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.