Mitsubishi CNMG120404-MS US735 Stainless Steel Finishing Insert (10pcs)
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CNMG120404-MS US735
Stainless Steel Specialist | US735 Tough PVD | MS Precision Finishing
Mastering Difficult-to-Cut Materials
US735 Grade (Toughness Champion): The US735 is a specialized PVD-coated grade specifically developed for M-Class (Stainless Steel). It is designed to withstand the thermal shock and mechanical stress of interrupted cutting. If you are struggling with edge chipping or premature failure in gummy materials, US735 provides the micro-toughness needed to keep the machine running.
MS Chipbreaker (Finishing Specialist): The MS geometry is a high-sharpness chipbreaker tailored for light cutting depths. It features a high rake angle that reduces cutting resistance and heat generation. This is critical for preventing "work hardening" on the surface of the workpiece, ensuring a mirror-like finish and dimensional accuracy.
0.4mm (1/64") Radius: The small corner radius is essential for finishing applications. It minimizes radial pressure, allowing for high-precision turning on slender parts or thin-walled components without causing vibration or deflection.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120404-MS | 12.7 mm | 4.76 mm | 0.40 mm |
| Imperial | CNMG431-MS | 1/2" | 3/16" | 0.0157" (1/64") |
Recommended Cutting Parameters
*Optimized for finishing. Use plenty of coolant to extend the life of the PVD coating in stainless steel.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Austenitic Stainless (304/316) | 80 - 150 m/min | 0.05 - 0.15 mm/r | 0.20 - 1.50 mm |
| Duplex Stainless Steel | 50 - 110 m/min | 0.08 - 0.18 mm/r | 0.30 - 1.20 mm |
Recommended Tool Holders
For vibration-free finishing, use DCLNR/L 12 series holders:
Shop DCLNR 12 HoldersPro-Tip: US735 vs. VP15TF
US735 (The Tough Specialist): This is your best friend for heavy interruptions and low-rigidity machines. It is tougher and resists impact better than VP15TF.
MS vs. MA Chipbreaker: Use MS for final finishing where depth of cut is very shallow. If you are doing general medium cutting, stick with the MA geometry.
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