Mitsubishi SPMN120308 VP15TF | PVD Coated Carbide Insert
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SPMN120308 VP15TF
Mitsubishi Materials | High-Performance Miracle Coated Carbide
The Mitsubishi SPMN120308 VP15TF is a premium PVD coated carbide insert engineered for versatile milling and turning applications. Featuring the legendary Miracle Coating (VP15TF), this insert excels in carbon steel, alloy steel, and stainless steel. Its 12mm square profile and flat-top design provide maximum edge strength for stable, high-reliability machining.
Nomenclature Breakdown
Square
11° Relief
M-Class Tol.
Flat Top
12.7mm Size
3.18mm Thick
0.8mm Rad.
Metric vs. Inch Specifications
| Dimension | ISO (Metric) | ANSI (Inch) Equivalent |
|---|---|---|
| Part Number | SPMN120308 | SPMN 422 |
| Inscribed Circle | 12.7 mm | 0.500" |
| Thickness | 3.18 mm | 0.125" |
| Corner Radius | 0.8 mm | 0.031" |
Material: VP15TF PVD Coating
VP15TF is Mitsubishi’s premium universal grade. It combines a tough micro-grain carbide substrate with a specialized PVD coating. This coating offers exceptional oxidation resistance and adhesion prevention, making it the top choice for milling stainless steel where built-up edge (BUE) often causes tool failure.
Geometry: Flat-Top (N-Type)
The N-type geometry indicates a flat-top face without a molded chipbreaker. This design maximizes the volume of carbide behind the cutting edge, providing superior impact resistance for interrupted cuts and high-feed roughing in manual or CNC machines.
Recommended Cutting Parameters
| Material | Cutting Speed ($v_c$) | Feed per Tooth ($f_z$) |
|---|---|---|
| Carbon Steel | 100 - 220 m/min | 0.10 - 0.25 mm/t |
| Stainless Steel | 80 - 160 m/min | 0.08 - 0.20 mm/t |
| Cast Iron | 100 - 180 m/min | 0.15 - 0.35 mm/t |
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.