9215 is the newer generation, but T9115 remains a global favorite for its predictable wear.
Q: Can I use this for stainless steel?
A: SCMT-PS T9115 is optimized for ISO P (Steel). For stainless steel (ISO M), we recommend AH630 or T6100 series grades.
Q: Will this fit my standard SSDCN holder?
A: Yes, it is a standard ISO SCMT 09T3 size and is fully compatible with SSDCN series holders.
Machinist Tip: Why CVD T9115?
The T9115 CVD grade uses a thick Al2O3 layer that acts as a heat shield for the carbide substrate. This is why it performs best at high surface speeds (Vc). If you see edge deformation, increase your RPM—this insert is built to handle the heat of high-production steel finishing.
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