Tungaloy DNMG150408-TM T9115 CVD Coated Carbide Turning Insert

$88.31 USD

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Description

Tungaloy DNMG150408-TM T9115 Turning Insert

High-Speed Steel Machining | Premium T9115 CVD Grade | Made in Japan

What is the most efficient insert for high-speed semi-finishing of steel?

The Tungaloy DNMG150408-TM T9115 is a premium CVD coated carbide turning insert designed specifically for the high-efficiency machining of carbon and alloy steels. Utilizing the cutting-edge T9115 grade, this insert features a specialized thick Al2O3 (alumina) layer that provides an incredible thermal barrier, making it ideal for continuous, high-speed cutting where heat resistance is critical. The -TM chipbreaker is a versatile semi-finishing geometry that balances edge sharpness with robust strength. With a 0.8mm corner radius, this Japan-made indexable turning tool provides superior edge durability and excellent surface finish. For professional CNC machining shops, this insert is the go-to solution for maximizing tool life and reducing cycle times. By choosing this long-tail keywords optimized product, you are investing in Tungaloy's world-renowned precision and performance.

Decoding the DNMG150408-TM Technical Nomenclature

D
55° Rhombic
N
0° Clearance
M
M-Tolerance
G
Double Sided
15
15.5mm Edge
04
4.76mm Thick
08
0.8mm Radius
-TM
Semi-Finish

Technical Specs: Metric vs. Imperial Comparison

ISO Parameter Metric Unit Imperial Designation
ISO Model Name DNMG150408-TM DNMG432-TM
Inscribed Circle (IC) 12.7 mm 1/2 inch
Corner Radius (RE) 0.8 mm 1/32 inch

Why is the T9115 grade superior for high-speed steel turning?

The T9115 Grade represents the pinnacle of Tungaloy’s CVD coating technology. In precision machining, heat generation is the primary cause of tool failure. T9115 addresses this with "PremiumTec" technology, creating a smoother coating surface that reduces friction and prevents chips from welding to the edge. The -TM chipbreaker features a balanced rake angle that lowers cutting forces while maintaining chip breaking efficiency across various depths. For CNC machining of large steel workpieces, the 15mm edge length and 0.8mm radius of this indexable turning tool provide the stability required for aggressive feed rates and heavy material removal.

Recommended Cutting Parameters (T9115)

  • Cutting Speed (Vc): 150 - 350 m/min (Recommended for Carbon/Alloy Steel)
  • Feed Rate (f): 0.15 - 0.50 mm/rev
  • Depth of Cut (ap): 0.8 - 4.5 mm

*Tip: T9115 is optimized for continuous cutting. For interrupted cuts, ensure high-pressure coolant is applied to the cutting zone.*

Feedback from Global Machinists

⭐⭐⭐⭐⭐ "Extreme Tool Life" - Mark T., USA
"Switched to DNMG150408-TM T9115 for our 4140 shafts. We increased the speed by 20% and the tool life actually improved. Japan quality is unbeatable."

⭐⭐⭐⭐⭐ "Perfect Chip Control" - Dieter S., Germany
"The -TM breaker is very stable. No bird-nesting even at high speeds. This cVD coated carbide is worth every penny for production runs."

⭐⭐⭐⭐ "Very Stable" - Kenji O., Japan
"Consistent performance in automated lathes. T9115 handles the heat much better than other brands we've tested in alloy steel."

⭐⭐⭐⭐⭐ "Great for Mass Production" - Luca B., Italy
"Reduced our machine downtime significantly. The 0.8mm radius is very strong. Exceptional indexable turning tool."

⭐⭐⭐⭐⭐ "Fast Shipping & Genuine" - S. Richards, UK
"Original Tungaloy stock. Fast delivery. These inserts are the backbone of our steel turning department."

Technical Tooling Q&A

Q: Can I use T9115 for stainless steel?

A: T9115 is optimized for steel. For stainless, Tungaloy AH series or PVD grades are recommended to prevent work hardening and adhesion.

Q: What is the benefit of the -TM chipbreaker?

A: It is a semi-finishing breaker that works across a broad range of applications, providing excellent chip evacuation and reducing edge buildup.

Q: Which holder fits the DNMG1504 size?

A: It fits standard ISO holders like DDJNR/L 2525M15 or PDJNR/L 2020K15 using the 15mm (4xx) seat size.

Expert Tip: Maximizing CVD Efficiency

In precision machining, CVD Coated Carbide (T9115) thrives at high surface speeds. Unlike PVD, the thick alumina layer requires heat to reach its peak lubricating properties. Push your speeds higher for the best tool life and finish.

© Technical Content by cnchome-beyond.com - Japan Tooling Excellence

Technical FAQ & Buying Guide

Are your carbide inserts interchangeable with major brands like Sandvik, Iscar, or Kennametal?

Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.

How do I choose the correct insert grade and chipbreaker for machining Stainless Steel (M) vs. Carbon Steel (P)?

We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:

  • For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
  • For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
What are the recommended cutting speed (Vc) and feed rate (f) parameters to maximize tool life?

The optimal cutting parameters vary depending on the workpiece hardness and operation type:

  • For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
  • For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Do you offer bulk discounts or wholesale pricing for machine shops and distributors?

Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.

What is your international shipping policy and typical lead time for orders?

We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.

How do you guarantee the quality and tolerance precision of your CNC tools?

All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.