TaeguTec CNMG120408EM TT9080 | PVD Stainless Steel Turning Insert
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TaeguTec CNMG120408EM TT9080
The Stainless Steel Specialist: High-Toughness PVD Grade for Demanding Medium Machining
Product Overview
"Which carbide insert is best for stable chip breaking and thermal shock resistance when turning 300-series stainless steel or Inconel?"
The TaeguTec CNMG120408EM TT9080 is an 80° rhombic insert optimized for ISO M (Stainless Steel) and ISO S (Super Alloys). The TT9080 PVD grade utilizes a sub-micron substrate with exceptional edge strength and a heat-resistant coating to prevent built-up edge (BUE). The EM (Medium-Duty) chipbreaker is designed with a unique geometry that ensures stable chip evacuation across a wide range of feed rates, significantly reducing the risk of work hardening on the component surface.
Key Features
A thin, smooth PVD coating over a tough substrate prevents chemical wear and notch wear in gummy materials.
Medium-duty breaker designed for both continuous and light interrupted cuts with excellent chip evacuation.
The perfect balance for medium machining, offering robust edge strength and high surface quality.
Technical Specifications
ISO Code Decoding: CNMG120408EM
80° Rhom
0° Relief
Tolerance
Hole/Sint
12.7mm IC
4.76mm S
0.8mm RE
Med-Duty
| Unit System | Designation | I.C. Dimension | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | CNMG120408EM | 12.7 mm | 0.8 mm |
| Imperial (ANSI) | CNMG432EM | 0.500" | 0.031" |
Recommended Cutting Parameters (ISO M/S)
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Stainless Steel (Austenitic) | 140 - 240 m/min | 0.15 - 0.40 mm/rev |
| High-Temp Alloys (Inconel) | 35 - 75 m/min | 0.12 - 0.35 mm/rev |
Compatible Toolholders
Standard fit for all 12.7mm I.C. turning tools including DCLNR/L 12, PCLNR/L 12, and MCLNR/L 12 holders.
Product Applications
- Medium-duty turning of stainless steel pump valves and hydraulic fittings.
- Precision CNC machining of aerospace components in Titanium or Inconel.
- Manufacturing of high-grade surgical instruments and medical equipment.
- Reliable general turning in materials prone to work hardening and heat buildup.
TaeguTec Grade Comparison (Stainless)
| Grade Name | Coating Focus | Best Use Case |
|---|---|---|
| TT9080 (PVD) | Heat/Wear Resistance | Professional: Precision Stainless/Exotics. |
| TT8125 (PVD) | High Toughness | General: Roughing & Interrupted cuts. |
Why Choose TaeguTec?
A global leader in the IMC Group, TaeguTec is at the absolute frontier of metallurgical innovation. The TT9080 grade represents the highest standard of sub-micron PVD technology, specifically engineered to eliminate built-up edge and chemical wear in stainless steel. By choosing TaeguTec, you invest in industrial-grade consistency that reduces machine downtime and ensures the highest profitability per part produced.
Verified Global Feedback
"The Best for 316 Stainless"
We turn thousands of stainless fittings weekly. TT9080 with the EM breaker gives us perfect chips and zero built-up edge problems.
— Machining Solutions (Germany)"Reliable on Titanium"
Excellent heat resistance. Used these for aerospace bushings; the tool life was double what we got from our previous supplier.
— Precision Aero (USA)"Consistent Quality"
Predictable wear patterns. Makes it easy to plan tool changes in our automated CNC production line.
— Industrial Machining (Japan)Frequently Asked Questions
1. Is the EM chipbreaker suitable for roughing?
The EM (Medium-Duty) breaker is designed for medium turning. For heavy roughing of stainless steel, we recommend the ET or MT geometries.
2. How does TT9080 handle dry machining?
While highly heat resistant, for stainless steel and exotics, high-pressure coolant is strongly recommended to maintain surface integrity and maximize tool life.
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.