Mitsubishi TPGX090204L NX2525 | Left-Hand Cermet Finishing Insert
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TPGX090204L NX2525
Mitsubishi Materials | High-Speed Steel Finishing Cermet (Left-Hand)
Superior Surface Finish Technology
The Mitsubishi TPGX090204L NX2525 is an ultra-precision Left-Hand (L) Cermet turning insert. As a G-class tolerance ground insert, it offers significantly higher dimensional accuracy than standard pressed inserts. The NX2525 Cermet grade is specifically engineered to resist chemical wear and oxidation at high cutting speeds, making it the premier choice for precision CNC boring and finishing of carbon and alloy steels where a mirror surface finish is required.
High-Speed NX2525 Cermet | 11° Positive Relief | Ground Finishing Edge
Technical Code Identification
Triangular Shape
11° Positive Relief
G-Class Tolerance
Special Geometry
9mm Edge Length
2.38mm Thick
0.4mm Radius
Left-Hand
ISO (Metric) vs ANSI (Inch) Comparison
| Technical Spec | ISO Model (Metric) | ANSI Model (Inch) |
|---|---|---|
| Part Number | TPGX090204L | TPGX 21.51L |
| Inscribed Circle (IC) | 5.56 mm | 0.219" (7/32") |
| Corner Radius | 0.4 mm | 0.016" (1/64") |
NX2525 Cermet Performance
The NX2525 grade is a non-coated Cermet substrate. Because Cermet has a low affinity for metal-to-metal bonding, it effectively eliminates built-up edge (BUE) in steel. This long-tail precision insert is ideal for maintaining tight tolerances over long finishing passes, ensuring the dimensions stay consistent from the first part to the last.
Precision Ground Edge
As a "G" tolerance insert, the periphery is ground to sub-micron accuracy. In boring bar applications, this precision prevents "chatter" and ensures that the tool pressure is distributed evenly, resulting in a cleaner shear and better surface integrity.
Recommended Cutting Parameters
| Workpiece Material | Speed ($v_c$) | Feed ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Low Carbon Steel | 150 - 350 m/min | 0.05 - 0.15 mm/rev | 0.1 - 0.8 mm |
| Alloy Steel | 120 - 300 m/min | 0.05 - 0.12 mm/rev | 0.1 - 0.6 mm |
COMPATIBLE LEFT-HAND HOLDERS
Designed for Left-Hand (L) tool paths. Pairs with S-STFPL or S-STGPL style boring bars.
Shop 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.