Mitsubishi DCMT070204 NX2525 Cermet Turning Insert for Mirror Finish (10pcs)
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DCMT070204 NX2525
High-Velocity Cermet | Mirror Finish Grade | 55° Diamond Precision
The Cermet Advantage: High-Gloss Finishing
NX2525 Grade (Titanium-Based Cermet): The NX2525 is a premium micro-grain Cermet. Unlike carbide, Cermet can withstand much higher cutting speeds while maintaining a sharp edge. Its superior resistance to thermal cracking and oxidation makes it the industry standard for achieving reflective, high-gloss surface finishes on carbon steels, alloy steels, and ductile irons.
Standard Chipbreaker (Versatile Finisher): This DCMT geometry features a positive rake angle that reduces cutting forces and heat. It is optimized for light to medium finishing depths, ensuring excellent chip evacuation and preventing the "re-cutting" of chips that often ruins surface quality.
Nose Radius (0.4mm): The 0.4mm radius (04) provides excellent edge toughness. It is robust enough to handle the pressures of finishing while producing a superior Ra value (surface roughness) compared to larger radii.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | DCMT070204 | 6.35 mm | 2.38 mm | 0.40 mm |
| Imperial | DCMT21.51 | 1/4" | 3/32" | 0.0157" (1/64") |
Recommended Cutting Parameters
*Cermet requires high spindle speeds to work effectively. Avoid slow speeds and heavy interrupted cuts.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Mild / Carbon Steel | 150 - 400 m/min | 0.05 - 0.20 mm/r | 0.20 - 1.50 mm |
| Alloy Steel / SCM | 120 - 300 m/min | 0.05 - 0.15 mm/r | 0.20 - 1.20 mm |
Compatible Tooling
Maximum stability for finishing with SDJCR/L or SDUCR/L holders:
Shop 07 Series Tool HoldersPro-Tip: Cermet (NX2525) vs. Carbide (VP15TF)
NX2525 Cermet: The "Finish Specialist." Choose this when you want the part to look like a mirror. Best for dry or wet finishing on steels at high RPM.
VP15TF Carbide: The "All-Rounder." Choose this for toughness, interrupted cuts, or when machining stainless steel and exotic alloys where cermet might chip.
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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.