TaeguTec DCMT11T304MT TT8115 | CVD Carbide Turning Insert
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TaeguTec DCMT11T304MT TT8115
Advanced CVD Gold Grade: High-Speed Precision for Steel & Cast Iron Machining
Product Overview
"Which insert grade is the most reliable for high-speed continuous turning in carbon steels and gray iron while maintaining tight tolerances?"
The TaeguTec DCMT11T304MT TT8115 is a high-performance solution tailored for ISO P (Steel) and ISO K (Cast Iron). The TT8115 grade is a premium CVD-coated carbide (Gold Grade) that offers exceptional resistance to flank and crater wear during high-speed operations. The MT (Medium-Turning) chipbreaker geometry features a balanced rake angle that facilitates smooth chip evacuation and prevents workpiece scratching. With a 0.4mm corner radius, this insert is optimized for precision finishing passes, providing excellent surface Ra values and long tool life in stable machining environments.
Key Features
Advanced multi-layer CVD coating designed specifically for high-velocity cutting, providing superior thermal protection for the carbide substrate.
A reinforced edge design that bridges the gap between light finishing and medium-duty turning, ensuring reliable chip breaking.
Highly effective in low-carbon steels, alloy steels, and gray cast iron, reducing the need for multiple insert types in your shop.
Technical Specifications
ISO Code Decoding: DCMT11T304MT
55° Rhom
7° Relief
Tolerance
Hole/Sint
9.525mm IC
3.97mm S
0.4mm RE
Med-Turn
| Unit System | Designation | I.C. Dimension | Thickness (S) |
|---|---|---|---|
| Metric (ISO) | DCMT11T304MT | 9.525 mm | 3.97 mm |
| Imperial (ANSI) | DCMT3(2.5)1MT | 0.375" | 0.156" |
Recommended Cutting Parameters
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Carbon/Alloy Steel (ISO P) | 180 - 450 m/min | 0.10 - 0.25 mm/rev |
| Cast Iron (ISO K) | 150 - 400 m/min | 0.10 - 0.22 mm/rev |
Compatible Toolholders
This DCMT 11T3 insert fits standard external and internal boring bars including SDJCR/L 11, SDNCN 11, and S-SDUCR/L 11 precision holders.
Product Applications
- High-speed finishing of automotive shafts and gear components.
- Precision turning of industrial steel valves and fittings.
- Internal boring of cast iron housings where thermal stability is critical.
- Finishing passes in mold and die steel parts requiring high Ra gloss.
TaeguTec Grade Comparison Benchmark
| Grade Name | Coating | Main Benefit |
|---|---|---|
| TT8115 (Gold) | CVD Coated | Speed King: Best for high-speed finishing in Steel/Cast Iron. |
| TT8125 (Gold) | CVD Coated | General Purpose: Balanced toughness and wear resistance. |
Why Choose TaeguTec?
TaeguTec, a proud member of the IMC Group, is a global leader in providing advanced machining solutions. The TT8115 CVD Gold Grade series represents the cutting edge of coating technology, specifically designed for shops that operate at the highest possible surface feet per minute (SFM). By integrating high-purity carbide substrates with a superior thermal barrier, TaeguTec ensures that your CNC machines operate longer with fewer tool changes. When surface quality and production speed define your bottom line, TaeguTec TT8115 is the industrial choice for excellence.
Global Industry Feedback
"Outstanding for High-Speed Steel"
We use TT8115 for our 4140 steel shafts. The tool life at high RPMs is incredible compared to standard grades.
— Precision Machining Corp (USA)"Exzellente Standzeit"
The MT chipbreaker is very stable. We achieved a mirror finish in gray iron without any vibration issues.
— Werkzeug Scholz (Germany)"Solid for Semi-Finishing"
A very consistent performer. We've seen a 20% reduction in cycle time due to the higher speed capability.
— Meccanica S.r.l (Italy)Frequently Asked Questions
1. Is TT8115 suitable for interrupted cuts?
TT8115 is optimized for high-speed continuous cutting. For heavy interrupted cuts, we recommend a tougher grade like TT8125 or TT8135.
2. Can I use this for Stainless Steel?
While it can cut some stainless, it is primarily designed for Steel and Cast Iron. For optimal performance in Stainless, use TaeguTec TT9080 PVD grade.
Technical FAQ & Buying Guide
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.
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.
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.
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.
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.
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.