Mitsubishi CPMH080208-MV UE6020 Steel Turning Insert (10pcs)
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CPMH080208-MV UE6020
High-Strength Steel Turning | UE6020 Impact Grade | MV Chipbreaker Control
Engineered for Stability and Edge Life
UE6020 Grade (Titanium-Reinforced CVD): The UE6020 is Mitsubishi's veteran grade for P-Class (Steel) machining. It is engineered with a thick multi-layer coating that excels in medium-to-low speed ranges where thermal cracking is less of a risk than mechanical chipping. This makes it the premier choice for "rough-to-finish" operations on small lathes where rigidity might be limited.
MV Chipbreaker (Wide-Range Chip Control): The MV geometry features a specialized 11-degree positive rake. It is specifically designed to handle "voluminous chips" in carbon steel. By aggressively curling the chip, it ensures that even at higher feed rates, the waste material breaks away from the tool quickly, protecting the newly machined surface.
0.8mm (1/32") Robust Radius: The 08 radius is the strength-focused choice. It provides a larger surface area at the tip to dissipate heat and withstand the vibration common in internal boring or long-reach external turning.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CPMH080208-MV | 7.94 mm | 2.38 mm | 0.80 mm |
| Imperial | CPMH2.522-MV | 5/16" | 3/32" | 0.0315" (1/32") |
Recommended Cutting Parameters
*The 0.8mm radius allows for higher chip loads. Ensure the feed rate is sufficient to engage the chipbreaker effectively.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Carbon Steel (1045) | 140 - 260 m/min | 0.12 - 0.30 mm/r | 0.50 - 2.50 mm |
| Alloy Steel (4140) | 110 - 200 m/min | 0.10 - 0.25 mm/r | 0.40 - 1.80 mm |
Pro-Tip: UE6020 vs. NX2525
UE6020 (The Reliable Rougher): Choose this for general steel turning where the material may have a rough surface or where the cut is interrupted.
NX2525 (The High-Speed Cermet): Switch to NX2525 Cermet if you have a stable machine and require a mirror-like surface finish on finishing passes.
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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.