Mitsubishi CNMG190616-MA US735 Heavy-Duty Stainless Steel Insert (10pcs)
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CNMG190616-MA US735
The Roughing Goliath | US735 PVD Toughness | 1.6mm Reinforced Radius
Engineered for High-Volume Metal Removal
US735 Grade (Maximum Impact Strength): The US735 is Mitsubishi’s specialized PVD grade for Stainless Steel (M-Class) and Heat Resistant Alloys (S-Class). In large-scale roughing, thermal shock and mechanical impact are constant. The US735 substrate is exceptionally resilient, preventing the propagation of cracks even during heavy interrupted cuts in work-hardening materials like 316 stainless or Duplex alloys.
MA Chipbreaker (Power & Control): The MA geometry is the industry standard for medium-heavy turning. On this 19mm platform, the MA chipbreaker is tuned to manage large volumes of chips, preventing them from clogging the machine or damaging the workpiece, while maintaining a sharp enough edge to keep cutting temperatures lower.
1.6mm (1/16") Roughing Radius: The 16 radius is built for **Maximum Edge Security**. It allows for very high feed rates and provides incredible strength against the "notching" effect common in stainless steel roughing. It is the preferred choice for roughing large shafts, forgings, and heavy plate components.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG190616-MA | 19.05 mm | 6.35 mm | 1.60 mm |
| Imperial | CNMG644-MA | 3/4" | 1/4" | 0.063" (1/16") |
Heavy-Duty Cutting Parameters
*Warning: This insert requires high-torque CNC lathes. Ensure tool blocks and holders are locked down tightly.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Austenitic Stainless (304/316) | 50 - 130 m/min | 0.30 - 0.70 mm/r | 2.00 - 9.00 mm |
| Duplex / Super Duplex | 25 - 55 m/min | 0.25 - 0.50 mm/r | 2.00 - 6.00 mm |
Heavy-Duty Tool Holders
Maximum rigidity required. Fits DCLNR/L 19 or MCLNR/L 19 series (3232, 4040, or 5050 shanks):
Shop DCLNR 19 HoldersPro-Tip: When to use CNMG190616?
The 1.6mm Radius Advantage: Use this specific model when your primary goal is MRR (Metal Removal Rate) and edge survival. The larger radius is significantly stronger than the 1.2mm version but generates more radial force. Ensure your setup is rock-solid.
US735 vs. CVD Grades: CVD roughing grades can peel under the extreme pressure of 9mm depths of cut in tough alloys. US735's PVD layer acts as a "shock absorber," making it much safer for roughing castings and forgings with uneven surfaces.
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