TaeguTec CNMG120408ET TT9080 | PVD Stainless Steel Turning Insert
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TaeguTec CNMG120408ET TT9080
Advanced Sub-Micron PVD Grade: The Ultimate Solution for Stainless & Heat-Resistant Alloys
Product Overview
"Which CNC insert provides the highest reliability when turning gummy stainless steel or high-temp Inconel without premature edge chipping?"
The TaeguTec CNMG120408ET TT9080 is a high-performance turning insert engineered for ISO M (Stainless Steel) and ISO S (Exotic Alloys). Utilizing the elite TT9080 PVD grade, it features a sub-micron substrate with a smooth, heat-resistant coating that prevents Built-Up Edge (BUE). The ET (Tough-Edge) chipbreaker is designed with a reinforced geometry to provide exceptional stability during medium-duty cuts, ensuring predictable tool life even in unstable machining conditions or interrupted cuts.
Key Features
A sub-micron carbide grade that offers a perfect balance of hardness and shock resistance for exotic alloys.
Engineered for "Tough" applications, the ET breaker prevents edge notch wear and controls chips effectively in high-pressure environments.
The ultra-smooth PVD coating dissipates heat quickly, reducing thermal cracking in long-duration stainless steel passes.
Technical Specifications
ISO Code Decoding: CNMG120408ET
80° Rhom
0° Relief
Tolerance
Hole/Sint
12.7mm IC
4.76mm S
0.8mm RE
Tough Edge
| Unit System | Designation | I.C. Dimension | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | CNMG120408ET | 12.7 mm | 0.8 mm |
| Imperial (ANSI) | CNMG432ET | 0.500" | 0.031" |
Recommended Cutting Parameters (ISO M/S)
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Stainless Steel (304/316) | 110 - 200 m/min | 0.15 - 0.45 mm/rev |
| Heat Resistant Alloys (Inconel) | 25 - 60 m/min | 0.15 - 0.35 mm/rev |
Compatible Toolholders
This insert is compatible with standard 12.7mm I.C. holders including DCLNR/L 12, PCLNR/L 12, and MCLNR/L 12 external turning tools and boring bars.
Product Applications
- High-precision turning of aerospace engine components made from Inconel or Titanium.
- Machining of corrosion-resistant stainless steel valves and pump shafts.
- Medical device manufacturing using biocompatible alloy materials.
- Medium-duty CNC turning where workpiece stability is a challenge.
TaeguTec Grade Comparison (Stainless Focus)
| Grade Name | Coating Focus | Best Use Case |
|---|---|---|
| TT9080 (PVD) | Sub-Micron PVD | Elite: Stainless & HRSA with high toughness needs. |
| TT9225 (CVD) | Tough CVD | General: High-speed continuous turning in ISO M. |
Why Choose TaeguTec?
As a global leader in the IMC Group, TaeguTec represents the pinnacle of South Korean metallurgical engineering. The TT9080 grade is specifically formulated to bridge the gap between high-speed wear resistance and critical edge toughness. When you choose the CNMG120408ET series, you are investing in industrial-grade reliability that reduces cycle times, minimizes scrap, and ensures superior surface finishes on your most expensive workpiece materials.
Verified Global Feedback
"The Best for 316L"
Turning 316L stainless shafts was a nightmare for edge chipping until we switched to the ET breaker. TT9080 is worth every cent.
— Precision Aero Parts (USA)"Exotic Alloy Specialist"
Very consistent performance on Inconel 718. The PVD coating handles the heat better than anything else in our shop.
— Fertigungstechnik GmbH (Germany)"Highly Reliable"
Predictable tool life is key for our lights-out manufacturing. TaeguTec delivers exactly what they promise.
— Industrial Precision Ltd (Japan)Frequently Asked Questions
1. Is the ET breaker suitable for finishing?
The ET (Tough Edge) breaker is designed for medium-duty turning with a focus on edge stability. For light finishing, consider the EA or PC geometries.
2. Does this grade require high-pressure coolant?
While not strictly required, high-pressure coolant is highly recommended for Stainless and Super Alloys to maximize the heat-shielding properties of the PVD coating.
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.