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.
Browse Matching 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.