Taegutec TCMT110204MT TT8020 Carbide Insert for CNC Turning (10pcs)
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TaeguTec TCMT110204MT TT8020
Mastering Stainless Steel: Extreme Toughness for Unstable Conditions and Interrupted Cuts
Product Overview
"Solve the challenge of work-hardening materials with the TT8020—a grade engineered for the demanding heat and pressure of stainless steel machining."
The TaeguTec TCMT110204MT TT8020 is an 11mm triangular turning insert specifically designed for Stainless Steel (ISO M) and Steel (ISO P). The TT8020 grade is a sub-micron PVD-coated carbide that prioritizes edge toughness and resistance to built-up edge (BUE), making it the primary choice for interrupted cuts or low-speed operations where thermal cracking is a risk. The MT (Medium Turning) chipbreaker features a positive rake angle that shears through gummy materials with ease, while the 0.4mm corner radius ensures precise finishing and excellent surface quality on delicate workpieces.
Core Advantages
A highly fracture-resistant grade that excels in interrupted cuts and unstable machine setups where harder grades fail.
The polished PVD surface prevents material welding (BUE), a common issue when machining austenitic stainless steels like 304 and 316.
Optimized for medium-sized boring bars and external holders, offering the rigidity needed for small-to-medium component turning.
Technical Specifications
ISO Designation Decoding: TCMT 110204 MT
Triangle
7° Relief
Tol. Class M
W/ Hole
11.0mm L
2.38mm T
0.4mm RE
| Standard | Model | Side Length (L) | Thickness (S) |
|---|---|---|---|
| Metric | TCMT 110204 MT | 11.00 mm | 2.38 mm |
| Imperial | TCMT 21.51 MT | 0.433" | 0.094" |
Recommended Cutting Parameters (TT8020)
| Material Group | Vc (m/min) | ap (mm) |
|---|---|---|
| Stainless Steel (Austenitic) | 80 - 180 | 0.30 - 2.00 |
| Low Carbon / Alloy Steel | 120 - 240 | 0.30 - 1.80 |
Compatible Tooling
This insert is precision-matched for TCMT 11 size holders and internal boring bars.
Industrial Applications
- Finishing of stainless steel fittings and medical device components.
- Boring operations in austenitic stainless steel pipes (300 series).
- Machining of low-rigidity parts where tool vibration is a concern.
- Universal machining for shops handling a high mix of steel and stainless materials.
Grade Optimization Guide
Selected here. Ideal for stainless steel and interrupted cuts. Maximum reliability in unstable conditions.
The multi-material alternative for higher speeds in stainless steel and super alloys.
Frequently Asked Questions
1. Is TT8020 better than TT8125 for Stainless?
Yes. While TT8125 is a great steel grade, TT8020 is specifically formulated with higher toughness and better BUE resistance, which is essential for the gummy nature of stainless steel.
2. Can this insert be used for interrupted cuts?
Absolutely. The combination of the TCMT positive geometry and the TT8020 tough substrate makes this one of the best choices for interrupted turning and boring in stainless steel.
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.