TaeguTec CNMG120408MT TT8115 | PVD Carbide Insert for Stainless Steel
Price shown is a starting point. Contact us for a precise quote based on your requirements.
TaeguTec CNMG120408MT TT8115
The HRSA Authority: High-Performance PVD Solution for Heat-Resistant Super Alloys & Stainless Steel
Product Overview
"Which turning insert grade offers the best tool life when machining Inconel or Titanium while preventing notch wear and work-hardening?"
The TaeguTec CNMG120408MT TT8115 is an 80° rhombic insert designed for the most demanding ISO M and ISO S materials. The TT8115 PVD grade features a specialized coating that excels in high-heat environments, preventing chemical wear and maintaining edge sharpness against abrasive alloys. The MT (Medium-Tough) chipbreaker, combined with a 0.8mm radius, provides enhanced edge strength for stable medium turning, ensuring excellent chip evacuation and reducing the risk of sudden tool failure in high-value components.
Key Features
Extreme thermal stability and coating adhesion designed specifically for heat-resistant super alloys (HRSA).
A robust corner radius provides increased durability for interrupted cuts and heavier depths of cut.
Optimized rake angle reduces cutting forces and prevents work-hardening of the workpiece surface.
Technical Specifications
ISO Code Decoding: CNMG120408MT
80° Rhom
0° Relief
Tolerance
Hole/Sinter
12.7mm L
4.76mm S
0.8mm RE
Chipbreaker
| Unit System | Designation | I.C. Size | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | CNMG120408MT | 12.7 mm | 0.8 mm |
| Imperial (ANSI) | CNMG432MT | 0.500" | 0.031" |
Recommended Cutting Parameters (ISO M/S)
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Stainless Steel (Austenitic) | 150 - 230 m/min | 0.15 - 0.40 mm/rev |
| Nickel Alloys (Inconel) | 35 - 70 m/min | 0.10 - 0.25 mm/rev |
Matching Toolholders
Standard fit for DCLNR/L 12, PCLNR/L 12, and MCLNR/L 12 external and internal boring bars.
Product Applications
- High-temperature turning of Aerospace turbine blades and flanges.
- Precision machining of Stainless Steel pump bodies and valve stems.
- Turning of Medical-grade Titanium alloys requiring high bio-compatibility.
- Stable machining of Duplex and Super-Duplex Stainless Steels.
TaeguTec Grade Comparison (Stainless & HRSA)
| Grade Name | Coating Strategy | Primary Application |
|---|---|---|
| TT8115 (PVD) | Advanced High-Heat PVD | Top Performance: Inconel, Titanium, Stainless. |
| TT8020 (PVD) | General Purpose PVD | Versatile: Mixed Stainless and Alloy Steel. |
Why Choose TaeguTec?
A global leader within the IMC Group, TaeguTec represents the absolute frontier of industrial metallurgy. The TT8115 grade is engineered for the high-stakes aerospace and energy sectors, where material costs are high and failure is not an option. By selecting TaeguTec, you choose industrial-grade consistency, superior heat management, and a tool that delivers professional performance in the world's most difficult-to-cut materials.
Verified Global Feedback
"Flawless on Titanium"
We machine medical implants and needed a grade that wouldn't overheat. TT8115 stays sharp and doesn't pull material. Exceptional quality.
— MedTech Manufacturing (USA)"Best for Stainless 316L"
Excellent chip control with the MT breaker. The 0.8mm radius gives us the edge strength we need for interrupted cuts on large flanges.
— Petro-Industrie GmbH (Germany)"Stable in High-Heat Cuts"
Predictable edge wear on Hastelloy. It allows us to keep our CNC machines running longer without manual offsets.
— Aero-Components (Japan)Frequently Asked Questions
1. Is TT8115 better than CVD grades for Stainless Steel?
PVD grades like TT8115 have thinner, sharper edges, which are critical for preventing work-hardening in gummy materials like Stainless and HRSA.
2. Should I use coolant with this insert?
High-pressure coolant is strongly recommended for ISO M/S materials to assist in chip breaking and to maintain the integrity 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.