Mitsubishi CNMG120412-MS VP15TF Carbide Insert for Stainless Steel (10pcs)
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CNMG120412-MS VP15TF
Heavy Finishing Master | PVD VP15TF Miracle Grade | 1.2mm Reinforced Edge
The Power of Miracle PVD Coating
VP15TF Miracle Grade (Advanced PVD): The VP15TF grade features an ultra-fine micro-grain substrate coated with Mitsubishi's proprietary Miracle (Al-Ti-N) PVD layer. This coating provides a unique combination of extreme surface hardness and excellent oxidation resistance. Because it is PVD-applied, it maintains a sharper cutting edge than CVD grades, which is essential for "shearing" gummy materials like 304/316 stainless steel instead of "tearing" them.
MS Chipbreaker (Stainless Logic): The MS geometry is specifically engineered for difficult-to-cut materials. It features a high rake angle and a specialized chip pocket that prevents the long, stringy chips common in austenitic stainless. It minimizes cutting resistance, which reduces heat and prevents work-hardening of the workpiece surface.
1.2mm (3/64") Radius (Edge Security): The 1.2mm corner radius provides superior edge strength. It allows for higher feed rates and provides a much stronger "tip" that resists chipping during interrupted cuts or when machining through surface scale, while still delivering an excellent industrial finish.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120412-MS | 12.7 mm | 4.76 mm | 1.20 mm |
| Imperial | CNMG433-MS | 1/2" | 3/16" | 0.0472" (3/64") |
Recommended Cutting Parameters
*The reinforced 1.2mm radius allows for aggressive feed rates. Always use flood coolant in stainless steel applications.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Stainless Steel (304/316) | 80 - 170 m/min | 0.20 - 0.45 mm/r | 1.00 - 4.00 mm |
| Titanium / Inconel | 25 - 55 m/min | 0.15 - 0.35 mm/r | 0.50 - 3.00 mm |
Compatible Tool Holders
Maximum rigidity is recommended for 1.2mm radius inserts. Fits DCLNR/L 12 series holders:
Shop DCLNR 12 HoldersPro-Tip: Why use 12-radius MS?
Radius Strength: In heavy roughing of stainless, heat is the enemy. The 1.2mm radius dissipates heat over a wider edge than the 0.8mm, prolonging tool life.
VP15TF vs. US735: Use VP15TF for general production and higher speeds. Switch to US735 only if you are experiencing extreme impact or heavy interrupted cuts where toughness is the only priority.
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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.