Mitsubishi CPMH080204-MV US7020 Stainless Steel Turning Insert (10pcs)
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CPMH080204-MV US7020
Stainless Steel Specialist | US7020 Anti-Galling Grade | MV Edge Precision
Mastering Gummy & Tough Materials
US7020 Grade (Stainless Steel Expert): The US7020 is a premium CVD-coated grade designed specifically for M-Class (Stainless Steel). Stainless steel turning often results in "Built-up Edge" (BUE) where the material welds to the tool. US7020 utilizes a smooth, heat-resistant coating that prevents adhesion and resists crater wear, ensuring a stable edge even during long cutting cycles in 304, 316, or Duplex stainless.
MV Chipbreaker (Versatile Medium Control): The MV geometry is a positive-rake design optimized for chip control in soft, ductile materials. It features a sharp cutting edge that reduces cutting force, which is critical for preventing work-hardening of the stainless surface and reducing vibration in thin-walled parts.
0.4mm (1/64") Precision Radius: The 04 radius is the global standard for detail. It provides excellent surface finish quality and the lowest possible radial pressure, making it the perfect choice for small-diameter turning and internal boring.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CPMH080204-MV | 7.94 mm | 2.38 mm | 0.40 mm |
| Imperial | CPMH2.521-MV | 5/16" | 3/32" | 0.0157" (1/64") |
Recommended Cutting Parameters
*Stainless steel requires constant chip load. Avoid dwelling or too low a feed to prevent surface hardening.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Austenitic (304/316) | 120 - 200 m/min | 0.05 - 0.20 mm/r | 0.20 - 1.50 mm |
| Martensitic/Ferritic | 140 - 230 m/min | 0.06 - 0.22 mm/r | 0.25 - 1.80 mm |
Compatible Tool Holders
Maximum performance is achieved with SCLC or SCPC series precision holders:
Shop SCLC HoldersPro-Tip: US7020 vs. US735
US7020 (The Stable Choice): Ideal for continuous turning and medium speeds. It offers higher wear resistance on the flank.
US735 (The Tough Choice): Switch to US735 if you encounter heavy interrupted cuts or if your machine is prone to vibration, as it offers the highest shock resistance in stainless grades.
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