Mitsubishi DCMT070204-FV NX2525 Cermet Turning Insert for Mirror Finish
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DCMT070204-FV NX2525
Mirror-Finish Cermet | FV Precision Chipbreaker | High-Gloss Specialist
The Ultimate Finishing Solution for Steel
NX2525 Cermet Grade: The NX2525 is a premium Cermet (Titanium Carbonitride based) grade. Unlike tungsten carbide, Cermet does not react chemically with steel workpieces at high temperatures. This prevents material from welding to the edge, ensuring the insert maintains a sharp profile for much longer and produces a high-gloss, superior surface finish ($Ra$) that carbide cannot match.
FV Chipbreaker (Fine Finishing): The FV (Finishing-V) chipbreaker is engineered specifically for light depths of cut. Its unique geometry breaks chips into small, manageable "6" shapes even at high speeds, preventing "bird-nesting" and protecting the workpiece from scratches during the final pass.
0.4mm Precision Radius: The "04" nose radius provides the perfect balance between edge sharpness and strength, allowing for tight tolerances on small components and high-accuracy profiling.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | DCMT070204-FV | 6.35 mm | 2.38 mm | 0.40 mm |
| Imperial | DCMT21.51-FV | 1/4" | 3/32" | 0.0157" (1/64") |
Recommended Cutting Parameters
*NX2525 requires higher speeds for optimal finish. Avoid low-speed machining to prevent chipping.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Mild Steel (1018/1045) | 150 - 350 m/min | 0.05 - 0.15 mm/r | 0.10 - 1.00 mm |
| Alloy Steel (4140/SCM440) | 120 - 280 m/min | 0.05 - 0.12 mm/r | 0.10 - 0.80 mm |
Compatible Tool Holders
Optimized for use with SDJCR/L or SDUCR/L 07-series holders:
Shop SDJCR 07 HoldersPro-Tip: Cermet vs. Carbide
NX2525 (Cermet): Best for final passes. It provides much better tool life at high speeds in finishing applications and leaves a "brand-new" shine on the metal.
VP15TF (Carbide): Switch to VP15TF if you are doing interrupted cuts or roughing. Cermet is more brittle and may chip under heavy impact or vibration.
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