Mitsubishi DCMT11T304-MV AP25N Cermet Turning Insert for Mirror Finish
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DCMT11T304-MV AP25N
Mirror Finish Specialist | AP25N Cermet Technology | MV Finishing Geometry
Engineered for Aesthetic and Dimensional Perfection
AP25N Grade (Advanced Cermet): The AP25N is a titanium-based Cermet grade. Cermets offer higher chemical stability than standard tungsten carbide. This grade is specifically designed to prevent metal from welding to the tip (BUE), ensuring that your finished parts have a bright, polished appearance and consistent diameter over long production runs.
MV Chipbreaker (Medium-V Finishing): The MV geometry is Mitsubishi's versatile finishing chipbreaker. It features a sharp rake angle that slices through material with minimal heat generation. In finishing applications, it provides excellent chip control at light depths, preventing "stringer" chips from damaging the part surface.
0.4mm Radius (The Finishing Standard): The "04" (1/64") radius is the industry standard for high-quality surface finishes ($Ra$). It provides enough strength for a stable cut while keeping radial pressure low enough to prevent chatter on precision components.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | DCMT11T304-MV | 9.525 mm | 3.97 mm | 0.40 mm |
| Imperial | DCMT32.51-MV | 3/8" | 5/32" | 0.0157" (1/64") |
Recommended Machining Parameters
*Cermet performs best at high speeds. Avoid heavy interrupted cuts to maintain edge integrity.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Carbon/Alloy Steel | 200 - 350 m/min | 0.05 - 0.15 mm/r | 0.15 - 1.00 mm |
| Stainless Steel (Finished) | 120 - 220 m/min | 0.05 - 0.12 mm/r | 0.15 - 0.80 mm |
Compatible Tool Holders
Maximum finishing precision with 11-series SDJCR/L or SDUCR/L holders:
Shop SDJCR 11 HoldersPro-Tip: AP25N vs. NX2525
AP25N (Cermet): The ultimate choice for surface finish. Use this for the final pass in mass production where aesthetic look and precision are the key requirements.
NX2525 (Cermet): While NX2525 is a legendary finishing grade, AP25N offers slightly better wear resistance in high-speed applications. If you need the longest possible life for a finishing edge, AP25N is the modern upgrade.
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