Mitsubishi SOET12T308PEER-JL VP15TF Milling Insert | Sharp JL Breaker
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SOET12T308PEER-JL VP15TF
Mitsubishi Materials | Precision Low-Resistance Milling
The Mitsubishi SOET12T308PEER-JL VP15TF is a premium indexable milling insert engineered for high-precision shoulder milling and face milling. Featuring the specialized JL (Low Resistance) chipbreaker, it is optimized for machining stainless steel and heat-resistant alloys where tool pressure and vibration must be minimized. The VP15TF Miracle PVD coating ensures a long-lasting sharp edge and superior resistance to built-up edge.
Genuine Mitsubishi Materials | Box of 10 Inserts
ISO Designation Decoded
Square Shape
Octagonal/Specific Relief
E-Class Tol.
With Hole/Chipbreaker
12mm Size
3.97mm Thick
0.8mm Radius
Low Resistance
Specification Comparison
| Dimension | Metric (ISO) | Inch (ANSI) Equivalent |
|---|---|---|
| Model Name | SOET12T308PEER-JL | SOET 432 PEER-JL |
| Size ($IC$) | 12.7 mm | 0.500" |
| Thickness ($S$) | 3.97 mm | 0.156" |
| Corner Radius ($RE$) | 0.8 mm | 0.031" |
VP15TF Miracle PVD Grade
The VP15TF grade is Mitsubishi's high-tech PVD coated carbide. Known for its extreme versatility, it combines a micro-grain carbide substrate with a nano-layered Miracle coating. This provides exceptional thermal shock resistance and edge toughness, making it the primary choice for milling stainless steel and difficult alloys under wet or dry conditions.
JL (Low Resistance) Breaker
The JL Chipbreaker is specifically designed for light-to-medium milling where reducing cutting forces is critical. The sharp rake angle prevents the material from "smearing" and minimizes work hardening on the workpiece surface. Ideal for thin-walled parts or long-overhang setups where vibration (chatter) is a concern.
Milling Parameter Recommendations
| Material Group | Cutting Speed ($v_c$) | Feed per Tooth ($f_z$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| Austenitic Stainless (304/316) | 100 - 180 m/min | 0.08 - 0.20 mm/t | 0.5 - 4.0 mm |
| Titanium/Inconel | 30 - 60 m/min | 0.08 - 0.15 mm/t | 0.5 - 3.0 mm |