Mitsubishi DNMG150404-MA VP15TF Finishing Insert | Stainless & Alloy
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DNMG150404-MA VP15TF
Precision Finish Mastery | Mirage PVD Technology | MA Low-Resistance Geometry
The Ultimate Precision Solution
VP15TF Grade (Mirage PVD Coating): The VP15TF is Mitsubishi’s most successful PVD grade. The "Mirage" coating utilizes a nano-layered structure that balances hardness with extreme toughness. It is specifically designed to stop Built-Up Edge (BUE) in gummy materials like 304/316 Stainless Steel, Inconel, and Titanium, ensuring the edge stays sharp longer.
MA Chipbreaker (Precision Medium-Finish): The MA chipbreaker features a positive rake angle and a specialized chip pocket. For a finishing radius like the 0.4mm, this geometry is critical to reduce radial cutting forces, preventing vibration and chatter on slender workpieces or long-reach applications.
0.4mm Radius (Mirror Finishing): The "04" (1/64") radius is the choice for high-accuracy finishing. It allows for lower cutting depths while producing a superior Ra surface finish. It is the go-to radius when you need to hold tolerances within microns.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | DNMG150404-MA | 12.70 mm | 4.76 mm | 0.40 mm |
| Imperial | DNMG431-MA | 1/2" | 3/16" | 0.0157" (1/64") |
Recommended Machining Parameters
*The 0.4mm radius requires careful feed rate control to prevent tool tip burnout. Use high-pressure coolant.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Stainless Steel (304/316) | 80 - 180 m/min | 0.05 - 0.20 mm/r | 0.30 - 2.00 mm |
| High-Temp Alloys (Inconel) | 30 - 60 m/min | 0.05 - 0.15 mm/r | 0.20 - 1.50 mm |
Compatible Tool Holders
Maximum finishing precision with 15-series DDJNR/L or DDUNR/L holders:
Shop DDJNR 15 HoldersPro-Tip: VP15TF vs. US735
VP15TF (The Precision Choice): This PVD grade is much more wear-resistant at the higher speeds needed for finishing. It is the best choice for CNC lathes running continuous finish passes.
US735 (The Toughness Choice): Only switch to US735 if you are performing heavy interrupted cuts in stainless or have extremely unstable machine setups. For 90% of precision work, VP15TF is superior.
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