Mitsubishi VCMT080204-MV NX2525 | Cermet Turning Insert for Steel Finishing
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VCMT080204-MV NX2525
Mitsubishi Materials | High-Speed Steel Finishing & Mirror Surface Specialist
Mirror Finishing for Carbon & Alloy Steels
The Mitsubishi VCMT080204-MV NX2525 is a 35° diamond Cermet turning insert engineered for high-speed precision finishing. The NX2525 grade is a non-coated Cermet that provides exceptional chemical stability, effectively preventing Built-Up Edge (BUE). With its 7° positive relief angle and MV (Medium-V) chipbreaker, this long-tail finishing insert is the professional choice for achieving superior surface integrity and mirror-like textures in CNC lathe steel turning and precision boring.
NX2525 Cermet Grade | MV Precision Breaker | High-Speed Finish Solution
Technical Code Identification
35° Diamond
7° Relief Angle
M-Class Tolerance
Countersink Hole
8mm Edge
2.38mm Thick
0.4mm Radius
Medium Breaker
ISO (Metric) vs ANSI (Inch) Comparison
| Feature Spec | ISO (Metric) | ANSI (Inch Equivalent) |
|---|---|---|
| Model Number | VCMT080204-MV | VCMT 1.51.51-MV |
| Inscribed Circle (IC) | 4.76 mm | 0.1875" (3/16") |
| Corner Radius | 0.4 mm | 0.0157" (1/64") |
NX2525 Cermet Advantage
The NX2525 Cermet (Ceramic-Metal) grade is Mitsubishi's premier choice for finishing steel. Unlike tungsten carbide, Cermet does not have a high affinity for the workpiece material. This prevents metal sticking to the edge, resulting in much cleaner cuts, high resistance to oxidative wear, and a longer tool life during high-speed finishing operations.
MV Medium-V Chipbreaker
The MV chipbreaker is designed for light-to-medium finishing duties. It provides stable chip control even at low depths of cut. In internal boring, the MV geometry ensures that chips are curled tightly and evacuated easily, protecting the finished internal bore from scratches and thermal damage.
Recommended Cutting Parameters
| Material Group | Speed ($v_c$) | Feed ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Low Carbon Steel (A36/1018) | 180 - 400 m/min | 0.05 - 0.20 mm/rev | 0.3 - 1.5 mm |
| Alloy Steel (4140/8620) | 150 - 320 m/min | 0.05 - 0.15 mm/rev | 0.3 - 1.2 mm |
COMPATIBLE HOLDERS
Optimized for SVJCR/L 08 external holders or precision Small Diameter Boring Bars.
Shop VCMT Precision Tooling →
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.