Mitsubishi SNMG120408-MS VP15TF Turning Insert | Stainless Steel Finishing
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SNMG120408-MS VP15TF
Mitsubishi Materials | The Stainless Steel Finishing Specialist
The Mitsubishi SNMG120408-MS VP15TF is a high-precision indexable carbide insert engineered for stainless steel turning. This model features the specialized MS chipbreaker, specifically designed to combat work hardening and provide excellent chip control during finishing and medium cutting. Powered by the VP15TF Miracle PVD coating, it delivers high adhesion resistance and long tool life in difficult-to-cut materials.
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
0.8mm Radius
Stainless Finish
Technical Specifications
| Dimension | Metric (ISO) | Inch (ANSI) Equivalent |
|---|---|---|
| Model Name | SNMG120408-MS | SNMG 432-MS |
| Inscribed Circle ($IC$) | 12.7 mm | 0.500" (1/2") |
| Thickness ($S$) | 4.76 mm | 0.187" (3/16") |
| Corner Radius ($RE$) | 0.8 mm | 0.031" (1/32") |
VP15TF Miracle PVD Grade
The VP15TF grade is Mitsubishi’s proprietary Miracle PVD coating. It features a nano-layered structure that offers extreme heat resistance and lubricity. This is critical for CNC turning stainless steel, as it prevents built-up edge (BUE) and maintains edge sharpness, allowing for superior surface finish and dimensional accuracy.
MS "Low Resistance" Chipbreaker
The MS chipbreaker is specifically designed for medium-to-finishing of stainless steel and heat-resistant alloys. It features a sharp cutting edge that minimizes cutting resistance, effectively reducing vibration (chatter) in long workpieces or low-rigidity setups. It excels in breaking "stringy" stainless chips.
Recommended Cutting Parameters
Starting Data for Stainless Steel (VP15TF)
| Material Group | Cutting Speed ($v_c$) | Feed Rate ($f$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| Austenitic Stainless (304/316) | 80 - 180 m/min | 0.10 - 0.30 mm/rev | 0.5 - 2.5 mm |
| Heat Resistant Alloys | 30 - 80 m/min | 0.10 - 0.25 mm/rev | 0.5 - 2.0 mm |
COMPATIBLE TOOLING
Pairs with high-rigidity PSSNR/L, DSBNR/L, or MSKNR/L 90° turning tool holders.
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