Mitsubishi DCMT070208 NX2525 Cermet Turning Insert for High-Feed Finish (10pcs)
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DCMT070208 NX2525
High-Speed Cermet | Robust 0.8mm Radius | Mirror Finish Grade
High-Feed Finishing Technology
NX2525 Grade (Titanium Cermet): Mitsubishi's NX2525 is a micro-grain Cermet grade designed for finishing. Unlike tungsten carbide, Cermet has a very low chemical affinity for steel, which prevents the material from "welding" to the insert edge. This eliminates surface tearing and results in a glossy, mirror-like finish. It thrives at high cutting speeds where standard carbide would fail due to heat.
DCMT Geometry (55° Diamond): The 55-degree shape offers the perfect clearance for profiling and facing. The positive rake angle reduces the cutting torque and heat generation, protecting the structural integrity of your workpiece while providing a clean "peeling" cut.
0.8mm Radius (The "Robust" Choice): The 0.8mm (08) radius is significantly stronger than the 0.2mm or 0.4mm versions. It allows for higher feed rates and provides better edge life when machining parts with slight surface scale or inconsistencies.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | DCMT070208 | 6.35 mm | 2.38 mm | 0.80 mm |
| Imperial | DCMT21.52 | 1/4" | 3/32" | 0.0315" (1/32") |
Recommended Cutting Parameters
*The 0.8mm radius allows for higher productivity. Maintain high surface speeds (Vc) to fully activate the Cermet properties.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Carbon Steel (1045) | 200 - 450 m/min | 0.10 - 0.25 mm/r | 0.30 - 1.80 mm |
| Alloy Steel (4140) | 150 - 350 m/min | 0.08 - 0.20 mm/r | 0.30 - 1.50 mm |
Compatible Tooling
Optimized for use with SDJCR/L or SDUCR/L 07-series screw-lock holders:
Shop 07 Series Tool HoldersCermet Tip: NX2525 vs. Carbide Grade
NX2525 (Cermet): The choice for high-speed continuous finishing. It provides a superior "chrome-like" finish on steel. However, it is sensitive to thermal shock—if using coolant, ensure the flow is high and consistent; otherwise, dry machining is often preferred.
VP15TF (PVD Carbide): Better suited for interrupted cuts, heavy scale, or gummy stainless steel where the toughness of carbide is required.
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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.