TaeguTec CNMG120404MT TT8115 | PVD Carbide Insert for Stainless Steel
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TaeguTec CNMG120404MT TT8115
The Super Alloy Specialist: Advanced PVD Coating for Heat-Resistant and Stainless Materials
Product Overview
"Which carbide grade is best for preventing work-hardening and notch wear when machining tough stainless steels or Inconel?"
The TaeguTec CNMG120404MT TT8115 is an 80° rhombic turning insert engineered for maximum stability in ISO M (Stainless Steel) and ISO S (HRSA) applications. Featuring the high-performance TT8115 PVD grade, this insert utilizes a thin, sharp, and highly heat-resistant coating that prevents the built-up edge (BUE) common in gummy materials. The MT (Medium-Tough) chipbreaker offers a sharp positive rake angle, which significantly reduces cutting pressure and heat generation, protecting the tool edge from premature failure in aerospace and medical grade materials.
Key Features
A specialized coating with superior adhesion and thermal stability, designed to resist notch wear in nickel-based alloys.
Reinforced yet sharp cutting action that slices through work-hardening materials without excessive vibration.
Optimized chipbreaker design minimizes heat transfer to the workpiece, ensuring dimensional accuracy.
Technical Specifications
ISO Code Breakdown: CNMG120404MT
80° Rhom
0° Relief
Tolerance
Clamping
12.7mm IC
4.76mm S
0.4mm RE
Med-Tough
| Unit System | Designation | I.C. Size | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | CNMG120404MT | 12.7 mm | 0.4 mm |
| Imperial (ANSI) | CNMG431MT | 0.500" | 0.016" |
Recommended Cutting Parameters (ISO M/S)
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Stainless Steel (304/316) | 140 - 220 m/min | 0.10 - 0.30 mm/rev |
| Heat-Resistant Alloys (HRSA) | 30 - 60 m/min | 0.08 - 0.20 mm/rev |
Recommended Holders
Designed for use with standard DCLNR/L 12, PCLNR/L 12, and MCLNR/L 12 external and internal toolholders.
Product Applications
- Medium-to-light turning of Austenitic and Duplex Stainless Steels.
- Machining of Nickel-based (Inconel), Cobalt-based, and Titanium alloys.
- Aerospace engine components and medical device manufacturing.
- Critical CNC operations where tool integrity and surface Ra are vital.
TaeguTec Grade Comparison (Stainless & HRSA)
| Grade Name | Coating Type | Primary Application |
|---|---|---|
| TT8115 (PVD) | High-Heat PVD | Premium: HRSA and tough Stainless. |
| TT8020 (PVD) | General PVD | Universal: Multi-material Stainless. |
Why Choose TaeguTec?
A global leader within the IMC Group, TaeguTec represents the absolute frontier of cutting tool metallurgy. The TT8115 grade is the result of intensive R&D focused on the aerospace sector's most difficult materials. Choosing TaeguTec means selecting a partner that understands the high stakes of CNC manufacturing—delivering consistency, precision, and the lowest cost-per-part in professional industrial applications.
Verified Global Feedback
"Reliable on Inconel 718"
We struggled with notch wear on our aero parts. The TT8115 PVD grade has completely stabilized our tool life. Worth every penny.
— Aerospace Machining (USA)"Perfect for 316L"
Sharp edges and zero built-up edge. The finish on our stainless medical valves is flawless with the MT breaker.
— MedTech Manufacturing (Germany)"Stable Edge Integrity"
Predictable performance over long shifts. The 0.4mm radius is very precise for tight tolerance turning.
— Precision Components (Japan)Frequently Asked Questions
1. Can TT8115 be used on Carbon Steel?
While it can, its coating is optimized for high-heat alloys and stainless. For standard carbon steel, our TT9225 grade will provide better cost efficiency.
2. Does this grade require coolant?
High-pressure coolant is highly recommended for Stainless and HRSA to assist in chip evacuation and further protect the PVD coating from extreme temperatures.