Mitsubishi TPMN220412 VP15TF | Heavy-Duty Miracle Coated Insert
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TPMN220412 VP15TF
Mitsubishi Materials | Heavy-Duty PVD Miracle Coated Specialist
Unmatched Toughness for Large-Scale Boring
The Mitsubishi TPMN220412 VP15TF is a heavy-duty PVD coated carbide insert designed for the most demanding machining environments. Utilizing the proprietary Miracle Coating (VP15TF), this insert excels in materials that are prone to work-hardening, such as 300-series Stainless Steel and Inconel. With a massive 22mm edge and a 1.2mm corner radius, this long-tail roughing insert provides incredible edge security during CNC boring of large-diameter components.
VP15TF Miracle PVD | TPMN Flat-Top Strength | 1.2mm Roughing Radius
Technical Code Identification
Triangular Shape
11° Positive Relief
M-Class Tolerance
Flat-Top (No Chipbreaker)
22mm Edge Length
4.76mm Thick
1.2mm Radius
Miracle Coated
ISO (Metric) vs ANSI (Inch) Comparison
| Feature Spec | ISO (Metric) | ANSI (Inch Equivalent) |
|---|---|---|
| Model Number | TPMN220412 | TPMN 433 |
| Inscribed Circle (IC) | 12.7 mm | 0.500" (1/2") |
| Thickness | 4.76 mm | 0.187" (3/16") |
Miracle Coated (VP15TF) Carbide
VP15TF is a high-performance PVD coated grade that uses a Nano-structure TiAlN coating. This coating is incredibly effective at resisting "Built-Up Edge" (BUE) and thermal cracking. It is the go-to grade for Stainless Steel, and it offers the toughness required for interrupted cuts in heavy alloy steel roughing.
TPMN Heavy Roughing Geometry
The TPMN geometry is a flat-top design with a positive 11-degree relief. By omitting a chipbreaker, Mitsubishi provides the maximum possible carbide volume behind the edge. This is critical when using a 1.2mm radius for heavy depth of cut (DOC) operations, ensuring the insert won't fracture under high pressure.
Recommended Cutting Parameters
| Material Group | Speed ($v_c$) | Feed ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Stainless Steel (304/316) | 80 - 160 m/min | 0.15 - 0.40 mm/rev | 1.0 - 5.0 mm |
| Alloy Steel / Hardened | 100 - 220 m/min | 0.15 - 0.45 mm/rev | 1.0 - 6.0 mm |