Mitsubishi SNMG120412-MS VP15TF Turning Insert | Stainless Specialist
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SNMG120412-MS VP15TF
Mitsubishi Materials | Precision Stainless Steel & Superalloy Turning
The Mitsubishi SNMG120412-MS VP15TF is a specialized indexable carbide insert engineered for high-performance stainless steel machining. Featuring the reinforced 1.2mm radius for edge strength and the VP15TF Miracle PVD coating, this insert is the industry standard for reducing work hardening and preventing built-up edge (BUE). The MS chipbreaker is specifically designed for medium-to-finishing applications where vibration control and low cutting resistance are vital.
Condition: 100% Genuine Mitsubishi | Box of 10 Inserts
ISO Designation Decoded
Square 90°
0° Relief
M-Class Tol.
Double Sided
12.7mm Size
4.76mm Thick
1.2mm Radius
Stainless Finish
Technical Specifications
| Dimension | Metric (ISO) | Inch (ANSI) Equivalent |
|---|---|---|
| Model Name | SNMG120412-MS | SNMG 433-MS |
| Inscribed Circle ($IC$) | 12.7 mm | 0.500" (1/2") |
| Thickness ($S$) | 4.76 mm | 0.187" (3/16") |
| Corner Radius ($RE$) | 1.2 mm | 0.047" (3/64") |
VP15TF Miracle PVD Grade
The VP15TF grade uses Mitsubishi's proprietary nano-layered Miracle PVD coating. This coating provides a highly slippery surface to prevent chip welding and excessive heat buildup. It is specifically formulated to handle the high thermal and mechanical stress found in austenitic stainless steels and nickel-based superalloys, ensuring consistent tool life.
MS Low-Resistance Chipbreaker
The MS chipbreaker is a "Low-Resistance" geometry designed for precision turning. By utilizing a sharp rake angle, it effectively reduces cutting forces and minimizes chatter/vibration. The 1.2mm radius version provides a much stronger edge than standard 0.4/0.8 versions, making it ideal for medium-heavy finishing cycles on tough materials.
Recommended Cutting Parameters
Starting Values for Stainless Steel & HRSA (VP15TF)
| Workpiece Material | Cutting Speed ($v_c$) | Feed Rate ($f$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| 304/316 Stainless Steel | 80 - 180 m/min | 0.15 - 0.35 mm/rev | 0.5 - 2.5 mm |
| Heat Resistant Alloys (Inconel) | 30 - 70 m/min | 0.12 - 0.30 mm/rev | 0.5 - 2.0 mm |
PRECISION HOLDER COMPATIBILITY
Compatible with industry-standard PSSNR/L, DSBNR/L, or MSKNR/L turning tool holders.
View Compatible Holders →
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.