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 →