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.
Need Help With taegutec Inserts?
Looking for a taegutec equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This taegutec insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.