Mitsubishi CNMG120404 NX2525 Cermet Finishing Insert for Steel (10pcs)
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CNMG120404 NX2525
High-Speed Finishing Master | NX2525 Cermet Grade | Mirror Finish
The Cermet Advantage: NX2525 Grade
NX2525 Cermet Grade: Mitsubishi’s NX2525 is a high-performance Cermet grade (Titanium Carbonitride based). Because cermet has a low affinity for workpiece materials like steel and stainless steel, it eliminates the "sticking" effect. This ensures that the insert maintains a sharp cutting edge for much longer than coated carbide, delivering superior surface brightness (Ra values) and high-speed stability.
Standard CNMG Chipbreaker: This insert features a precision-engineered chipbreaker designed for finishing and semi-finishing operations. It effectively controls chip flow at shallow depths of cut, preventing long, stringy chips from tangling around the workpiece or tool holder.
0.4mm (1/64") Radius: The 04 radius is the specialist for Precision Finishing. It generates lower radial cutting forces, which is essential for machining thin parts or maintaining tight tolerances without vibration or chatter.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120404 | 12.7 mm | 4.76 mm | 0.40 mm |
| Imperial | CNMG431 | 1/2" | 3/16" | 0.0157" (1/64") |
Recommended Cutting Parameters
*Cermet thrives at high surface speeds. For best results, use dry cutting or flood coolant; avoid intermittent cooling to prevent thermal shock.
| Material Group | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Carbon Steel / Alloy Steel | 150 - 400 m/min | 0.05 - 0.20 mm/r | 0.20 - 1.50 mm |
| Stainless Steel (Finishing) | 120 - 250 m/min | 0.05 - 0.15 mm/r | 0.20 - 1.00 mm |
Compatible Tool Holders
Engineered for DCLNR/L 12 and MCLNR/L 12 series Turning Tools:
Shop DCLNR 12 HoldersPro-Tip: Cermet vs. Coated Carbide
NX2525 (Cermet): The Finishing Specialist. Use this when your priority is the highest surface finish quality and dimensional precision. It excels in stable, high-speed continuous cuts.
VP15TF (Coated Carbide): The Toughness King. Switch to coated carbide if you are performing heavy roughing or dealing with interrupted cuts, as Cermet is more brittle than carbide.
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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.