Mitsubishi VBMT160408-MV VP15TF Carbide Turning Insert for Stainless Steel
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VBMT160408-MV VP15TF
Mitsubishi Materials | PVD Miracle® Coated Carbide
Engineered for High-Performance Profiling
The VBMT160408-MV VP15TF is a premier 35° rhombic turning insert designed by Mitsubishi Materials. Specifically engineered for Stainless Steel (ISO M) and Carbon/Alloy Steel (ISO P), it features the legendary VP15TF Miracle® PVD coating. This grade offers a superior balance of hardness and toughness, preventing built-up edge (BUE) and providing exceptional stability in semi-finishing and profiling operations.
Technical Specifications
| Metric Code | VBMT160408-MV |
|---|---|
| ANSI/Inch Equivalent | VBMT332-MV |
| Grade (Coating) | VP15TF (PVD Coated Miracle®) |
| Nose Radius | 0.8 mm (1/32") |
| Chipbreaker | MV (Medium Cutting) |
ISO Model Decoding: V B M T 16 04 08
- V: 35° Rhombic shape - Essential for profiling and intricate undercuts.
- B: 5° Relief angle - Reduces friction in positive cutting operations.
- M: Tolerance class - Industrial standard precision for CNC repeatability.
- T: Hole and single-sided chipbreaker design for secure screw-on clamping.
- 16: Edge length - Approx. 16.6mm (Industry Size 3).
- 04: Thickness - 4.76mm (3/16").
- 08: Nose Radius - 0.8mm (1/32") - Offers higher edge strength and higher feed rates than 0.4mm radius.
Cutting Parameters & Recommendations
| Material Group | Cutting Speed (Vc) m/min | Feed Rate (f) mm/rev | Depth of Cut (ap) mm |
|---|---|---|---|
| Stainless Steel (M) | 90 - 180 | 0.12 - 0.30 | 0.5 - 3.0 |
| Carbon/Alloy Steel (P) | 110 - 230 | 0.15 - 0.35 | 0.5 - 3.5 |
| Cast Iron (K) | 100 - 200 | 0.15 - 0.35 | 0.5 - 3.5 |
Need a Compatible Holder?
The VBMT 1604 series fits perfectly with MVJNR/L or SVJBR/L external tool holders and internal boring bars.
Shop Tool Holders NowExpert Tip: VP15TF vs. US735
Choose VP15TF for semi-finishing where edge sharpness and precision profiling are key. If you are doing heavy, continuous roughing of 300-series stainless steel, consider the US735 (CVD) grade for higher thermal resistance. The MV chipbreaker is an all-purpose medium geometry, providing excellent chip control across varied feed rates.