Mitsubishi TPMN160308 VP15TF | Miracle Coated Carbide Insert
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TPMN160308 VP15TF
Mitsubishi Materials | PVD Miracle Coated Multi-Material Specialist
The Miracle Grade for Tough Alloys & Stainless
The Mitsubishi TPMN160308 VP15TF is a high-versatility PVD coated carbide insert engineered to conquer difficult-to-cut materials. Utilizing the proprietary Miracle Coating (VP15TF), this insert offers a perfect balance of micro-grain toughness and high-temperature hardness. With a robust 0.8mm corner radius and a 16mm triangular edge, it is the industry benchmark for CNC boring and turning in Stainless Steel, Carbon Steel, and Heat-Resistant Super Alloys.
VP15TF Miracle Coated | TPMN Flat-Top | Stainless & Alloy Specialist
Technical Code Identification
Triangular Shape
11° Positive Relief
M-Class Tolerance
Flat-Top (No Chipbreaker)
16.5mm Edge Length
3.18mm Thick
0.8mm Radius
Miracle Coated
ISO (Metric) vs ANSI (Inch) Comparison
| Feature Spec | ISO (Metric) | ANSI (Inch Equivalent) |
|---|---|---|
| Model Number | TPMN160308 | TPMN 322 |
| Inscribed Circle (IC) | 9.525 mm | 0.375" (3/8") |
| Corner Radius | 0.8 mm | 0.031" (1/32") |
Miracle PVD Coating Advantage
The VP15TF grade is a specialized PVD coated carbide featuring a micro-grain substrate and a high-aluminum content (Al,Ti)N coating. This combination provides excellent oxidation resistance and prevents chip welding. It is specifically designed to handle the work-hardening characteristics of 304 and 316 Stainless Steel, ensuring long tool life even in unstable cutting conditions.
TPMN Flat-Top Geometry
The TPMN geometry is a flat-top (no chipbreaker) design. This provides a very strong cutting edge that excels in heavy-duty boring and turning. By utilizing a sharp, positive 11° relief angle without a molded chipbreaker, the insert reduces cutting forces while maintaining the physical strength required for interrupted cuts and roughing passes.
Recommended Cutting Parameters
| Material Group | Speed ($v_c$) | Feed ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Stainless Steel (304/316) | 80 - 180 m/min | 0.10 - 0.25 mm/rev | 0.5 - 2.5 mm |
| Carbon/Alloy Steel | 120 - 250 m/min | 0.12 - 0.30 mm/rev | 1.0 - 3.0 mm |
COMPATIBLE HOLDERS
Perfectly paired with CTFPR/L 16 or CTGPR/L 16 style external holders and boring bars.
Shop 16mm Boring Bars →