Mitsubishi TPMN160308 NX2525 | High-Gloss Cermet Turning Insert
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TPMN160308 NX2525
Mitsubishi Materials | High-Feed Cermet Finishing Specialist
Heavy-Duty Gloss Finishing for CNC Steel Turning
The Mitsubishi TPMN160308 NX2525 is a high-performance Cermet turning insert designed for users who need a mirror finish without compromising on cycle time. The NX2525 grade is a specialized non-coated cermet that offers incredible chemical stability, preventing the "welding" of steel to the tip. With a 0.8mm corner radius, this long-tail precision insert provides higher edge toughness than the 0.4mm version, making it the premier choice for high-gloss finishing on large steel shafts and internal boring.
NX2525 Cermet Grade | TPMN Flat-Top | 0.8mm Robust Radius
Technical Code Identification
Triangular Shape
11° Positive Relief
M-Class Tolerance
Flat-Top (No Chipbreaker)
16.5mm Edge Length
3.18mm Thick
0.8mm Radius
Cermet Grade
ISO (Metric) vs ANSI (Inch) Comparison
| Feature Spec | ISO (Metric) | ANSI (Inch Equivalent) |
|---|---|---|
| Model Number | TPMN160308 | TPMN 322 |
| Inscribed Circle (IC) | 9.525 mm | 0.375" (3/8") |
| Corner Radius | 0.8 mm | 0.0315" (1/32") |
NX2525 Cermet Advantage
NX2525 is Mitsubishi’s proprietary Cermet grade, blending the hardness of ceramic with the structural toughness of metal. Because it has a low affinity for iron-based materials, it prevents Built-Up Edge (BUE). This allows for extremely high surface speeds, ensuring a mirror finish on Steel and Cast Iron that carbide simply cannot match.
TPMN Flat-Top Strength
The TPMN series utilizes a flat-top geometry (no chipbreaker). This provides the maximum amount of material behind the cutting edge, which is essential when using cermet grades. Combined with the 0.8mm radius, this insert handles higher cutting forces and provides a significantly longer tool life in continuous steel finishing passes.
Recommended Cutting Parameters
| Material Group | Speed ($v_c$) | Feed ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Mild Steel / Carbon Steel | 180 - 400 m/min | 0.10 - 0.25 mm/rev | 0.1 - 1.5 mm |
| Alloy Steel (Hardened) | 150 - 320 m/min | 0.10 - 0.20 mm/rev | 0.1 - 1.2 mm |
COMPATIBLE HOLDERS
Designed for CTFPR/L 16 or CTGPR/L 16 heavy-duty boring bars.
Shop 16mm Boring Bars →
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.