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.
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.