Taegutec TCMT16T308MT TT8020 Carbide Insert for CNC Turning (10pcs)
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TaeguTec TCMT16T308MT TT8020
Heavy-Duty Stainless Specialist: Maximum Reliability for Large Workpieces and Tough Alloys
Product Overview
"When machining large stainless steel components, edge reliability is everything. The 16mm TCMT substrate combined with TT8020 toughness is built for the long haul."
The TaeguTec TCMT16T308MT TT8020 is a robust 16mm triangular turning insert optimized for Stainless Steel (ISO M) and Low-Carbon Steels. This large-format insert provides the thermal mass and structural rigidity required for machining large-diameter shafts, valves, and flanges. The TT8020 grade is a sub-micron PVD-coated carbide that excels in toughness, preventing the notch wear and thermal cracking common in austenitic stainless steels. With a 0.8mm corner radius and the MT (Medium Turning) chipbreaker, this insert is the go-to choice for stable, vibration-free medium-duty turning and boring in gummy or work-hardening materials.
Core Advantages
Specially engineered to resist built-up edge (BUE) and withstand the mechanical shocks of interrupted cuts in difficult alloys.
The large substrate effectively dissipates heat, preventing plastic deformation of the tool tip during long, continuous cuts in stainless steel.
Provides a significantly more durable cutting edge for machining rough surfaces or forged skins while allowing for increased feed rates.
Technical Specifications
ISO Designation Decoding: TCMT 16T308 MT
Triangle
7° Relief
Tol. Class M
W/ Hole
16.5mm L
3.97mm T
0.8mm RE
| Standard | Model | Side Length (L) | Thickness (S) |
|---|---|---|---|
| Metric | TCMT 16T308 MT | 16.50 mm | 3.97 mm |
| Imperial | TCMT 32.52 MT | 0.650" | 0.156" |
Recommended Cutting Parameters (TT8020)
| Material Group | Vc (m/min) | fn (mm/rev) |
|---|---|---|
| Stainless Steel (Austenitic) | 80 - 180 | 0.15 - 0.45 |
| Low Carbon / Alloy Steel | 120 - 240 | 0.15 - 0.40 |
Compatible Tool Holders
This insert is precision-matched for TCMT 16 size external tool holders and large boring bars.
Industrial Applications
- Medium to rough turning of large stainless steel shafts and axles.
- Machining of forged stainless steel pipe flanges and connectors.
- Internal boring of heavy-walled stainless components for the chemical industry.
- Universal application for shops machining mixed batches of stainless steel and carbon steel forgings.
Choosing Your Stainless Grade
Selected here. Sub-micron PVD for interrupted cuts and low-to-medium speeds. Best for reliability.
Optimized for higher surface speeds (Vc) in stable, continuous stainless steel turning.
Frequently Asked Questions
1. Is the 0.8mm radius better for large parts?
Yes. The 0.8mm radius (this insert) provides significantly more strength to the corner, allowing you to push higher feed rates (fn) which is critical for productivity when machining larger diameters.
2. How does the 16mm size help in stainless turning?
Stainless steel is a poor conductor of heat. The larger 16mm carbide substrate acts as a heat sink, drawing heat away from the cutting tip more effectively than smaller 11mm or 09mm inserts, thereby extending tool life.
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.