Mitsubishi SOMT12T308PEER-JM VP15TF Milling Insert | JM Breaker
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SOMT12T308PEER-JM VP15TF
Mitsubishi Materials | The Standard for General Purpose Milling
The Mitsubishi SOMT12T308PEER-JM VP15TF is a highly versatile indexable milling insert designed for medium-duty face milling and shoulder milling. Featuring the JM (General Purpose) chipbreaker and the legendary VP15TF Miracle PVD coating, this insert offers an exceptional balance between edge sharpness and toughness. It is the go-to solution for CNC operators machining carbon steel, alloy steel, and stainless steel under a wide range of cutting conditions.
Condition: 100% Original Mitsubishi | Standard Pack of 10
ISO Designation Decoded
Square
Relief Angle
M-Class Precision
Hole/Breaker
12mm Size
3.97mm Thick
0.8mm Radius
General Use
Technical Specifications
| Feature | Metric (ISO) | Inch (ANSI) Equivalent |
|---|---|---|
| Part Number | SOMT12T308PEER-JM | SOMT 432 PEER-JM |
| Cutting Edge Length | 12.7 mm | 0.500" |
| Thickness ($S$) | 3.97 mm | 0.156" |
| Nose Radius ($RE$) | 0.8 mm | 0.031" |
VP15TF Miracle PVD Grade
The VP15TF grade is Mitsubishi's premium universal PVD coating. It utilizes a nano-layered coating structure that provides extreme resistance to oxidation and flank wear. Its unique adhesion technology prevents the coating from peeling during high-temperature cutting, making it the most reliable choice for machining stainless steel and alloy steels.
JM (General Purpose) Breaker
The JM chipbreaker is designed for medium milling. It features a medium rake angle that reduces cutting resistance while maintaining a stable edge land. This geometry provides excellent chip control across various depths of cut, ensuring that chips are cleared efficiently to prevent re-cutting and surface marring.
Cutting Parameters Recommendations
| Material Group | Cutting Speed ($v_c$) | Feed per Tooth ($f_z$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| Mild/Carbon Steel | 150 - 250 m/min | 0.10 - 0.30 mm/t | 0.5 - 5.0 mm |
| Stainless Steel (300 series) | 100 - 180 m/min | 0.08 - 0.20 mm/t | 0.5 - 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.