Mitsubishi SOMT12T308PEER-JH VP15TF | Heavy-Duty Milling Insert
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SOMT12T308PEER-JH VP15TF
Mitsubishi Materials | The Universal Heavy-Duty Roughing Solution
The Mitsubishi SOMT12T308PEER-JH VP15TF is a high-strength indexable milling insert engineered for reliability in the most demanding conditions. Combining the legendary VP15TF Miracle PVD coating with the reinforced JH (Heavy Duty) chipbreaker, this insert is designed to tackle heavy roughing, interrupted cuts, and materials with difficult surface scales. Whether you are face milling carbon steel or machining stainless steel alloys, the SOMT series delivers exceptional edge security and cost-efficiency.
Industrial Grade | 100% Genuine Mitsubishi | Pack of 10
ISO Designation Decoded
Square
Relief Angle
M-Class Precision
Hole/Breaker
12mm Edge
3.97mm Thick
0.8mm Radius
Heavy Roughing
Specification Comparison
| Dimension | Metric (ISO) | Inch Equivalent (ANSI) |
|---|---|---|
| ISO Model | SOMT12T308PEER-JH | SOMT 432 PEER-JH |
| Inscribed Circle ($IC$) | 12.7 mm | 0.500" |
| Thickness ($S$) | 3.97 mm | 0.156" |
| Corner Radius ($RE$) | 0.8 mm | 0.031" |
VP15TF: The Universal Miracle
The VP15TF Miracle PVD grade is Mitsubishi's benchmark for versatility. By utilizing a specialized micro-grain carbide substrate and a high-adhesion PVD coating, it provides superior resistance to built-up edge (BUE) and flank wear. It is the ideal long-tail solution for job shops milling a variety of materials from carbon steel to stainless steel.
JH Heavy-Duty Chipbreaker
The JH geometry is the "Heavy" specialist. Featuring a reinforced cutting edge and a optimized rake angle, it is built to survive interrupted milling and high-impact entries. If your application involves heavy roughing or deep depths of cut, the JH breaker ensures the insert remains stable, preventing premature chipping of the carbide edge.
Recommended Cutting Parameters
Optimized for Heavy Operations (VP15TF)
| Workpiece Material | Cutting Speed ($v_c$) | Feed per Tooth ($f_z$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| Carbon/Alloy Steel | 150 - 250 m/min | 0.12 - 0.35 mm/t | 1.0 - 5.0 mm |
| Stainless Steel (304/316) | 100 - 180 m/min | 0.10 - 0.25 mm/t | 1.0 - 4.0 mm |
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.