Mitsubishi CNMG120404-MS VP15TF Precision Finishing Insert (10pcs)
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CNMG120404-MS VP15TF
The Miracle Finisher | PVD VP15TF Grade | MS High-Sharpness Geometry
Precision Engineering for Difficult Materials
VP15TF Miracle Grade (The PVD Standard): The VP15TF grade is Mitsubishi’s proprietary PVD-coated carbide, featuring a specialized Al-Ti-N Miracle coating. Unlike thick CVD coatings that round off the cutting edge, this PVD layer allows the insert to remain razor-sharp. This is essential for preventing the "tearing" of material in stainless steel and heat-resistant alloys, ensuring the highest surface integrity.
MS Chipbreaker (Finishing Precision): The MS geometry is specifically designed for low depths of cut. It features a sharp rake angle that shears material with minimal pressure. This prevents work hardening—a common failure in 304/316 stainless—and ensures that chips are broken cleanly even at very fine feed rates.
0.4mm (1/64") Radius: The small corner radius minimizes radial cutting forces. This makes it the ideal tool for machining small diameters or thin-walled components where vibration and part deflection are major concerns.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120404-MS | 12.7 mm | 4.76 mm | 0.40 mm |
| Imperial | CNMG431-MS | 1/2" | 3/16" | 0.0157" (1/64") |
Precision Finishing Parameters
*The VP15TF grade is designed for medium-to-low speeds to prevent thermal deformation of the sharp edge.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Stainless Steel (304/316) | 80 - 180 m/min | 0.05 - 0.18 mm/r | 0.20 - 1.50 mm |
| High-Temp Alloys (Inconel) | 30 - 65 m/min | 0.05 - 0.15 mm/r | 0.15 - 1.00 mm |
Compatible Tool Holders
Ensure high precision with DCLNR/L 12 or MCLNR/L 12 series holders:
Shop DCLNR 12 HoldersPro-Tip: Choosing the Right Grade
VP15TF vs. US735: Use VP15TF for precision finishing where setup is stable and surface finish is the priority. Switch to US735 if you encounter heavy interruptions or unstable vibrations.
MS vs. MA Geometry: Choose MS when your depth of cut is less than 1.5mm. For larger removal rates, the MA geometry provides a stronger edge.
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