Mitsubishi TCMT16T304 NX2525 | Mirror Finish Cermet Turning Insert
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TCMT16T304 NX2525
Mitsubishi Materials | The Standard for Mirror-Finish Steel Turning
The Mitsubishi TCMT16T304 NX2525 is a high-performance turning cermet insert engineered for precision finishing operations. Utilizing the NX2525 uncoated cermet grade, this tool provides exceptional chemical stability and resistance to built-up edge (BUE), which is critical for achieving a mirror-like surface finish on carbon and alloy steels. As a preferred long-tail precision tool, it ensures high dimensional accuracy and long tool life in high-speed applications.
Cermet Technology | G-Class Precision | Genuine Mitsubishi Japan
ISO Identification Code
Triangular Shape
7° Relief Angle
M-Class Tolerance
Fixing Hole
16.5mm Edge
3.97mm Thick
0.4mm Radius
Dimensional Comparison
| Attribute | ISO (Metric) | ANSI (Inch) |
|---|---|---|
| Model Reference | TCMT16T304 | TCMT 32.51 |
| Inscribed Circle (IC) | 9.525 mm | 0.375" |
| Thickness (S) | 3.97 mm | 0.156" |
| Nose Radius (RE) | 0.4 mm | 0.016" |
NX2525 Cermet Grade
The NX2525 grade is a specialized cermet (Ceramic-Metal composite). Unlike standard carbide, it has a low affinity for metal workpieces, which virtually eliminates built-up edge. It is designed specifically for high-speed finishing of steel, offering superior wear resistance and maintaining a sharp cutting edge for extended periods.
Optimized Chip Control
The TCMT geometry features a 7° positive relief angle, reducing cutting force and heat generation. This indexable finishing insert is optimized for light depths of cut, ensuring excellent chip evacuation and preventing workpiece scratching in long-run CNC production.
Recommended Cutting Data
| Material Group | Speed ($v_c$) | Feed ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Low Carbon Steel | 150 - 350 m/min | 0.05 - 0.20 mm/rev | 0.1 - 1.2 mm |
| Alloy Steel | 120 - 280 m/min | 0.05 - 0.15 mm/rev | 0.1 - 1.0 mm |
PRECISION HOLDER MATCHING
Optimized for use with STFCR/L boring bars and STGCR/L external turning holders.
Shop Matching Tool Holders →
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.