Mitsubishi CPMH090304-MV US735 Stainless Steel Turning Insert (10pcs)
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CPMH090304-MV US735
Impact Strength Specialist | US735 Tough-Barrier CVD | MV Chip Control
Engineered for Unstable & Tough Environments
US735 Grade (The Impact Expert): The US735 is Mitsubishi's toughest CVD grade for M-Class (Stainless Steel). It is specifically formulated to prevent edge chipping when machining through bolt holes, keyways, or raw casting surfaces. The specialized coating structure absorbs mechanical shock and provides superior thermal crack resistance, making it much more reliable than standard grades for heavy-duty stainless tasks.
MV Chipbreaker (Precision Medium Cut): The MV geometry is a versatile 11-degree positive design. It is engineered to slice through gummy materials like 316 stainless without causing work hardening. The MV breaker forces chip breakage across a wide range of feed rates, protecting your workpiece finish and preventing "nesting" in your CNC machine.
0.4mm (1/64") Radius: The 04 radius provides the perfect balance between edge strength and low cutting resistance. It is the ideal choice for finishing operations and small-diameter internal boring where minimizing radial pressure is critical to prevent chatter.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CPMH090304-MV | 9.525 mm | 3.18 mm | 0.40 mm |
| Imperial | CPMH321-MV | 3/8" | 1/8" | 0.0157" (1/64") |
Recommended Cutting Parameters
*US735 thrives in tough conditions. If edge wear is too fast but the tool is not chipping, consider moving to US7020.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Austenitic (304/316) | 80 - 180 m/min | 0.06 - 0.22 mm/r | 0.30 - 2.50 mm |
| Duplex Stainless | 60 - 130 m/min | 0.05 - 0.18 mm/r | 0.25 - 1.80 mm |
Compatible Tool Holders
Standardize your setup with SCLC or SCPC series holders and boring bars:
Shop 09-Series HoldersPro-Tip: US735 vs. US7020
US735 (The Tough Expert): Your first choice for interrupted cuts, heavy scale, or vibration-prone setups. It prioritizes toughness over speed.
US7020 (The Speed Expert): Switch to US7020 for continuous, high-speed turning in stable conditions to achieve longer tool life via higher wear resistance.
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