TaeguTec CNMG120404PC TT8115 | Precision PVD Turning Insert
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TaeguTec CNMG120404PC TT8115
Precision Finishing Excellence: High-Heat Resistance PVD Grade for Exotic Alloys
Product Overview
"Which turning insert is most effective for achieving a mirror-like finish on Titanium and Inconel while maintaining long tool life at higher cutting speeds?"
The TaeguTec CNMG120404PC TT8115 is a specialized 80° rhombic insert engineered for high-precision finishing in ISO M (Stainless Steel) and ISO S (Heat Resistant Super Alloys). The TT8115 PVD grade features advanced thermal stability and high-hardness coating layers that prevent chemical wear in high-temperature zones. The PC (Positive Finishing) chipbreaker is designed with a sharp cutting edge to minimize work hardening and cutting resistance, ensuring exceptional surface integrity on sensitive workpieces.
Key Features
TT8115 provides a superior heat barrier, allowing for increased cutting speeds without sacrificing edge sharpness.
A sharp, positive rake angle optimized for fine finishing and low-force machining of thin-walled parts.
High-density carbide base ensures extreme edge retention and dimensional accuracy across long production runs.
Technical Specifications
ISO Code Decoding: CNMG120404PC
80° Rhom
0° Relief
Tolerance
Sintered
12.7mm IC
4.76mm S
0.4mm RE
Finish
| Unit System | Designation | I.C. Dimension | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | CNMG120404PC | 12.7 mm | 0.4 mm |
| Imperial (ANSI) | CNMG431PC | 0.500" | 0.015" |
Recommended Cutting Parameters (ISO S/M)
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Titanium Alloys / Inconel | 40 - 90 m/min | 0.05 - 0.20 mm/rev |
| Stainless Steel (Finishing) | 150 - 250 m/min | 0.10 - 0.25 mm/rev |
Compatible Toolholders
This precision insert fits all standard DCLNR/L 12, PCLNR/L 12, and MCLNR/L 12 toolholders and internal boring bars.
Product Applications
- High-speed finishing of aerospace engine components (Inconel, Waspaloy).
- Precision turning of medical-grade Titanium implants and orthopedic tools.
- Mirror-finish machining of high-alloy stainless steel decorative and functional parts.
- Fine finishing of small diameter shafts requiring strict dimensional control.
TaeguTec PVD Grade Comparison
| Grade Name | Thermal Focus | Best Use Case |
|---|---|---|
| TT8115 (PVD) | Extreme Resistance | Precision: High-speed finishing on HRSA. |
| TT8125 (PVD) | Fracture Toughness | Stability: Interrupted/Rough Stainless cuts. |
Why Choose TaeguTec?
As a key member of the IMC Group, TaeguTec leads the industry in metallurgical innovation. The TT8115 grade is the result of focused research into the chemical interactions of high-temperature alloys at the cutting edge. By choosing TaeguTec, you are investing in unmatched tool consistency, enabling your CNC shop to meet the most stringent quality standards in the aerospace and medical sectors.
Verified Global Feedback
"Flawless Finish on Ti"
We use these for Titanium medical parts. The PC breaker is incredibly sharp—no burrs and the surface finish is excellent right off the machine.
— MedTech Solutions (USA)"Best for Aerospace"
Finally a PVD grade that doesn't burn out on Inconel. The TT8115 handles the high heat perfectly for our finishing passes.
— Aero-Precision GmbH (Germany)"Very Consistent"
The 0.4mm radius is perfect for tight tolerances. We get very predictable tool life across our 316L production runs.
— Precision Components (Japan)Frequently Asked Questions
1. Is the PC chipbreaker suitable for roughing?
No, the PC (Positive Finishing) breaker is designed for light finishing cuts. For roughing, we recommend the MT or RT geometries.
2. How does TT8115 handle dry machining?
While highly heat resistant, using high-pressure coolant is strongly advised for finishing Stainless and Super Alloys to ensure chip evacuation and surface quality.
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.