Mitsubishi CNMG120412-MA VP15TF Miracle PVD Roughing Insert (10pcs)
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CNMG120412-MA VP15TF
Heavy Roughing Specialist | Miracle PVD Coating | 1.2mm Reinforced Edge
Maximum Edge Security for Tough Materials
VP15TF Miracle Grade (The PVD Powerhouse): The VP15TF utilizes Mitsubishi’s proprietary PVD technology. Unlike CVD coatings which can be brittle, the Miracle PVD coating adheres to a micro-grain substrate that is exceptionally tough. It is designed to resist Built-up Edge (BUE) and notching, which are the primary failure modes when roughing Stainless Steel and High-Temp Alloys.
MA Chipbreaker (Roughing Strength): The MA geometry on this 12-radius platform provides a wider chip-breaking range. It is engineered to handle higher feed rates and deeper cuts (Ap) while ensuring that chips are broken into manageable "C" shapes, protecting the workpiece and the machine from "bird-nesting."
1.2mm (3/64") Reinforced Radius: The 1.2mm corner is the strongest in the CNMG1204 series. It distributes cutting forces over a larger area, significantly reducing the risk of catastrophic corner fracture during heavy roughing of scaled forgings or interrupted cuts.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120412-MA | 12.7 mm | 4.76 mm | 1.20 mm |
| Imperial | CNMG433-MA | 1/2" | 3/16" | 0.0472" (3/64") |
Heavy Roughing Parameters
*The 1.2mm radius allows for much higher feed rates. Always use high-pressure coolant to manage heat in the cutting zone.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Stainless Steel (316L/Duplex) | 80 - 160 m/min | 0.25 - 0.50 mm/r | 1.50 - 5.00 mm |
| Heat Resistant Alloys (Inconel) | 25 - 60 m/min | 0.15 - 0.35 mm/r | 1.00 - 3.50 mm |
Compatible Tool Holders
Maximum rigidity is vital for 1.2mm radius roughing. Fits DCLNR/L 12 series holders:
Shop DCLNR 12 HoldersPro-Tip: Why use 12-radius VP15TF?
Corner Security: In large-scale roughing of stainless steel, the heat is intense. The 1.2mm radius dissipates heat more efficiently than a 0.8mm radius.
VP15TF vs US735: While US735 is a dedicated stainless grade, VP15TF (Miracle) offers better performance across a wider range of alloys and general steel, making it the better choice for diverse job shops.
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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.