Tungaloy SNMG120408-TM T9115 Turning Insert
High-Speed Steel Machining | Premium T9115 CVD Grade | Versatile -TM Chipbreaker
How can I improve tool life in high-speed steel turning?
The Tungaloy SNMG120408-TM T9115 is a high-performance double-sided carbide insert specifically engineered for ISO P (Steel) applications. Featuring the industry-leading T9115 CVD coated grade, this insert excels in high-velocity continuous cutting and light interrupted cutting conditions. The -TM chipbreaker is Tungaloy's standard "Medium" geometry, providing exceptional chip control across a wide range of feed rates and depths of cut. 100% Made in Japan, it delivers the thermal stability and edge toughness required for modern CNC productivity.
T9115 CVD Coating
Utilizes a thick Al2O3 layer for superior heat resistance. This allows for increased cutting speeds (Vc) without accelerated crater wear, maintaining precision over long runs.
-TM Standard Geometry
The "Standard" medium chipbreaker is highly versatile. It balances cutting resistance with chip breaking efficiency, preventing "nesting" in various steel alloys.
PremiumTec Surface
Tungaloy’s specialized post-treatment smooths the coating surface, drastically reducing friction and preventing metal welding (built-up edge) on the tool.
Decoding SNMG120408-TM Technical Nomenclature
S
Square
N
0° Relief
M
Tolerance
G
Hole/Fix
12
12.7mm Size
04
4.76mm Thick
08
0.8mm Rad.
-TM
Med. Breaker
3. Technical Specifications: Metric vs. Imperial
| Parameter |
Metric (ISO) |
Imperial Equivalent |
| Inscribed Circle (IC) |
12.7 mm |
1/2" (SNMG 432) |
| Thickness (S) |
4.76 mm |
3/16" |
| Corner Radius (RE) |
0.8 mm |
1/32" |
| Grade Substrate |
T9115 (CVD) |
Steel Machining Expert |
Recommended Cutting Parameters (T9115 Grade)
-
Cutting Speed (Vc): 150 - 350 m/min (Standard Steel)
-
Feed Rate (f): 0.15 - 0.50 mm/rev
-
Depth of Cut (ap): 1.0 - 5.0 mm
*Note: T9115 is optimized for high velocities. For the best chip breaking with the -TM geometry, ensure the feed rate is above 0.20 mm/rev.*
4. Product Applications
- External turning of carbon steel, alloy steel, and structural steel.
- High-efficiency medium cutting of automotive and industrial parts.
- Suitable for high-speed continuous to light interrupted machining.
- B2B heavy industry manufacturing where tool life is a priority.
5. Tool Compatibility
Compatible with all Standard ISO Turning Holders (MCLNR, PSSNR, PSKNR series). Fits standard SNMG 1204 pockets. Ideal for top-clamp or lever-lock systems.
7. Why Choose CNCHome-Beyond?
Genuine Tungaloy
100% Original Japan Import
Industrial Support
Professional CNC Expertise
Fast Shipping
Secure Global B2B Logistics
Large Inventory
Ready for Bulk Factory Orders
What Global Machinists Are Saying
⭐⭐⭐⭐⭐ "Workhorse of the Shop" - Mark T., USA
"We use the SNMG120408-TM T9115 for nearly all our medium steel turning. It's incredibly consistent and the T9115 coating holds up even when we push the speed."
⭐⭐⭐⭐⭐ "Outstanding Tool Life" - D. Fischer, Germany
"Original Tungaloy quality. We've seen a 25% increase in tool life compared to our previous CVD grade. Highly recommend for high-speed machining."
⭐⭐⭐⭐ "Great Chip Control" - K. Sato, Japan
"The -TM breaker works beautifully across different depths. Stable, predictable, and reliable. Made in Japan excellence."
⭐⭐⭐⭐⭐ "Perfect B2B Partner" - L. Tan, Singapore
"CNCHome-Beyond provided fast shipping and genuine parts. The technical data provided made it easy to set up our machines."
⭐⭐⭐⭐⭐ "Reliable for Alloy Steel" - A. Rossi, Italy
"No issues with built-up edge even after hours of continuous cutting. The surface finish remains excellent for a medium breaker."
8. FAQ - Professional Support
Q: Is T9115 suitable for Stainless Steel?
A: T9115 is optimized for ISO P (Steel). For Stainless Steel (ISO M), we recommend Tungaloy's T6120 or T6130 grades for better results.
Q: Does this fit SNMG 432 holders?
A: Yes. SNMG 120408 is the metric equivalent of the Imperial SNMG 432 size. They are fully compatible with standard 1/2" IC holders.
Q: What is the benefit of the 0.8mm radius (08)?
A: The 0.8mm radius provides better edge strength and higher feed rate potential than the 0.4mm, making it ideal for standard medium turning.
Industrial Tip: When to choose T9115 vs T9215
The **T9115 grade** is a proven standard for high-speed steel turning. If your application involves high heat and high-velocity continuous cutting, the thermal barrier of T9115 is your best friend. For even higher toughness in interrupted cuts, consider the newer T9215 series. Trust **Tungaloy Japan** for world-leading steel machining productivity.
© Technical Data by cnchome-beyond.com - CNC Tool Authority
