Tungaloy TNMG160404-TM T9115 Turning Insert
High-Speed CVD Grade | TM Medium-Cutting Chipbreaker | Premium Steel Machining
What is the best carbide insert for high-speed steel turning?
The Tungaloy TNMG160404-TM T9115 is a high-performance, double-sided triangular carbide insert optimized for the P-group (Steel) machining spectrum. Utilizing Tungaloy’s advanced T9115 CVD coating technology, this insert provides exceptional wear resistance and plastic deformation resistance during high-velocity operations. The -TM chipbreaker is a versatile medium-cutting geometry that ensures stable chip evacuation across varied depths of cut. 100% Made in Japan, it is engineered for professional CNC shops requiring high productivity and consistent tool life.
T9115 CVD Grade
Specifically designed for steel. Features a thick Al2O3 layer for superior heat protection and a hard TiCN layer for crater wear resistance at high speeds.
TM Chipbreaker Geometry
The "General Purpose" leader for medium cutting. It balances cutting edge strength with lower cutting force to prevent vibration in long-workpiece turning.
Premium Surface Luster
The specialized coating treatment reduces friction between the chip and the rake face, resulting in a superior surface finish on the final part.
Decoding TNMG 160404-TM Nomenclature
T
Tri
N
0°
M
Tol.
G
Hole
16
Size
04
Thk
04
0.4 Rad
-TM
Chip
3. Technical Data: Metric (ISO) vs. Imperial (ANSI)
| Feature |
Metric (ISO) |
Imperial (ANSI) |
| Standard Model |
TNMG160404-TM |
TNMG 331-TM |
| Inscribed Circle (IC) |
9.525 mm |
3/8" |
| Thickness (S) |
4.76 mm |
3/16" |
| Corner Radius (RE) |
0.4 mm |
1/64" |
Industrial Cutting Parameters (Steel)
-
Cutting Speed (Vc): 150 - 350 m/min (Recommended 250 m/min)
-
Feed Rate (f): 0.15 - 0.35 mm/rev
-
Depth of Cut (ap): 0.5 - 3.5 mm
*Optimization: T9115 is built for speed. Increase Vc for better surface finish on alloy steels.*
4. Primary Applications
- Carbon Steel (S45C, S50C).
- Alloy Steels (SCM440, 4140).
- Bearing Steels and Tool Steels.
- High-efficiency CNC turning production.
5. Tool Compatibility
Compatible with standard ISO/ANSI TNMG 1604 pockets. Pairs perfectly with MTJNR/L, WTJNR/L, or DTGNR/L tool holders. Fits Haas, Mazak, and Mori Seiki machines.
7. Why Source from CNCHome-Beyond?
100% Genuine
Tungaloy Japan Supply
Technical B2B Support
Machining Expertise
Fast Global Delivery
Air Logistics Available
Stock Verification
Sealed Original Boxes
Feedback from Global Workshops
⭐⭐⭐⭐⭐ "High Speed Master" - James K., USA
"T9115 is incredibly stable at high RPMs. We cut our cycle times by 15% since switching from a generic P-grade."
⭐⭐⭐⭐⭐ "Original Packaging" - Markus D., Germany
"Authentic Tungaloy Japan stock. The -TM chipbreaker works well for general carbon steel shafts. Quick shipping to Munich."
⭐⭐⭐⭐ "Great for Mass Production" - Hiroshi S., Japan
"Consistent tool life. We run these on our Nakamura lathes for 24/7 production with very few offsets needed."
⭐⭐⭐⭐⭐ "Best Price for Original" - Carlos M., Mexico
"Beyond is a reliable B2B partner. These inserts are genuine and help us stay competitive in automotive part supply."
⭐⭐⭐⭐⭐ "Reliable TM Geometry" - Alistair M., UK
"No chip wrapping issues on 4140 steel. The 0.4mm radius gives a very clean finish for final dimensioning."
8. FAQ - CNC Machine Support
Q: Can I use T9115 for machining stainless steel?
A: While it can handle light stainless cuts, T9115 is optimized for Steel (P). For stainless, we recommend the T6130 grade which is specifically designed to handle heat and work-hardening.
Q: Is the 0.4mm corner radius strong enough for heavy roughing?
A: The 0.4mm radius is better for medium-to-finishing. For heavy roughing with scale or interrupted cuts, we recommend a 0.8mm or 1.2mm radius for better edge integrity.
Q: What is the difference between TM and TS chipbreakers?
A: -TM is a general-purpose medium-cutting geometry. -TS is a finishing chipbreaker with a sharper edge designed for lighter depths of cut and lower feed rates.
Tech Tip: CVD Coating for Steel
The **T9115 CVD grade** is engineered for high-temperature stability. In high-speed turning, the Al2O3 layer prevents heat from reaching the carbide substrate, preventing deformation. Maintain high Vc for optimal results. **Tungaloy Japan** - Global Tooling Excellence.
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