Tungaloy DNMG150404-TM T9115 Turning Insert
High-Speed Steel Machining | Premium T9115 CVD Grade | Made in Japan
Which insert is best for high-speed continuous steel turning?
The Tungaloy DNMG150404-TM T9115 is a high-performance CVD coated carbide turning insert specifically engineered for medium-to-high speed steel machining. Utilizing the advanced T9115 grade, this insert features a specialized multi-layer coating with a thick Al2O3 layer, providing an incredible thermal barrier and extreme resistance to crater wear. The -TM chipbreaker (Semi-Finishing) is designed to provide stable chip control across a wide range of cutting depths. This Japan-made indexable turning tool is the professional CNC machining choice for those seeking maximum tool life and productivity in carbon and alloy steels. Incorporating this long-tail keywords optimized insert into your production cycle ensures superior dimensional accuracy and high-speed efficiency.
Decoding the DNMG150404-TM Technical Nomenclature
D
55° Rhombic
N
0° Clearance
M
M-Tolerance
G
Double Sided
15
15.5mm Edge
04
4.76mm Thick
04
0.4mm Radius
-TM
Semi-Finish
Technical Specs: Metric vs. Imperial Comparison
| ISO Parameter |
Metric Unit |
Imperial Designation |
| ISO Model Name |
DNMG150404-TM |
DNMG431-TM |
| Inscribed Circle (IC) |
12.7 mm |
1/2 inch |
| Corner Radius (RE) |
0.4 mm |
1/64 inch |
Recommended Cutting Parameters (T9115)
-
Cutting Speed (Vc): 150 - 350 m/min (Carbon/Alloy Steel)
-
Feed Rate (f): 0.10 - 0.40 mm/rev
-
Depth of Cut (ap): 0.5 - 4.0 mm
*Note: CVD coatings reach peak performance at higher speeds. Ensure sufficient coolant flow for continuous operations.*
Feedback from Global Machinists
⭐⭐⭐⭐⭐ "Workhorse for High-Speed Steel" - Daniel S., USA
"I've been running the DNMG150404-TM on 1045 steel at 300m/min. The T9115 grade is incredibly stable and tool life is very predictable."
⭐⭐⭐⭐⭐ "Premium Japan Quality" - H. Richter, Germany
"Consistent chip control and excellent surface finish. The -TM chipbreaker is very versatile for our semi-finishing operations."
⭐⭐⭐⭐ "Very Reliable" - Kenji T., Japan
"Stable performance in automated CNC lathes. No built-up edge even after long runs in alloy steel."
⭐⭐⭐⭐⭐ "Great for Mass Production" - Luca M., Italy
"Reduced our cycle times significantly. T9115 handles heat exceptionally well. Highly recommended."
⭐⭐⭐⭐⭐ "Genuine Tungaloy Performance" - A. Bennett, UK
"Original stock. Performs exactly as the catalog says. Fast delivery and high efficiency."
Technical Tooling Q&A
Q: Is T9115 better than T9125 for steel?
A: T9115 is optimized for high-speed continuous cutting, while T9125 offers more toughness for interrupted cuts. T9115 is superior for high-volume productivity.
Q: What is the benefit of the -TM chipbreaker?
A: The -TM geometry is a semi-finishing breaker that balances edge sharpness and strength, providing excellent chip evacuation at medium feeds.
Q: Which tool holder fits the DNMG1504 size?
A: It fits standard ISO holders like DDJNR/L 2525M15 or PDJNR/L 2020K15 using the 1504 (DNMG 43x) seat size.
Expert Tip: Maximizing CVD Performance
In precision machining, CVD Coated Carbide (T9115) reaches its full potential at higher surface speeds. Don't be afraid to push the Vc; the alumina coating is designed to handle the heat, protecting your indexable turning tool from premature wear.
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