Tungaloy SNMG120404-TM T9115 Turning Insert
High-Speed Steel Machining | Premium T9115 CVD Grade | Versatile -TM Chipbreaker
What is the best insert for high-speed steel turning and medium cutting?
The Tungaloy SNMG120404-TM T9115 is a premium double-sided square carbide insert engineered specifically for ISO P (Steel) applications. Featuring the legendary T9115 CVD coated grade, this tool is designed to excel in high-speed continuous to lightly interrupted cutting conditions. The -TM chipbreaker is Tungaloy's "Standard" medium-range geometry, offering a wide range of chip control across varying depths of cut. 100% Made in Japan, it provides the heat resistance and edge toughness required for modern high-productivity CNC machining.
T9115 High-Speed Grade
The T9115 grade features a thick Al2O3 layer which provides exceptional heat resistance, allowing for significantly higher cutting speeds without compromising tool life.
TM Versatile Chipbreaker
The -TM geometry is the industry standard for medium cutting. It balances cutting force and chip breaking efficiency, making it suitable for a wide array of steel alloys.
PremiumTec Post-Treatment
Tungaloy’s specialized coating surface treatment reduces friction and prevents built-up edge, resulting in better surface finishes and more predictable wear patterns.
Decoding SNMG120404-TM Technical Nomenclature
S
Square
N
0° Relief
M
Tolerance
G
Hole/Fix
12
12.7mm Size
04
4.76mm Thick
04
0.4mm Rad.
-TM
Med. Breaker
3. Technical Specifications: Metric vs. Imperial
| Parameter |
Metric (ISO) |
Imperial Equivalent |
| Inscribed Circle (IC) |
12.7 mm |
1/2" (SNMG 431) |
| Thickness (S) |
4.76 mm |
3/16" |
| Corner Radius (RE) |
0.4 mm |
1/64" |
| Insert Grade |
T9115 (Premium CVD) |
High Speed Machining |
Recommended Cutting Parameters (T9115 Grade)
-
Cutting Speed (Vc): 200 - 350 m/min (Standard Steel)
-
Feed Rate (f): 0.15 - 0.40 mm/rev
-
Depth of Cut (ap): 1.0 - 4.0 mm
*Note: T9115 is optimized for high velocity. Increase Vc for smoother finishes and reduced edge build-up.*
4. Product Applications
- External and internal turning of carbon and alloy steels.
- High-efficiency medium machining on automotive components.
- B2B heavy manufacturing requiring stable tool life.
- Continuous high-speed cutting where thermal stability is vital.
5. Tool Compatibility
Universal fit for standard ISO Turning Holders such as the MCLNR, PSSNR, or PSKNR series. Designed for SNMG 1204 pockets with top-clamp or lever-lock systems.
7. Why Choose CNCHome-Beyond?
Genuine Tungaloy
Direct Japan Imports
Industrial Expertise
Professional Support
Fast Shipping
Global B2B Delivery
Large Inventory
Bulk Stock for Factories
Global Customer Experience
⭐⭐⭐⭐⭐ "Great for High-Volume Jobs" - James W., USA
"We run these SNMG inserts on our automated lines. T9115 is incredibly consistent, which is exactly what we need for long production runs on 1045 steel."
⭐⭐⭐⭐⭐ "Original Tungaloy Quality" - D. Schmidt, Germany
"Excellent heat resistance. We increased our cutting speed by 20% compared to our previous brand and the tool life actually stayed the same."
⭐⭐⭐⭐ "Reliable TM Breaker" - H. Tanaka, Japan
"The TM chipbreaker is very versatile. It handles varying depths of cut without any chip control issues. Very stable."
⭐⭐⭐⭐⭐ "Professional Service" - R. Lim, Singapore
"Genuine parts and very helpful technical advice. The SNMG120404-TM is our go-to for all medium turning operations."
⭐⭐⭐⭐⭐ "Top Surface Finish" - G. Moretti, Italy
"Even at high speeds, the surface finish remains very clean. No built-up edge issues whatsoever on our alloy steel parts."
8. FAQ - Support Tips
Q: Is T9115 suitable for stainless steel?
A: T9115 is optimized for ISO P (Steel). For ISO M (Stainless), we recommend Tungaloy's T6120 or T6130 grades for better performance.
Q: What is the difference between -TM and -TS chipbreakers?
A: -TM is for general medium cutting, while -TS is a sharp-edge finisher designed for smaller depths of cut and lower feed rates.
Q: Does this insert fit SNMG 431 holders?
A: Yes, SNMG 120404 is the metric equivalent to the Imperial SNMG 431 specification and fits all corresponding tool holders.
Expert Machinist Tip: The T9115 Advantage
The **T9115 grade** is a specialized CVD coated carbide that thrives on speed. If you are experiencing "crater wear" on your current inserts, switching to T9115 can help. Its thick Al2O3 coating acts as a thermal barrier, protecting the insert even during the intense heat of high-speed machining. Trust **Tungaloy Japan** for world-class steel turning efficiency.
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