Mitsubishi SOMT12T308PEER-JH F7030 | Heavy Duty Milling Insert
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SOMT12T308PEER-JH F7030
Mitsubishi Materials | The Heavy-Duty Steel Milling Powerhouse
The Mitsubishi SOMT12T308PEER-JH F7030 is a specialized indexable milling insert designed for high-load applications. Featuring the robust JH (Heavy Duty) chipbreaker and the impact-resistant F7030 PVD coating, this insert is built to survive where others fail. It is the definitive choice for heavy roughing, interrupted cuts, and machining through scale or uneven surfaces in carbon steel and stainless steel.
Condition: 100% Genuine Mitsubishi | Pack of 10 Inserts
Designation Code Decoded
Square
Relief Angle
M-Class Tol.
Countersink
12mm Size
3.97mm Thick
0.8mm Radius
Heavy Duty
Technical Specifications
| Dimension | Metric (ISO) | Inch (ANSI) Equivalent |
|---|---|---|
| Model Name | SOMT12T308PEER-JH | SOMT 432 PEER-JH |
| Width ($IC$) | 12.7 mm | 0.500" |
| Thickness ($S$) | 3.97 mm | 0.156" |
| Corner Radius ($RE$) | 0.8 mm | 0.031" |
F7030: The Impact Shield
F7030 is a specialized PVD grade designed for general milling of steel and stainless steel. It features an exceptionally strong bond between the substrate and the coating, which prevents peeling during high-impact milling or when machining work-hardened surfaces. It is the "safety first" grade for unstable machining conditions.
JH (Heavy Duty) Geometry
The JH chipbreaker is engineered with a reinforced land and a specific rake angle for heavy roughing. It provides maximum strength to the cutting edge, effectively handling high feed rates and large depths of cut. If your job involves removing high volumes of metal quickly, the JH breaker is the industrial choice for edge security.
Recommended Milling Parameters
Starting Values for Roughing Operations (F7030)
| Material | Cutting Speed ($v_c$) | Feed per Tooth ($f_z$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| Alloy Steel (4140/4340) | 120 - 200 m/min | 0.12 - 0.35 mm/t | 1.0 - 5.0 mm |
| Stainless Steel (304/316) | 100 - 160 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.