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.